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Никита Попов
Asked:2020-05-17 22:26:37 +0000 UTC2020-05-17 22:26:37 +0000 UTC

对象代码不起作用[重复]

  • 772

按下按钮后，整个页面被简单地替换为白色

function print (text) {
    document.write();
}

var Name, Age;
var y = new Date;

function userValue (name, age, dateOfBirth) {
    this.name =  name;
    this.age =  age;
    this.dateOfBirth = y.getFullYear() - age;
}

function conf() { 
    document.getElementById ('inp1').value = Name;
    document.getElementById ('inp2').value = Age;

    var user1 = new userValue (Name, Age);

    print ('Your name is ' + user1.Name);
    print ('Your age is ' + user1.Age);
    print ('You were born in' + user1.dateOfBirth);
}
<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Document</title>
    <link rel="stylesheet" href="style.css">
</head>
<body>
    <input type="text" placeholder="Input your name" id="inp1">
    <input type="text" placeholder="Input your age" id="inp2">
    <button onclick="conf(this)">Ok</button>
    <script src="script.js"></script>
</body>
</html>

javascript

1 个回答

  1. Best Answer

    都是因为该函数print 包含一个document.write()不接受任何东西的方法。修复document.write(text)它，一切都会好起来的。一切都会出现在页面上，但你传递的变量将是undefinedNaN

    我要补充一点：由于 js 区分大小写，因此您传递给函数的数据print将作为undefined. 看一下 user1 对象中的内容就足够了，它包含所有带有小写字母的属性，这意味着这将是正确的：

    print ('Your name is ' + user1.name);
print ('Your age is ' + user1.age);
print ('You were born in' + user1.dateOfBirth);
    • 2

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