<!DOCTYPE HTML>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title>nextSibling</title>
</head>
<body>
<ul id="u1">
<li id="a">javascript</li>
<li id="b">jquery</li>
<li id="c">html</li>
</ul>
<ul id="u2">
<li id="d">css3</li>
<li id="e">php</li>
<li id="f">java</li>
</ul>
<script type="text/javascript">
//向后查找方法
function get_nextSibling(n) {
var x = n.nextSibling;
while (x && x.nodeType != 1) {
x = x.nextSibling;
}
return x;
}
//向前查找方法
function get_previousSibling(n) {
var x = n.previousSibling;
while (x && x.nodeType != 1) {
x = x.previousSibling;
}
return x;
}
var x = document.getElementsByTagName("li")[1];
document.write(x.nodeName);
document.write(" = ");
document.write(x.innerHTML);
var y = get_nextSibling(x);
if (y != null) {
document.write("<br />nextsibling: ");
document.write(y.nodeName);
document.write(" = ");
document.write(y.innerHTML);
} else {
document.write("<br>已經(jīng)是最后一個節(jié)點");
}
var z = get_previousSibling(x);
if (z != null) {
document.write("<br />priviousibling: ");
document.write(z.nodeName);
document.write(" = ");
document.write(z.innerHTML);
} else {
document.write("<br>已經(jīng)是第一個節(jié)點");
}
</script>
</body>
</html>
運行結(jié)果：
Paste_Image.png
