查找兄弟元素
作者：互联网
示例
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<!DOCTYPE html>
<html>
<head>
<title>访问元素</title>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<style>
.mycolor{
color:#fff;
}
.steam{
color: red;
}
</style>
</head>
<body>
<ul id="ul">
<li id="ali">油条</li><li id="bli">包子</li><li id="cli">米饺</li><li id="dli"><a id="yufen">鱼粉</a></li>
</ul>
<script>
// 查找父节点
var tempel = document.getElementById("bli");
tempel.className="steam";
var previousNode = tempel.previousSibling;
previousNode.className="mycolor";
var nextNode = tempel.nextSibling;
nextNode.className="mycolor";
</script>
</body>
</html>
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标签：tempel,元素,mycolor,li,className,兄弟,查找,var,id 来源： https://www.cnblogs.com/max-hou/p/11168122.html