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| <!DOCTYPE html>
<html lang="zh">
<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>Document</title>
<style>
li{
background: #808080;
}
</style>
</head>
<body>
<ul>
<li>1</li>
<li>2</li>
<li>3</li>
<li>4</li>
</ul>
<script type="text/javascript">
var li=document.getElementsByTagName("li");
var ul = document.getElementsByTagName("ul");
for (var i=0;i<li.length;i++) {
}
ul[0].addEventListener("click",function(e){
e.target.style.background='red';
})
</script>
</body>
</html>
|
