<!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>js 原生方法获取所有兄弟节点</title>
</head>
<body>
<ul>
<li id="first">1</li>
<li>2</li>
<li>3</li>
</ul>
<script type="text/javascript">
//方法一：
// function sibling(elem) {
// var r = [];
// var n = elem.parentNode.firstChild;
// for(; n; n = n.nextSibling) {
// if(n.nodeType === 1 && n !== elem) {
// r.push(n);
// }
// }
// return r;
// }
//方法二
function sibling(elm) { var a = []; var p = elm.parentNode.children; for(var i = 0, pl = p.length; i < pl; i++) { if(p[i] !== elm) a.push(p[i]); } return a; } var siblings = sibling(document.getElementById('first')); console.log(siblings); </script>
</body>
</html>
