JavaScript菜单项热点排序的实现示例，列表项或菜单项排序，按被点击次数排序（也可以是其他事件），这里只是一个示例而已，如果您想看到更完整的例子，可以在此基础上开发。
演示代码：
<div><ul id="menu"><li><span>First</span></li><li><span>Second</span></li><li><span>Third</span></li></ul><p id="status"></p><script>// 这种排序方法是一种默认模式// 默认初始情况有两种：// 第一种：level值未设定，默认取0；// 第二种：level值已给定，并且列表// 已经按照从大到小（从上到下）排列好了。// 所以，与上（前）面的元素比较即可。var sortIt = function _(elt) {var pes = elt.previousElementSibling;if (pes && elt.level > pes.level) {var ihtml = elt.innerHTML,ilevel = elt.level;elt.innerHTML = pes.innerHTML;elt.level = pes.level;pes.innerHTML = ihtml;pes.level = ilevel;_(pes);}};// RBI：打点// 这里level值为单击(onclick事件)的次数，// 而rank默认为排序号（从0开始）。// 单击次数越多（level值越大），rank越靠前。function rbiIt(elts) {var i;for (i = 0; i < elts.length; i += 1) {elts[i].onclick = function (i) {var level = elts[i].level || 0,rank = elts[i].rank || i;return function (e) {this.level = ++level;this.rank = rank;sortIt(this);document.getElementById("status").innerHTML = "(" + this.rank + " : " + this.level + ")";};}(i);}};// 初始化// 可以自己给定level和rank值var elts = document.getElementById("menu").children;// var elts = document.getElementsByTagName("li");var k;for (k = 0; 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