Дмитрий Сухоцкий提出的问题

Дмитрий Сухоцкий

Asked: 2020-01-10 21:59:39 +0000 UTC

获取您来自的页面的 url

0

有 2 个页面 A.html 和 B.html 页面 A 有一个链接<a href="B.html>B</a>

我正在尝试记录 url console.log(document.referrer)，但我得到一个空字符串。console.log(document)返回#document。

当我做同样的事情但使用网络服务器时，它会显示正确的路径。console.log(document) -> [object HTMLDocument] 有什么问题？如何在没有 Web 服务器的情况下使用

Дмитрий Сухоцкий

Asked: 2020-10-07 23:43:38 +0000 UTC

动态添加具有唯一 ID 的输入

0

我面临的任务是单击添加输入，并使用按钮删除此输入。输入的最大数量是 4。每个输入必须有自己的唯一 id (pick1,pick2,pick3 或 pick4)。删除和添加新的后我很困惑。我尝试将值添加到数组并从中拉出计数器，但它不起作用。提示算法。

let count = 0;
let mass = [];
        $('.addPick').click(function(){
            
            var input = document.createElement("input");
            var btn = document.createElement("span");
            var div = document.createElement("div");

            if (count < 4) {
                count++;

                input.setAttribute("type", "text");
                input.setAttribute("id", "pick" + count);
           

                btn.innerHTML = "&times;";
                btn.setAttribute("class", "delete-pick");
                div.append(input,btn);

                $('.new-input').append(div);


                $('.delete-pick').click(function(){
                count--;
  
                  $(this).parent().remove();
                })
            } else {
                alert("Можно выбрать максимум 4 точки");
            }
            

        })

<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<input type="button" value="+" class="addPick">
<div class="new-input"></div>

Дмитрий Сухоцкий

Asked: 2020-05-15 16:27:17 +0000 UTC

从服务器获取 json 时出错

0

我尝试从服务器获取 json 以进行进一步操作并得到错误。

Access to XMLHttpRequest at 'http://www.mrsoft.by/data.json' from origin 'http://localhost:1234' has been blocked by CORS policy: No 'Access-Control-Allow-Origin' header is present on the requested resource.

我在谷歌上搜索到这是标题的问题，尝试以不同的方式传递它们，但没有成功。

  var requestURL = 'http://www.mrsoft.by/data.json';
  var request = new XMLHttpRequest();
  request.open('GET', requestURL);
  request.responseType = 'json';
  request.send();
  request.onload = function() {
    var obj = request.response;
    console.log(obj);
  }

Дмитрий Сухоцкий

Asked: 2020-05-03 16:36:34 +0000 UTC

删除/添加项目

1

删除复选框后如何正确实现块的删除？为什么删除只对最初创建的块起作用？

var el = document.querySelectorAll(".input__td");
let block = document.querySelector(".footer__blockPrice");
el.forEach(elem => {
  
  elem.addEventListener("click", () => {
    
    if (elem.checked) {
      
      var div = document.createElement('div');
      div.className = "footer__btn " + elem.id;
      
      div.innerHTML = elem.parentElement.nextElementSibling.innerHTML + "<button class='footer__shutdown'></button>";
      block.appendChild(div);
    } else {

      var divBtn = block.querySelector("." + elem.id);
      block.removeChild(divBtn);
    }
  })
})
    
    
    var delBtn = document.getElementsByClassName("footer__shutdown");
    for (let i = 0; i < delBtn.length; i++) {
      delBtn[i].addEventListener("click", () => {
        delBtn[i].parentElement.remove();
      })
    }

table {
  margin-bottom: 20px;
}

.footer__btn {
  display: inline-block;
  padding: 10px 15px;
  margin: 10px;
  border-radius: 25px;
  border: 0.5px solid black 
}

.footer__shutdown {
  text-align: center;
  width: 30px;
  height: 20px;
  margin-left: 5px;
  cursor: pointer;
}

 <table>
    <thead>
      <tr>
        <th><input type="checkbox" id="checkbox-id-all" /> <label for="checkbox-id"></label></th>
        <th>Номер заказа</th>
        <th>Сумма</th>
      </tr>
    </thead>
    <tbody>
      <tr>
        <td data-label="">
          <input type="checkbox" class="input__td" id="checkbox-id1"  checked/>
          <label for="checkbox-id1"></label>
        </td>
        <td data-label="Номер заказа" class="number">#1 204 888</td>
        <td data-label="Сумма" class="typeWork">19 332₽</td>
      </tr>
      <tr>
        <td data-label="">
          <input type="checkbox" class="input__td" id="checkbox-id1"  />
          <label for="checkbox-id1"></label>
        </td>
        <td data-label="Номер заказа" class="number">#1 204 890</td>
        <td data-label="Сумма" class="typeWork">15 332₽</td>
      </tr>
    </tbody>
  </table>
  
  <div class="balance-footer footer">
    <span class="footer__total">Итого к оплате заказы:</span>
    <div class="footer__blockPrice" id="footer__blockPrice">
      <div class="footer__btn">#1 204 888 <button class="footer__shutdown">X</button></div> 
    </div>
    <div class="footer__price">
      на сумму: <span>____ ₽</span>
      <button class="footer__toPay">Оплатить</button>
    </div>


  </div>

Дмитрий Сухоцкий

Asked: 2020-01-21 03:36:20 +0000 UTC

更新数组元素值

0

更新值时遇到错误。我传递了值，但状态没有更新。我正在寻找传递的ID。因此，NewArr 数组接收到不正确的数据。

state = {
mobile : [
  {"id": 0, "name": "Dima", "phone": 12345},
  {"id": 1, "name": "Ira", "phone": 67890},
]

 saveItem = (name,phone,id) => {
let NewArr = this.state.mobile;
NewArr = NewArr.map(el => {
  if (el.id === id) {
    el.name = name;
    el.phone = phone
  }
  return NewArr;
})
this.setState({
  mobile: NewArr,
  read:false
})

