当我向div.innerHTML中添加内容时，事件监听器不起作用

Question

this is my code : 这是我的代码：

<html>
<head>
    <script type="text/javascript" language="javascript">
        function load() {
            div1 = document.getElementById('div1');
            div2 = document.getElementById('div2');
            function clicky() {
                alert('1');
            }
            div2.addEventListener('click', clicky);
            //div1.innerHTML += 'ooooooofdsfdsfdsfdsfdsfsdfdsfdsfdsfdsklfdsjfkldsjfkldsjfldsjfkldsjfkldsjfdskl';
        }       
    </script>
</head>
<body onload="load();">
    <div id="div1" style="width : 300px; height : 300px; background-color : red; position : absolute">

        <div id="div2" style="width : 20px; height : 20px; background-color : green; position : absolute; right : 5px; top : 5px;">X</div>

    </div>
</body>

So, I have div2 in div1. 因此，我在div1中有div2。 If commented string is really commented, everything works : clicking on div2 causes alert. 如果注释字符串确实被注释，则一切正常：单击div2会引起警报。 But if I add smth to div1.innerHTML, event handler doesn't work. 但是，如果我将smth添加到div1.innerHTML，则事件处理程序将不起作用。 Where is the problem? 问题出在哪儿？

Answer 1

Your code 您的密码

div1.innerHTML += 'ooooooofdsfdsfdsfdsfdsfsdfdsfdsfdsfdsklfdsjfkldsjfkldsjfldsjfkldsjfkldsjfdskl';

actually means 实际上意味着

div1.innerHTML = div1.innerHTML + ooooooofdsfdsfdsfdsfdsfsdfdsfdsfdsfdsklfdsjfkldsjfkldsjfldsjfkldsjfkldsjfdskl';

So in literal sense, you are overwriting the innerHTML of div1 with a new string which inturn creates a new object of div2. 因此，从字面上看，您正在用新字符串覆盖div1的innerHTML，这反过来会创建div2的新对象。 Hence you need to add click listener after the innerHTML is set. 因此，您需要在设置innerHTML之后添加点击监听器。

当我向div.innerHTML中添加内容时，事件监听器不起作用

问题描述

1 个解决方案

解决方案1
1 已采纳 2013-04-06 10:14:49

当我向div.innerHTML中添加内容时，事件监听器不起作用

问题描述

1 个解决方案

解决方案1 1 已采纳 2013-04-06 10:14:49

解决方案1
1 已采纳 2013-04-06 10:14:49