li排序

html

<ul id="ul1">
	<li>9</li>
    <li>2</li>
    <li>7</li>
    <li>4</li>
    <li>11</li>
</ul>

<input type="button" value="排序" id="btn1" />

js代码

window.onload = function(){
	var oUl = document.getElementById("ul1");
	var oBtn = document.getElementById("btn1");

	oBtn.onclick = function(){
		var arr = [];
		for(var i=0; i<oUl.children.length; i++){
			arr.push(oUl.children[i]);
		}

		arr.sort(function(li1,li2){
			var n1 = parseInt(li1.innerHTML);
			var n2 = parseInt(li2.innerHTML);
			return n1-n2;
		});

		for(var i=0; i<arr.length; i++){
			oUl.appendChild(arr[i]);
		}

	}

}

li排序