我正在尝试像这样更新，但我不知道如何找到 NewMobile[index] 索引。最有可能在过滤器中，但如何将其转移到外部不起作用

    const newItem = {
  id: id,
  name: text,
  phone: phone
}
let NewArray = this.state.mobile.filter(el => el.id === id);
const a = this.state.mobile.indexOf(NewArray);
NewArray = newItem;
const NewMobile = this.state.mobile;
NewMobile[a] = NewArray;
this.setState({
  mobile: NewMobile

})

Дмитрий Сухоцкий

Asked: 2020-12-21 14:37:56 +0000 UTC

道具不显示

1

任务：option里面有个select，我通过map从object中推导出名字（name），改变当前状态。选择一个选项后，我想在屏幕上显示选择的选项(<p>{this.props.valueSelect}</p>)，但没有显示。

零件

import React, { Component } from 'react'
import Check from './conponent/Check'
import List from './conponent/List'
import './App.css';

class App extends Component {

constructor(){
  super();

  this.state = {
    monument: [{
      "id" : 1,
      "name": "Памятник №1",
      "color": ["Blue","Red", "White"],
      "width": 300,
      "heigth": 100,
      "price": 50,
      "country": "Russia",
      "url": "https://i.ibb.co/Nx8k7NJ/pam1.png"
    },
    {
      "id" : 2,
      "name": "Памятник №2",
      "color": ["Blue","Red", "White"],
      "width": 300,
      "heigth": 100,
      "price": 50,
      "country": "Russia",
      "url": "https://i.ibb.co/Nx8k7NJ/pam1.png"
     }],
    valueSelect: " "
  }
}

  render() {
    return (
      <>
      <List 
        monumentObj = {this.state.monument}
        valueSelect = {this.state.valueSelect}
      />
      </>
    );
  }
}

Select.js 组件

export default App;
import React, { Component } from 'react';
export default class Select extends Component {

handleChange = (e) => {
    this.setState({
        valueSelect: e.target.value
    }, () => console.log(this.state.valueSelect))
    this.forceUpdate();
}
render () {
    return (
        <select value = {this.props.valueSelect} onChange={this.handleChange} >
            {
                this.props.monumentObj.map(i => {
                    return(
                        <option key={i.id} value = {i.name}>{i.name}</option>
                    )
                })
            }
        </select>

    )
};
}

零件

import React, { Component } from 'react';
import Collage from './Collage'
import Select from './Select'

export default class List extends Component {


  render() {
      return (
        <div className="List">
          <Select 
            monumentObj = {this.props.monumentObj} 
          />
          <Collage 
           monumentObj = {this.props.monumentObj}
           valueSelect = {this.props.valueSelect}
          />
        </div>
      );

  }
}

零件

import React, { Component } from 'react';
export default class Collage extends Component {

    render () {
        return (
            <div>
            {
                this.props.monumentObj.map(i => {
                    return (
                        <>
                        <h3>{i.name}</h3>
                        <p>{this.props.valueSelect}</p>
                        </>
                    )
                })
            }
            </div>
        )
    };
}

Дмитрий Сухоцкий

Asked: 2020-07-09 18:05:17 +0000 UTC

数据到ajax表

0

我正在实现一个用于添加/删除记录的表。数据是通过表单写入到表中，但是在窗口重载后才显示（我想实现不重载）。我阅读了有关 ajax 的信息，我尝试使用它，但添加到表中不起作用。

在表中，我从数据库中推断出价值。通过单击添加字段，将打开一个模式窗口并捕获数据

<table class="table" id="tableID">

  <thead class="thead-light">
  <tr>
      <th scope="col">id <span class="active sortid">↓</span><span>↑</span></th>
      <th scope="col">Name <span class="active sortname">↓</span><span>↑</span></th>
      <th scope="col">Price <span class="active sortprice">↓</span><span>↑</span></th>
      <th scope="col">Rating <span class="active sortrating">↓</span><span>↑</span></th>
    </tr>
    </thead>
  <tbody>
      <?php
      $result = mysqli_query($link,"SELECT id,name,price,rating FROM product");
      while($row = mysqli_fetch_array($result)) {
        echo '<tr>
        <th scope="row">'.$row['id'].'</th>
        <td>'.$row['name'].'</td>
        <td>'.$row['price'].'</td>
        <td>'.$row['rating'].'</td>
        <td><button type="button" id="'.$row['id'].'" class="btn btn-primary edit">edit field</button></td>
        <td><button type="button" data_id="'.$row['id'].'" class="btn btn-danger delete">delete field</button></td>
    </tr>';
      }
        ?>

  </tbody>

</table>

<button type="button" class="btn btn-primary bye">add field</button>

<div class="modal" id="window">
  <div class="modal-dialog" role="document">
    <div class="modal-content">
      <div class="modal-header">
        <h5 class="modal-title">Modal title</h5>
        <button type="button" class="close" data-dismiss="modal" aria-label="Close">
          <span aria-hidden="true">&times;</span>
        </button>
      </div>
      <div class="modal-body">
      <form class="b-popup" id="popup1"  method="post" id="ajax_form" action="">
        <div class="form-group">
          <label for="name">name</label>
          <input type="text" class="form-control" name="name" id="name"  placeholder="Enter name">
          <label for="price">price</label>
          <input type="text" class="form-control" name="price" id="price"  placeholder="Enter price">
          <label for="rating">rating</label>
          <input type="text" class="form-control" name="rating" id="rating"  placeholder="Enter rating">
        </div>
        <button type="submit" class="btn btn-primary btn2" data-dismiss="modal" >Submit</button>
      </form>
      </div>
    </div>
  </div>
</div>

在这里它实现了 ajax 并将其传递给addfield.php以写入数据库

 $(document).ready(function() {
    $('#ajax_form').submit(function(event){
        event.preventDefault(); //останавливаем стандартную отправку
        var name = $("#name").val();
        var price = $("#price").val();
        var rating = $("#rating").val();
        $.ajax({
            type: "POST",
            url: "add_field.php",
            data: {"name": name, "price": price,"rating": rating},
            cache: false,
            success: 
               $('#tableID').append('<tr><td>price</td></tr><tr><td>".$name."</td></tr>');

