Question

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>

所以，我在div1中有div2。如果评论字符串确实被评论，一切正常：单击div2会导致警报。但是如果我将divth添加到div1.innerHTML，则事件处理程序不起作用。问题在哪里？

Answer 1

您的代码

div1.innerHTML += 'ooooooofdsfdsfdsfdsfdsfsdfdsfdsfdsfdsklfdsjfkldsjfkldsjfldsjfkldsjfkldsjfdskl';

实际上意味着

div1.innerHTML = div1.innerHTML + ooooooofdsfdsfdsfdsfdsfsdfdsfdsfdsfdsklfdsjfkldsjfkldsjfldsjfkldsjfkldsjfdskl';

所以从字面意义上讲，你用一个新的字符串覆盖div1的innerHTML，这个字符串会创建一个div2的新对象。因此，您需要在设置innerHTML后添加单击侦听器。

当我向div.innerHTML添加内容时，事件监听器不起作用

1 个答案: