代码：
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title></title>
</head>
<body>
<script type="text/javascript">
var data={
"total":4,
"emps":[
{"empno":1,"ename":"Smith","sal":1500},
{"empno":2,"ename":"Jack","sal":900},
{"empno":3,"ename":"Bob","sal":1000},
{"empno":4,"ename":"Rose","sal":1200},
]
};
//把数据展示到table中
window.onload=function(){
var displayBtnElt=document.getElementById("displayBtn");
displayBtnElt.onclick=function(){
var html="";
var emps=data.emps;
for(var i=0;i<emps.length;i++){
var emp=emps[i];
html+="<tr>";
html+="<td>"+emp.empno+"</td>";
html+="<td>"+emp.ename+"</td>";
html+="<td>"+emp.sal+"</td>";
html+="</tr>";
}
var tbodyElt=document.getElementById("empTbody");
tbodyElt.innerHTML=html;
var spanElt=document.getElementById("countSpan");
spanElt.innerText=emps.length;
}
}
</script>
<input type="button" value="显示员工信息" id="displayBtn">
<h2>员工信息列表</h>
<table border="1px" width="50%">
<tr>
<th>员工编号</th>
<th>员工姓名</th>
<th>员工薪资</th>
</tr>
<tbody id="empTbody">
</tbody>
</table>
信息总数：<span id="countSpan"></span>
</body>
</html>