            }

        });
    });

 });

addfield.php

<?php 
include ("db.php");
    $name = $_POST['name'];
    $price = $_POST['price'];
    $rating = $_POST['rating'];
    $link = db_connect();
    $result = mysqli_query($link,"INSERT INTO product (id,
                                               name,
                                               price,
                                               rating) 
                                    VALUE      (null,
                                               '$name',
                                               '$price',
                                               '$rating')");


?>

Дмитрий Сухоцкий

Asked: 2020-06-01 16:13:40 +0000 UTC

做hr的简单方法

0

.preim {
  background-color: #292929;
  position: relative; }
  .preim__caption {
    color: white;
    font-family: 'Proxima_Nova_Semibold', sans-serif;
    font-size: 30px;
    width: 488px;
    margin-left: 170px;
    padding-bottom: 50px; }
  .preim__items {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    padding-bottom: 70px; }
  .preim__item {
    width: 20%;
    text-align: left;
    padding: 0 30px; }
  .preim__title {
    color: white;
    font-family: "Proxima_Nova";
    font-size: 18px;
    padding: 15px 0 20px; }
  .preim__disc {
    color: #e8e7e7;
    font-family: "Proxima_Nova";
    font-size: 13px;
    font-weight: 300;
    line-height: 15px;
    width: 170px; }
  .preim__icon {
    width: 68px;
    height: 68px;
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    position: relative;
    z-index: 3; }
    .preim__icon img {
      border-radius: 50%;
      background-color: #27a4ff;
      position: absolute;
      top: 0;
      right: 0;
      left: 0;
      bottom: 0;
      margin: auto; }
    .preim__icon-block {
      background: red;
      width: 100px;
      position: relative;
      z-index: 2; }
  .preim__lines {
    position: absolute;
    top: 144px;
    width: 90%;
    z-index: 1; }
  .preim__line {
    width: 85%;
    height: 0px;
    border-bottom: 3px dashed #27a4ff;
    position: relative;
    margin-top: 35px;
    margin-bottom: 20px;
    margin: 0; }
  .preim__line:after {
    content: "";
    border-left: 10px solid #27a4ff;
    border-right: 0px solid transparent;
    border-top: 8px solid transparent;
    border-bottom: 5px solid transparent;
    position: absolute;
    left: 100%;
    top: -5px; }
    @mixin line {
    width: 85%;
    height: 0px;
    border-bottom: 3px dashed #27a4ff;
    position: relative;
    margin-top: 35px;
    margin-bottom: 20px
}
@mixin lineAfter {
    content: "";
    border-left: 10px solid #27a4ff;
    border-right: 0px solid transparent;
    border-top: 8px solid transparent;
    border-bottom: 5px solid transparent;
    position: absolute;
    left: 100%;
    top: -5px;
}

<section class="preim">
  <div class="preim__lines">
    <div class="preim__line"></div>
  </div>
  <div class="container">
    <div class="preim__caption">Несколько преимуществ и причин, почему выбирают именно нас:</div>
    <div class="preim__items">
      <div class="preim__item">
        <div class="preim__icon"><img src="../img/preim/adv_icon_1.png" width="50px" height="50px" alt="img1"/></div>
        <div class="preim__title">Приемлемая цена</div>
        <p class="preim__disc">Компания осуществляет международные автомобильные перевозки уже более  10 лет. </p>
      </div>
      <div class="preim__item">
        <div class="preim__icon"><img src="../img/preim/adv_icon_2.png" width="50px" height="50px" alt="img2"/></div>
        <div class="preim__title">Скорость работы</div>
        <p class="preim__disc">Компания осуществляет международные автомобильные перевозки уже более  10 лет.</p>
      </div>
      <div class="preim__item">
        <div class="preim__icon-block">
          <div class="preim__icon"><img src="../img/preim/adv_icon_3.png" width="50px" height="50px" alt="img3"/></div>
        </div>
        <div class="preim__title">Свои грузчики</div>
        <p class="preim__disc">Компания осуществляет международные автомобильные перевозки уже более  10 лет. </p>
      </div>
    </div>
  </div>
</section>.

告诉我用什么简单的方法来制作如图所示的蓝色小时。我想到了伪元素，但这并不方便。

问题如何在hr上方制作红色背景？z-index 没有帮助

Дмитрий Сухоцкий

Asked: 2020-03-20 22:30:06 +0000 UTC

香草js画廊

1

先生们，我正在尝试编写一个简单的画廊，将图像切换为 js。从平庸的例子中，我发现了这一点。我所理解的 - 评论。我寻求帮助以咀嚼代码或用更简单的代码替换它。

    var largeImg = document.getElementById('largeImg');// находим главную
    document.getElementById('thumbs').onclick = function(event) { //по нажатию ловим событие блока thumbs
        var target = event.target; //как понимаю элемент который нажали

        while (target != this) { //здесь теряюсь, если нажатый эл. не из thumbs тогда

            if (target.nodeName == 'A') { //если родитель не А? не понял, ссылка просто "а"
            showThumbnail(target.href, target.title);//запуск функции 
 и запись вытянутых параметров из нажатого элемента 
            return false; // ?
            }

            target = target.parentNode; //если иф не отработал - то?
        }
}

function showThumbnail(href, title) { // сама функция присвоения новых параментов 
  largeImg.src = href;
  largeImg.alt = title;
}

  #largeImg {
    border: solid 1px red;
    width: 550px;
    height: 400px;
    padding: 5px;
  }
  
  #thumbs a {
    border: solid 1px blue;
    width: 200px;
    height: 200px;
    padding: 3px;
    margin: 2px;
    float: left;
  }
  
