<!DOCTYPE html>
<html>
<head>
	<meta charset="utf-8">
	<meta http-equiv="X-UA-Compatible" content="IE=edge">
	<title>js常用事件</title>
	<link rel="stylesheet" href="">
	<style>
		.man{
			width: 100px;
			height: 100px;
			background-color: pink;
		}
	</style>
</head>
<body>
	<div class="man"></div>
	<div class="man"></div>
	<div class="man"></div>
</body>
<script>
	//document.getElementById();
	//获取className
	var divs = document.getElementsByClassName("man");
	//获取标签
	var tags=document.getElementsByTagName("div");

	for(var i=0; i<divs.length; i++){
        divs[i].style.backgroundColor = "green";
    }

    for(var i=0; i<tags.length; i++){
        tags[i].style.backgroundColor = "red";
    }
</script>
</html>

 

最后修改于 2021-04-01 08:31:21
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