<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<meta http-equiv="Content-Language" content="utf-8" />
<title>ID排序</title>
<script>
window.onload=function(){
var oTab=document.getElementById('tab1');
var oBtn=document.getElementById('btn1');
oBtn.onclick=function(){
var arr=[];
for(var i=0;i<oTab.tBodies[0].rows.length;i++){
arr[i]=oTab.tBodies[0].rows[i];
}
arr.sort(function(tr1,tr2){
//tr1中的第一个单元格转化为数比较
var n1=parseInt(tr1.cells[0].innerHTML);
var n2=parseInt(tr2.cells[0].innerHTML);
return n1-n2;
});
//tr重新插入
for(var i=0;i<arr.length;i++){
oTab.tBodies[0].appendChild(arr[i]);
};
};
}
</script>
</head>
<body>
<input id="btn1" type="button" value="排序"/>
<table id="tab1" border="1" width="500">
<thead>
<td>ID</td>
<td>姓名</td>
<td>年龄</td>
</thead>
<tbody>
<tr>
<td>1</td>
<td>张三</td>
<td></td>
</tr>
<tr>
<td>2</td>
<td>李四</td>
<td></td>
</tr>
<tr>
<td>3</td>
<td>王五</td>
<td></td>
</tr>
<tr>
<td>5</td>
<td>王五</td>
<td></td>
</tr>
<tr>
<td>4</td>
<td>钱六</td>
<td></td>
</tr>
</tbody>
</table>
</body>
</html>