  #thumbs a:hover {
    border-color: #FF9900;
  }

<div class="section">
    <div class="container">
        <div class="row">
  <p><img id="largeImg" src="./img/bmwx6.jpg" alt="Large image"></p>
</div>
<div class="row">
  <div id="thumbs">
    <a href="./img/auto1.jpg" title="Image 3"><img src="./img/auto1.jpg" width="100%" height="100%"></a>
    <a href="./img/auto2.jpg" title="Image 4"><img src="./img/auto2.jpg" width="100%" height="100%"></a>
    <a href="./img/avtoservice.jpg" title="Image 5"><img src="./img/avtoservice.jpg" width="100%" height="100%"></a>
    <a href="./img/banner.jpg" title="Image 6"><img src="./img/banner.jpg" width="100%" height="100%"></a>
  </div>
</div>
</div>
</div>

Дмитрий Сухоцкий

Asked: 2020-02-20 23:00:58 +0000 UTC

光滑的手风琴js

3

如何制作流畅的手风琴开启。我的意思是它是通过设置街区的高度和 St. Transition 来调节的。不给鱼，用文字自己做。

var btn_title = document.querySelectorAll('.test_title');
var disc = document.querySelectorAll('.test_disc');

for (var i = 0; i < btn_title.length; i++) {
  btn_title[i].addEventListener('click', fun_open);

  function fun_open(event) {
    for (var i = 0; i < btn_title.length; i++) {
      disc[i].classList.remove('test_disc_show');
      if (btn_title[i] == event.currentTarget) {
        disc[i].classList.toggle('test_disc_show');
      }
    }

  }

}

html .test {
  height: 1000px;
}

html .test_title {
  width: 180px;
  height: 30px;
  background: red;
  border: 1px solid black;
}

html .test_disc {
  width: 180px;
  height: 80px;
  background: blue;
  display: none;
  border: 1px solid black;
}

html .test_disc_show {
  display: block;
  transition: all 0.9s;
}

<div class="test">
  <div class="test_title test_title_one">test_title test_title_one</div>
  <!-- /.test_title -->
  <div class="test_disc test_disc_one">test_disc test_disc_one</div>
  <!-- /.test_disc -->
  <div class="test_title test_title_two">test_title test_title_two</div>
  <!-- /.test_title -->
  <div class="test_disc test_disc_two">test_disc test_disc_two</div>
  <!-- /.test_disc -->
  <div class="test_title test_title_one">test_title test_title_one</div>
  <!-- /.test_title -->
  <div class="test_disc test_disc_one">test_disc test_disc_one</div>
  <!-- /.test_disc -->
  <div class="test_title test_title_two">test_title test_title_two</div>
  <!-- /.test_title -->
  <div class="test_disc test_disc_two">test_disc test_disc_two</div>
  <!-- /.test_disc -->
</div>
<!-- /.test -->

Дмитрий Сухоцкий

Asked: 2020-02-09 20:54:55 +0000 UTC

768px 的网格不会改变

1

请帮我解决问题。为自适应指定了必要的类。在 768 像素处它不会改变。在检查器中，@media (min-width: 768px) .col-md-6 { 以该分辨率写入，但块不太可能（如果 .col-md-6）。我哪里错了？大于和小于 768px 根据需要显示。

* {
  margin: 0;
  padding: 0;
  font-size: 10px;
  box-sizing: border-box;
}


/*-------------------------------------- header ---------------------------- */

.header-menu-col {
  display: flex;
  flex-direction: row;
  justify-content: space-between;
  align-items: center;
  margin-top: 40px;
}

.header-section {
  background-color: #e9e9e9;
  position: relative;
  overflow: hidden;
}

.header-section .img-bg {
  background-repeat: no-repeat;
  opacity: .1;
  position: absolute;
  top: 0px;
  height: 100%;
}

.header-section .menu ul {
  display: flex;
  list-style-type: none;
}

.header-section .menu ul a {
  text-decoration: none;
  padding: 0 15px;
  color: #191919;
  font-family: "Montserrat";
  font-size: 12px;
  font-weight: bold;
  line-height: 24px;
  text-transform: uppercase;
}

.header-section .menu ul a:hover {
  color: #10c9c3;
}

.header-section .menu ul a.active {
  color: #10c9c3;
  letter-spacing: 1.2px;
}

.caption-header {
  justify-content: flex-end;
}

.caption-header h1 {
  color: #1d1d1d;
  font-family: "Montserrat";
  font-size: 38px;
  font-weight: bold;
  line-height: 48px;
}

.caption-header p {
  color: #787878;
  font-family: "Nunito Sans";
  font-size: 18px;
  font-weight: 400;
  line-height: 28px;
  padding: 25px 0;
}

.caption-header-row {
  justify-content: flex-end;
  margin-top: 150px;
}

.caption-header-row a {
  padding: 20px 40px;
  background-color: #10c9c3;
  color: #FFF;
  font-family: "Montserrat";
  font-size: 12px;
  font-weight: 500;
  line-height: 84px;
  text-transform: uppercase;
  letter-spacing: 1.2px;
  text-decoration: none;
}

.caption-header-row a:hover {
  box-shadow: 0 0 10px rgba(0, 0, 0, 0.5);
}

.header-section .slider {
  display: flex;
  flex-direction: row;
  justify-content: center;
  margin: 40px 0 30px;
}

.header-section .slider div {
  border: 1px solid black;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  margin: 0 4px;
  opacity: .4;
  box-shadow: 0 0 10px rgba(0, 0, 0, 0.5);
}

.header-section .slider div.active {
  background-color: #10c9c3;
  opacity: .6;
}

.header-section .slider div:hover {
  background-color: #10c9c3;
  opacity: .6;
}

@media (max-width: 768px) {
  .menu {
    display: none;
  }
  .caption-header-row {
    margin-top: 50px;
  }
  .header-menu-col {
    justify-content: center;
  }
  .caption-header {
    text-align: center;
  }
}

@media (max-width: 568px) {
  .header-section .img-bg {
    overflow: hidden;
  }
}


/*-------------------------------------- /header ---------------------------- */


/*-------------------------------------- about ---------------------------- */

.about-section {
  padding: 50px 0;
  text-align: center;
}

.about-section h1 {
  color: #191919;
  font-family: Montserrat;
  font-size: 30px;
  font-weight: bold;
  line-height: 60px;
}

.about-section p {
  color: #787878;
  font-family: "Nunito Sans";
  font-size: 16px;
  font-weight: 400;
  line-height: 24px;
  padding: 25px 0;
}

@media (max-width: 768px) {
  .about-section p {
    font-size: 14px;
  }
}


/*-------------------------------------- /about ---------------------------- */


/*-------------------------------------- professional-skills-section ---------------------------- */

.row-professional-skills {
  align-items: center;
}

.professional-skills-section .progress {
  height: 3px;
}

.caption-professional-skills h1 {
  color: #171717;
  font-family: Montserrat;
  font-size: 30px;
  font-weight: bold;
  line-height: 84px;
}

.caption-professional-skills p {
  color: #000000;
  font-family: Montserrat;
  font-size: 12px;
  font-weight: bold;
  line-height: 30px;
  text-transform: uppercase;
}

.professional-skills-section img {
  width: 100%;
}

.professional-skills-section .image-block {
  overflow: hidden;
}

.professional-skills-section .lock-design {
  width: 100%;
}

@media (max-width: 768px) {
  .row-professional-skills {
    flex-direction: column-reverse;
  }
  .header-section {
    background-color: red;
  }
}


/*-------------------------------------- /professional-skills-section ---------------------------- */

<!doctype html>
<html>

<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="initial-scale=1" content="width=device-width">
  <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/font-awesome/4.7.0/css/font-awesome.min.css">
  <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0-beta.3/css/bootstrap.min.css" integrity="sha384-Zug+QiDoJOrZ5t4lssLdxGhVrurbmBWopoEl+M6BdEfwnCJZtKxi1KgxUyJq13dy" crossorigin="anonymous">
  <link href="https://fonts.googleapis.com/css?family=Montserrat|Raleway" rel="stylesheet">
  <link rel="stylesheet" type="text/css" href="style/style.css">

</head>

<body>
  <div id="header" class="header-section">
    <img src="https://preview.ibb.co/eG0rvc/header_bg.jpg" alt="header_bg" border="0" class="img-bg">
    <div class="container">
      <div class="row">
        <div class="col-xl-12 header-menu-col">
          <div class="logo">
            <a href="#"><img src="image/logo.png" width="31px" height="25px" alt="logo"></a>
          </div>
          <div class="menu">
            <ul>
              <li class="menu-item"><a class="active" href="#home">home</a></li>
              <li class="menu-item"><a href="#about">about</a></li>
              <li class="menu-item"><a href="#work">work</a></li>
              <li class="menu-item"><a href="#process">process</a></li>
              <li class="menu-item"><a href="#services">services</a></li>
              <li class="menu-item"><a href="#testcontact">testcontact</a></li>
              <li class="menu-item"><a href="#contact">Contact</a></li>
            </ul>
          </div>
          <!-- /============================= /menu =========================== !-->
        </div>
        <!-- /============================= /col logo =========================== !-->
      </div>
      <div class="row caption-header-row">
        <div class="col-sm-12 col-md-6">
          <div class="caption-header">
            <h1>We Design and Develop</h1>
            <p>We are a new design studio based in USA. We have over 20 years of combined experience, and know a thing or two about designing websites and mobile apps.</p>
            <a href="#">contact us</a>
          </div>
        </div>
        <!-- /============================= /col menu =========================== !-->
      </div>
      <!-- /============================= /row =========================== !-->
      <div class="row">
        <div class="col">
          <div class="slider">
            <a href="#">
              <div class="active"></div>
            </a>
            <a href="#">
              <div></div>
            </a>
            <a href="#">
              <div></div>
            </a>
          </div>
        </div>
      </div>
    </div>
    <!-- /============================= /container =========================== !-->
  </div>
  <!-- /============================= /header-section =========================== !-->
  <div id="about" class="about-section">
    <div class="container">
      <div class="row justify-content-center">
        <div class="col-sm-12 col-md-12">
          <div class="caption-about">
            <h1>Abous us</h1>
            <p>Divide have don't man wherein air fourth. Own itself make have night won't make.<br> A you under Seed appear which good give. Own give air without fowl moveth dry first<br> heaven fruit, dominion she'd won't very all.</p>
            <img src="image/signature.png" alt="about us">
          </div>
        </div>
        <!-- /============================= /col  =========================== !-->
      </div>
      <!-- /============================= /row =========================== !-->
    </div>
    <!-- /============================= /container =========================== !-->
  </div>
  <!-- /============================= /about-section =========================== !-->
  <div id="professional-skills" class="professional-skills-section">
    <div class="container">
      <div class="row row-professional-skills">
        <div class="col-12 col-sm-12 col-md-6 professional-skills">
          <div class="caption-professional-skills">
            <h1>Professional Skills</h1>
            <div class="block-design">
              <p>UI/UX Design 75%</p>
              <div class="progress">
                <div class="progress-bar bg-info" role="progressbar" style="width: 75%" aria-valuenow="50" aria-valuemin="0" aria-valuemax="100"></div>
              </div>
            </div>
            <div class="block-design">
              <p>web development 90%</p>
              <div class="progress">
                <div class="progress-bar bg-info" role="progressbar" style="width: 90%" aria-valuenow="50" aria-valuemin="0" aria-valuemax="100"></div>
              </div>
            </div>
            <div class="block-design">
              <p>marketing 65%</p>
              <div class="progress">
                <div class="progress-bar bg-info" role="progressbar" style="width: 65%" aria-valuenow="50" aria-valuemin="0" aria-valuemax="100"></div>
              </div>
            </div>
          </div>
        </div>
        <!-- /============================= /col  =========================== !-->
        <div class="col-12 col-sm-12 col-md-6 ">
          <div class="image-block">
            <img src="image/mobile_top.png" alt="mobile_top">
          </div>
        </div>
      </div>
      <!-- /============================= /row =========================== !-->
    </div>
    <!-- /============================= /container =========================== !-->
  </div>
  <!-- /============================= /about-section =========================== !-->
  <script src="https://code.jquery.com/jquery-3.2.1.slim.min.js" integrity="sha384-KJ3o2DKtIkvYIK3UENzmM7KCkRr/rE9/Qpg6aAZGJwFDMVNA/GpGFF93hXpG5KkN" crossorigin="anonymous"></script>
  <script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.12.9/umd/popper.min.js" integrity="sha384-ApNbgh9B+Y1QKtv3Rn7W3mgPxhU9K/ScQsAP7hUibX39j7fakFPskvXusvfa0b4Q" crossorigin="anonymous"></script>
  <script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0-beta.3/js/bootstrap.min.js" integrity="sha384-a5N7Y/aK3qNeh15eJKGWxsqtnX/wWdSZSKp+81YjTmS15nvnvxKHuzaWwXHDli+4" crossorigin="anonymous"></script>
</body>

</html>

Дмитрий Сухоцкий

Asked: 2020-02-09 18:13:58 +0000 UTC

裁剪背景图像

1

告诉。将图片放在背景中。屏幕缩小时，图片要保持比例，高度等于“header-section”的高度，右边多余的部分要剪掉，不显示。你能解释一下吗。

*{
    margin: 0;
    padding: 0;
    font-size: 10px;
}

/*-------------------------------------- header ---------------------------- */
.header-menu-col {
    display: flex;
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
    margin-top: 40px;
}
.header-section {
    background-color: #e9e9e9;
    padding: 30px 0 90px ;  
}
.header-section .img-bg{
    background-repeat: no-repeat;
    opacity: .1;
    position: absolute;
    top: 0px;
}
.header-section .menu ul{
    display: flex;
    list-style-type: none;
}
.header-section .menu ul a{
    text-decoration: none;
    padding: 0 15px;
    color: #191919;
    font-family: "Montserrat";
    font-size: 12px;
    font-weight: bold;
    line-height: 24px;
    text-transform: uppercase;
}
.header-section .menu ul a:hover {
    color: #10c9c3;  
}
.header-section .menu ul a.active{
    color: #10c9c3;
    letter-spacing: 1.2px;
}
.caption-header {
    justify-content: flex-end;
}
.caption-header h1{
    color: #1d1d1d;
    font-family: "Montserrat";
    font-size: 38px;
    font-weight: bold;
    line-height: 48px;
}
.caption-header p{
    color: #787878;
    font-family: "Nunito Sans";
    font-size: 18px;
    font-weight: 400;
    line-height: 28px;
    padding: 25px 0;
}
.caption-header-row {
    justify-content: flex-end;
    margin-top: 150px;
}
.caption-header-row a{
    padding: 20px 40px;
    background-color: #10c9c3;
    color: #FFF;
    font-family: "Montserrat";
    font-size: 12px;
    font-weight: 500;
    line-height: 84px;
    text-transform: uppercase;
    letter-spacing: 1.2px; 
    text-decoration: none;
}
.caption-header-row a:hover {
    box-shadow: 0 0 10px rgba(0,0,0,0.5);
}

@media (max-width: 768px) {
    .menu {
        display: none;
    }
    .caption-header-row {
        margin-top: 50px;
    }
    .header-menu-col {
        justify-content: center;
    }
    .caption-header {
        text-align: center;
    }
}
@media (max-width: 568px) {
    .header-section .img-bg{
        
        overflow: hidden;
    }
}
/*-------------------------------------- /header ---------------------------- */
/*-------------------------------------- about ---------------------------- */
.about-section {
    padding: 50px 0; 
    text-align: center;  
    
}
.about-section h1 {
    color: #191919;
    font-family: Montserrat;
    font-size: 30px;
    font-weight: bold;
    line-height: 60px;
}
.about-section p {
    color: #787878;
    font-family: "Nunito Sans";
    font-size: 16px;
    font-weight: 400;
    line-height: 24px;
    padding: 25px 0;
}
@media (max-width: 768px) {
    .about-section p {
        font-size: 14px;
}
/*-------------------------------------- /about ---------------------------- */

<!doctype html>
<html>
    <head>
        <meta charset="UTF-8">
         <meta name="viewport" content="initial-scale=1"  content="width=device-width"> 
         <link rel="stylesheet"  href="https://maxcdn.bootstrapcdn.com/font-awesome/4.7.0/css/font-awesome.min.css">
         <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0-beta.3/css/bootstrap.min.css" integrity="sha384-Zug+QiDoJOrZ5t4lssLdxGhVrurbmBWopoEl+M6BdEfwnCJZtKxi1KgxUyJq13dy" crossorigin="anonymous">
         <link href="https://fonts.googleapis.com/css?family=Montserrat|Raleway" rel="stylesheet">
         <link rel="stylesheet" type="text/css" href="style/style.css">
  
