如何检测div或body的变化?

Gib*_*boK 0 html javascript css dojo

我有一个以下脚本,我需要检测:

  • 内容元素有变化(例如大小/位置)或
  • body元素有变化(例如大小/位置)

我不能在按钮本身上使用这个逻辑.

有什么活动?你能提供代码样本吗?

http://jsbin.com/sewerumive/1/

<!DOCTYPE html>
<html>

<head>
    <title></title>
    <meta http-equiv="Content-Type" content="text/html;charset=utf-8" />
    <script>
        window.App = {
            start: function () {
                var btn = document.getElementById('addContent');
                btn.addEventListener('click', function () {
                    var body = document.getElementsByTagName('body')[0];
                    body.innerHTML += '<p>ADDED LATER - Lorem Ipsum is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the industrys standard dummy text ever since the 1500s, when an unknown printer took a galley of type and scrambled it to make a type specimen book. It has survived not only five centuries, but also the leap into electronic typesetting, remaining essentially unchanged. It was popularised in the 1960s with the release of Letraset sheets containing Lorem Ipsum passages, and more recently with desktop publishing software like Aldus PageMaker including versions of Lorem Ipsum.</p>';
                });

                //---
                // does not work i need the content
                window.addEventListener('resize', function () {
                    console.log('content / window / resize');
                });

                var content = document.getElementById('content');
                content.addEventListener('change', function () {
                    console.log('content / div / resize');
                }.bind(this));
            }
        };
    </script>
</head>


<body onload="App.start();">
    <div id="content">
        <button id="addContent" type="button">Add content!</button>
        <p>Lorem Ipsum is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the industry's standard dummy text ever since the 1500s, when an unknown printer took a galley of type and scrambled it to make a type specimen book. It has survived not only five centuries, but also the leap into electronic typesetting, remaining essentially unchanged. It was popularised in the 1960s with the release of Letraset sheets containing Lorem Ipsum passages, and more recently with desktop publishing software like Aldus PageMaker including versions of Lorem Ipsum.</p>
    </div>
</body>

</html>
Run Code Online (Sandbox Code Playgroud)

Ale*_*yan 7

MutationObserver提供了一种对DOM中的任何更改作出反应的方法.

MDNMSDN上阅读更多内容

此线程也在这里输入链接描述