RError.com

RError.com Logo RError.com Logo

RError.com Navigation

  • 主页

Mobile menu

Close
  • 主页
  • 系统&网络
    • 热门问题
    • 最新问题
    • 标签
  • Ubuntu
    • 热门问题
    • 最新问题
    • 标签
  • 帮助
主页 / 问题 / 1596357
Accepted
user615708
user615708
Asked:2024-10-11 17:17:30 +0000 UTC2024-10-11 17:17:30 +0000 UTC 2024-10-11 17:17:30 +0000 UTC

按 T​​REE JSON 搜索

  • 772

有一个脚本使用搜索从复杂的 Json 树中选择数据。但只有一个搜索选项进入最终的new_arr数组。例如,在 JSON 字符串中,我有两个具有不同链接的测试元素 - /page和/hello,但生成的数组new_arr只有一个通过链接/page找到的元素。如何确保所有找到的元素最终都在new_arr中?

var treeData='[{"text":"Review","href":"\/","icon":"","target":"_self","page":""},{"text":"Methods","href":"","icon":"","target":"_self","page":"","children":[{"text":"test","href":"/page","icon":"","target":"_self","page":""}]},{"text":"test","href":"/hello","icon":"","target":"_self","page":""}]';

let TREE_DATA = $.parseJSON(treeData);
const findObj = (arr, idToFind) => {
  for (const item of arr) {
    if (item.text.search(new RegExp(idToFind)) != -1) return item;
    if (item.children) {
      const recursiveResult = findObj(item.children, idToFind);
      if (recursiveResult) return recursiveResult;
    }
  }
};

$(document).on('input', '#search_methods', function(e) {
    var text = $(this).val();
    var new_arr = [];
    var cString = findObj(TREE_DATA, text);
    new_arr.push(cString);
    console.log(new_arr);
    
})
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.7.1/jquery.min.js"></script>
<form class="nosubmit">
<input class="nosubmit form-control mb-3" id="search_methods" type="text" placeholder="Search...">
</form>   

jquery
  • 1 1 个回答
  • 19 Views

1 个回答

  • Voted
  1. Best Answer
    Grundy
    2024-10-11T19:22:40Z2024-10-11T19:22:40Z

    当您进行调用时return,您将退出循环和函数。因此,不会查看其余元素。要解决,而不是return仅仅将找到的元素放在某处

    var treeData = '[{"text":"Review","href":"\/","icon":"","target":"_self","page":""},{"text":"Methods","href":"","icon":"","target":"_self","page":"","children":[{"text":"test","href":"/page","icon":"","target":"_self","page":""}]},{"text":"test","href":"/hello","icon":"","target":"_self","page":""}]';
    
    let TREE_DATA = $.parseJSON(treeData);
    const findObj = (arr, idToFind, result = []) => {
      for (const item of arr) {
        if (item.text.search(new RegExp(idToFind)) != -1) result.push(item);
        if (item.children) {
          findObj(item.children, idToFind, result);
        }
      }
    };
    
    $(document).on('input', '#search_methods', function(e) {
      var text = $(this).val();
      var new_arr = []
      findObj(TREE_DATA, text, new_arr);
      console.log(new_arr);
    
    })
    <script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.7.1/jquery.min.js"></script>
    <form class="nosubmit">
      <input class="nosubmit form-control mb-3" id="search_methods" type="text" placeholder="Search...">
    </form>

    替代方案:使用发电机

    var treeData = '[{"text":"Review","href":"\/","icon":"","target":"_self","page":""},{"text":"Methods","href":"","icon":"","target":"_self","page":"","children":[{"text":"test","href":"/page","icon":"","target":"_self","page":""}]},{"text":"test","href":"/hello","icon":"","target":"_self","page":""}]';
    
    let TREE_DATA = $.parseJSON(treeData);
    const findObj = function* f(arr, idToFind) {
      for (const item of arr) {
        if (item.text.search(new RegExp(idToFind)) != -1) yield item;
        if (item.children) {
          yield* f(item.children, idToFind);
        }
      }
    };
    
    $(document).on('input', '#search_methods', function(e) {
      var text = $(this).val();
      var new_arr = [...findObj(TREE_DATA, text)];
      console.log(new_arr);
    
    })
    <script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.7.1/jquery.min.js"></script>
    <form class="nosubmit">
      <input class="nosubmit form-control mb-3" id="search_methods" type="text" placeholder="Search...">
    </form>

    • 2

相关问题

  • jquery轨道输入点击

  • 滑块光滑 nextSlider + 1

  • jquery选择器+获取值

  • JQ Masked Input电话号码填写时如何避免输入数字7和8?

  • 如何获取相邻父级 jQuery 的元素?

  • 如何解析收到的json响应

Sidebar

Stats

  • 问题 10021
  • Answers 30001
  • 最佳答案 8000
  • 用户 6900
  • 常问
  • 回答
  • Marko Smith

    我看不懂措辞

    • 1 个回答
  • Marko Smith

    请求的模块“del”不提供名为“default”的导出

    • 3 个回答
  • Marko Smith

    "!+tab" 在 HTML 的 vs 代码中不起作用

    • 5 个回答
  • Marko Smith

    我正在尝试解决“猜词”的问题。Python

    • 2 个回答
  • Marko Smith

    可以使用哪些命令将当前指针移动到指定的提交而不更改工作目录中的文件?

    • 1 个回答
  • Marko Smith

    Python解析野莓

    • 1 个回答
  • Marko Smith

    问题:“警告:检查最新版本的 pip 时出错。”

    • 2 个回答
  • Marko Smith

    帮助编写一个用值填充变量的循环。解决这个问题

    • 2 个回答
  • Marko Smith

    尽管依赖数组为空,但在渲染上调用了 2 次 useEffect

    • 2 个回答
  • Marko Smith

    数据不通过 Telegram.WebApp.sendData 发送

    • 1 个回答
  • Martin Hope
    Alexandr_TT 2020年新年大赛! 2020-12-20 18:20:21 +0000 UTC
  • Martin Hope
    Alexandr_TT 圣诞树动画 2020-12-23 00:38:08 +0000 UTC
  • Martin Hope
    Air 究竟是什么标识了网站访问者? 2020-11-03 15:49:20 +0000 UTC
  • Martin Hope
    Qwertiy 号码显示 9223372036854775807 2020-07-11 18:16:49 +0000 UTC
  • Martin Hope
    user216109 如何为黑客设下陷阱,或充分击退攻击? 2020-05-10 02:22:52 +0000 UTC
  • Martin Hope
    Qwertiy 并变成3个无穷大 2020-11-06 07:15:57 +0000 UTC
  • Martin Hope
    koks_rs 什么是样板代码? 2020-10-27 15:43:19 +0000 UTC
  • Martin Hope
    Sirop4ik 向 git 提交发布的正确方法是什么? 2020-10-05 00:02:00 +0000 UTC
  • Martin Hope
    faoxis 为什么在这么多示例中函数都称为 foo? 2020-08-15 04:42:49 +0000 UTC
  • Martin Hope
    Pavel Mayorov 如何从事件或回调函数中返回值?或者至少等他们完成。 2020-08-11 16:49:28 +0000 UTC

热门标签

javascript python java php c# c++ html android jquery mysql

Explore

  • 主页
  • 问题
    • 热门问题
    • 最新问题
  • 标签
  • 帮助

Footer

RError.com

关于我们

  • 关于我们
  • 联系我们

Legal Stuff

  • Privacy Policy

帮助

© 2023 RError.com All Rights Reserve   沪ICP备12040472号-5