</head>
   <body>
        <div id="header" class="header-section">
          <img src="https://preview.ibb.co/eG0rvc/header_bg.jpg" alt="header_bg" border="0" class="img-bg">
          <div class="container">
            <div class="row">
              <div class="col-xl-12 header-menu-col">
                <div class="logo">
                  <a href="#"><img src="image/logo.png" width="31px" height="25px" alt="logo"></a>
                </div>
                <div class="menu">
                  <ul>
                      <li class="menu-item"><a  class="active" href="#home">home</a></li>
                      <li class="menu-item"><a  href="#about">about</a></li>
                      <li class="menu-item"><a  href="#work">work</a></li>
                      <li class="menu-item"><a  href="#process">process</a></li>
                      <li class="menu-item"><a  href="#services">services</a></li>
                      <li class="menu-item"><a  href="#testcontact">testcontact</a></li>
                      <li class="menu-item"><a  href="#contact">Contact</a></li>
                  </ul>
                </div><!-- /============================= /menu =========================== !-->
              </div><!-- /============================= /col logo =========================== !-->
            </div>
            <div class="row caption-header-row">
              <div class="col-sm-12 col-md-6">
                <div class="caption-header">
                  <h1>We Design and Develop</h1>
                  <p>We are a new design studio based in USA. We have over 
                      20 years of combined experience, and know a thing or two 
                      about designing websites and mobile apps.</p>
                  <a href="#">contact us</a>
                </div>
              </div><!-- /============================= /col menu =========================== !-->
            </div><!-- /============================= /row =========================== !-->
          </div><!-- /============================= /container =========================== !-->
        </div><!-- /============================= /header-section =========================== !-->
        <div id="about" class="about-section">
            <div class="container">
              <div class="row justify-content-center">
                <div class="col-sm-12 col-md-12">
                  <div class="caption-about">
                    <h1>Abous us</h1>
                    <p>Divide have don't man wherein air fourth. Own itself make have night won't make.<br> 
                        A you under Seed appear which good give. Own give air without fowl moveth dry first<br>
                        heaven fruit, dominion she'd won't very all.</p>
                    <img src="image/signature.png" alt="about us">
                  </div>
                </div><!-- /============================= /col  =========================== !-->
              </div><!-- /============================= /row =========================== !-->
            </div><!-- /============================= /container =========================== !-->
        </div><!-- /============================= /about-section =========================== !-->       
        <script src="https://code.jquery.com/jquery-3.2.1.slim.min.js" integrity="sha384-KJ3o2DKtIkvYIK3UENzmM7KCkRr/rE9/Qpg6aAZGJwFDMVNA/GpGFF93hXpG5KkN" crossorigin="anonymous"></script>
        <script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.12.9/umd/popper.min.js" integrity="sha384-ApNbgh9B+Y1QKtv3Rn7W3mgPxhU9K/ScQsAP7hUibX39j7fakFPskvXusvfa0b4Q" crossorigin="anonymous"></script>
        <script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0-beta.3/js/bootstrap.min.js" integrity="sha384-a5N7Y/aK3qNeh15eJKGWxsqtnX/wWdSZSKp+81YjTmS15nvnvxKHuzaWwXHDli+4" crossorigin="anonymous"></script>
    </body>
</html>

Дмитрий Сухоцкий

Asked: 2020-02-09 14:31:47 +0000 UTC

引导 768px 网格

0

解释为什么@media 不适用于 768 像素。我知道问题在网格≥768px，但是如何解决呢？

*{
    margin: 0;
    padding: 0;
    font-size: 10px;
}

/*-------------------------------------- header ---------------------------- */
.header-menu-col {
    display: flex;
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
    margin-top: 40px;
}
.header-section {
    background-color: #e9e9e9;
    padding: 30px 0 90px ;
}
.header-section .menu ul{
    display: flex;
    list-style-type: none;
}
.header-section .menu ul a{
    text-decoration: none;
    padding: 0 15px;
    color: #191919;
    font-family: "Montserrat";
    font-size: 12px;
    font-weight: bold;
    line-height: 24px;
    text-transform: uppercase;
}
.header-section .menu ul a:hover {
    color: #10c9c3;  
}
.header-section .menu ul a.active{
    color: #10c9c3;
    letter-spacing: 1.2px;
}
.caption-header {
    justify-content: flex-end;
}
.caption-header h1{
    color: #1d1d1d;
    font-family: "Montserrat";
    font-size: 38px;
    font-weight: bold;
    line-height: 48px;
}
.caption-header p{
    color: #787878;
    font-family: "Nunito Sans";
    font-size: 18px;
    font-weight: 400;
    line-height: 28px;
    padding: 25px 0;
}
.caption-header-row {
    justify-content: flex-end;
    margin-top: 150px;
}
.caption-header-row a{
    padding: 20px 40px;
    background-color: #10c9c3;
    color: #FFF;
    font-family: "Montserrat";
    font-size: 12px;
    font-weight: 500;
    line-height: 84px;
    text-transform: uppercase;
    letter-spacing: 1.2px; 
    text-decoration: none;
}
.caption-header-row a:hover {
    box-shadow: 0 0 10px rgba(0,0,0,0.5);
}

@media (max-width: 768px) {
    .menu {
        display: none;
    }
    .caption-header-row {
        margin-top: 50px;
    }
    .header-menu-col {
        justify-content: center;
    }
    .caption-header {
        text-align: center;
    }
}
/*-------------------------------------- /header ---------------------------- */

<!doctype html>
<html>
    <head>
        <meta charset="UTF-8">
         <meta name="viewport" content="initial-scale=1"  content="width=device-width"> 
         <link rel="stylesheet"  href="https://maxcdn.bootstrapcdn.com/font-awesome/4.7.0/css/font-awesome.min.css">
         <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0-beta.3/css/bootstrap.min.css" integrity="sha384-Zug+QiDoJOrZ5t4lssLdxGhVrurbmBWopoEl+M6BdEfwnCJZtKxi1KgxUyJq13dy" crossorigin="anonymous">
         <link href="https://fonts.googleapis.com/css?family=Montserrat|Raleway" rel="stylesheet">
         <link rel="stylesheet" type="text/css" href="style/style.css">
  
</head>
   <body>
        <div id="header" class="header-section">
          <div class="container">
            <div class="row">
              <div class="col-xl-12 header-menu-col">
                <div class="logo">
                  <a href="#"><img src="image/logo.png" width="31px" height="25px" alt="logo"></a>
                </div>
                <div class="menu">
                  <ul>
                      <li class="menu-item"><a  class="active" href="#home">home</a></li>
                      <li class="menu-item"><a  href="#about">about</a></li>
                      <li class="menu-item"><a  href="#work">work</a></li>
                      <li class="menu-item"><a  href="#process">process</a></li>
                      <li class="menu-item"><a  href="#services">services</a></li>
                      <li class="menu-item"><a  href="#testcontact">testcontact</a></li>
                      <li class="menu-item"><a  href="#contact">Contact</a></li>
                  </ul>
                </div><!-- /============================= /menu =========================== !-->
              </div><!-- /============================= /col logo =========================== !-->
            </div>
            <div class="row caption-header-row">
              <div class="col-md-6 col-sm-12">
                <div class="caption-header">
                  <h1>We Design and Develop</h1>
                  <p>We are a new design studio based in USA. We have over 
                      20 years of combined experience, and know a thing or two 
                      about designing websites and mobile apps.</p>
                  <a href="#">contact us</a>
                </div>
              </div><!-- /============================= /col menu =========================== !-->
            </div><!-- /============================= /row =========================== !-->
          </div><!-- /============================= /container =========================== !-->
        </div><!-- /============================= /section =========================== !-->
        
