监听dom节点class的变化

作者: 澄澄真可爱 | 来源:发表于2018-01-23 10:08 被阅读0次

<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>监听dom节点的变化</title>
</head>
<body>
   <div id="div" class="class1">监听dom节点class的变化</div> 
<script>
    var target=document.getElementById('div')
    var options={
        attributes:true,//观察node对象的属性
        attributeFilter:['class']//只观察class属性
    }
    var mb=new MutationObserver(function(mutationRecord,observer){
        console.log(mutationRecord)
        console.log(observer)
    })
    mb.observe(target,options)
    var i=0;
    setInterval(function(){
        target.classList.add('class'+i++)
    },1000)
</script>
</body>
</html>