<html>
<head>
<title> New Document </title>
<meta name="Generator" content="EditPlus">
<meta name="Author" content="">
<meta name="Keywords" content="">
<meta name="Description" content="">
<style type="text/css">
table, tr, td, caption{
border:1px solid #666
border-collapse:collapse
background-color:rgb(210, 219, 236)
}
td, caption{
font-family:'微软雅黑'
font-size:12px
text-align:center
padding:3px 15px
}
caption{
border-bottom:none
cursor:pointer
}
</style>
<script type="text/javascript">
window.onload = function(){
var tab = document.getElementsByTagName('table')[0]
tab.caption.onclick = function(){
var trs = tab.rows
for(var i = 0, len = trs.length i < len i++){
var cell = trs[i].cells[1]
if(cell.style.display == 'none'){
cell.style.display = ''
}else{
cell.style.display = 'none'
}
}
}
}
</script>
</head>
<body>
<table>
<caption>显示/隐藏价格</caption>
<tr>
<td>产品</td>
<td>价格</td>
<td>销量</td>
</tr>
<tr>
<td>A</td>
<td>88元</td>
<td>2</td>
</tr>
<tr>
<td>B</td>
<td>77元</td>
<td>3</td>
</tr>
<tr>
<td>C</td>
<td>66元</td>
<td>4</td>
</tr>
</table>
</body>
</html>
$("table tr").each(function(i){
console.log(i)
})
----根据行数自动循环显示隐藏