        <script src="https://code.jquery.com/jquery-3.2.1.slim.min.js" integrity="sha384-KJ3o2DKtIkvYIK3UENzmM7KCkRr/rE9/Qpg6aAZGJwFDMVNA/GpGFF93hXpG5KkN" crossorigin="anonymous"></script>
        <script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.12.9/umd/popper.min.js" integrity="sha384-ApNbgh9B+Y1QKtv3Rn7W3mgPxhU9K/ScQsAP7hUibX39j7fakFPskvXusvfa0b4Q" crossorigin="anonymous"></script>
        <script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0-beta.3/js/bootstrap.min.js" integrity="sha384-a5N7Y/aK3qNeh15eJKGWxsqtnX/wWdSZSKp+81YjTmS15nvnvxKHuzaWwXHDli+4" crossorigin="anonymous"></script>
    </body>
</html>

Дмитрий Сухоцкий

Asked: 2020-02-08 22:05:51 +0000 UTC

删除右侧的填充（白条）

0

1.告诉我如何去除条带 2.因为它出现了什么？（小于 768Px）

*{
    margin: 0;
    padding: 0;
    font-size: 10px;
}
.header-menu-col {
    display: flex;
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
    margin-top: 40px;
}
.header-section {
    background-color: #e9e9e9;
    padding: 30px 0 90px ;
}
.header-section .menu ul{
    display: flex;
    list-style-type: none;
}
.header-section .menu ul a{
    text-decoration: none;
    padding: 0 15px;
    color: #191919;
    font-family: "Montserrat";
    font-size: 12px;
    font-weight: bold;
    line-height: 24px;
    text-transform: uppercase;
}
.header-section .menu ul a:hover {
    color: #10c9c3;  
}
.header-section .menu ul a.active{
    color: #10c9c3;
    letter-spacing: 1.2px;
}
.caption-header {
    justify-content: flex-end;
}
.caption-header h1{
    color: #1d1d1d;
    font-family: "Montserrat";
    font-size: 38px;
    font-weight: bold;
    line-height: 48px;
}
.caption-header p{
    color: #787878;
    font-family: "Nunito Sans";
    font-size: 18px;
    font-weight: 400;
    line-height: 28px;
    padding: 25px 0;
}
.caption-header-row {
    justify-content: flex-end;
    margin-top: 150px;
}
.caption-header-row a{
    padding: 20px 40px;
    background-color: #10c9c3;
    color: #FFF;
    font-family: "Montserrat";
    font-size: 12px;
    font-weight: 500;
    line-height: 84px;
    text-transform: uppercase;
    letter-spacing: 1.2px; 
    text-decoration: none;
}
.caption-header-row a:hover {
    box-shadow: 0 0 10px rgba(0,0,0,0.5);
}

@media (max-width: 768px) {
    .menu {
        visibility: hidden;
    }
}

<!doctype html>
<html>
    <head>
        <meta charset="UTF-8">
         <meta name="viewport" content="initial-scale=1"  content="width=device-width"> 
         <link rel="stylesheet"  href="https://maxcdn.bootstrapcdn.com/font-awesome/4.7.0/css/font-awesome.min.css">
         <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0-beta.3/css/bootstrap.min.css" integrity="sha384-Zug+QiDoJOrZ5t4lssLdxGhVrurbmBWopoEl+M6BdEfwnCJZtKxi1KgxUyJq13dy" crossorigin="anonymous">
         <link href="https://fonts.googleapis.com/css?family=Montserrat|Raleway" rel="stylesheet">
         <link rel="stylesheet" type="text/css" href="style/style.css">
  
</head>
   <body>
        <div id="header" class="header-section">
          <div class="container">
            <div class="row">
              <div class="col-xl-12 header-menu-col">
                <div class="logo">
                  <a href="#"><img src="image/logo.png" width="31px" height="25px" alt="logo"></a>
                </div>
                <div class="menu">
                  <ul>
                      <li class="menu-item"><a  class="active" href="#home">home</a></li>
                      <li class="menu-item"><a  href="#about">about</a></li>
                      <li class="menu-item"><a  href="#work">work</a></li>
                      <li class="menu-item"><a  href="#process">process</a></li>
                      <li class="menu-item"><a  href="#services">services</a></li>
                      <li class="menu-item"><a  href="#testcontact">testcontact</a></li>
                      <li class="menu-item"><a  href="#contact">Contact</a></li>
                  </ul>
                </div><!-- /============================= /menu =========================== !-->
              </div><!-- /============================= /col logo =========================== !-->
            </div>
            <div class="row caption-header-row">
              <div class="col-xl-6 col-sm-12">
                <div class="caption-header">
                  <h1>We Design and Develop</h1>
                  <p>We are a new design studio based in USA. We have over 
                      20 years of combined experience, and know a thing or two 
                      about designing websites and mobile apps.</p>
                  <a href="#">contact us</a>
                </div>
              </div><!-- /============================= /col menu =========================== !-->
            </div><!-- /============================= /row =========================== !-->
          </div><!-- /============================= /container =========================== !-->
        </div><!-- /============================= /section =========================== !-->
        
        <script src="https://code.jquery.com/jquery-3.2.1.slim.min.js" integrity="sha384-KJ3o2DKtIkvYIK3UENzmM7KCkRr/rE9/Qpg6aAZGJwFDMVNA/GpGFF93hXpG5KkN" crossorigin="anonymous"></script>
        <script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.12.9/umd/popper.min.js" integrity="sha384-ApNbgh9B+Y1QKtv3Rn7W3mgPxhU9K/ScQsAP7hUibX39j7fakFPskvXusvfa0b4Q" crossorigin="anonymous"></script>
        <script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0-beta.3/js/bootstrap.min.js" integrity="sha384-a5N7Y/aK3qNeh15eJKGWxsqtnX/wWdSZSKp+81YjTmS15nvnvxKHuzaWwXHDli+4" crossorigin="anonymous"></script>
    </body>
</html>

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