<html>
<head>
<meta charset=" utf-8">
<meta name="author" content="http://hovertree.com/" />
<title>JS实现复选框的全选和取消全选 - 何问起</title><base target="_blank" />
<style type="text/css">
li {
list-style-type: none;
font-size: 12px;
color: blue;
width: 300px;
height: 20px;
line-height: 20px;
}
a {
width: 200px;
height: 20px;
float: left;
}
.ck {
float: left;
width: 26px;
}
.time {
color: red;
width: 60px;
height: 20px;
float: right;
}
.dohovertree {
font-size: 12px;
}
</style>
<script type="text/javascript">
window.onload=function()
{
var checkboxs=document.getElementsByName("myHove"+"rTreechk");
var hvtck=document.getElementById("hvtck");
cklen=checkboxs.length;
hvtck.onclick=function()
{
if(this.checked==true)
{
for(var i=0;i<cklen;i++)
{
checkboxs[i].checked=true;
}
document.getElementById("dohovert"+"ree").innerHTML="取消"
}
else
{
for(var i=0;i<cklen;i++)
{
checkboxs[i].checked=false;
}
document.getElementById("dohovertree").innerHTML="全选"
}
}
}
</script>
</head>
<body>
<h3>JS实现复选框的全选和取消全选 何问起</h3>
<div style="width:736px">
<a href="http://hovertree.com">首页</a> <a href="http://hovertree.com/texiao/">更多特效</a> <a href="http://hovertree.com/hvtart/bjae/91eqf5ge.htm">原文</a>
</div>
<div>
<ul>
<li>
<span class="ck"><input type="checkbox" name="myHoverTreechk" /></span>
<a href="http://hovertree.com/">何问起欢迎您</a>
<span class="time">2014-12-13</span>
</li>
<li>
<span class="ck"><input type="checkbox" name="myHoverTreechk" /></span>
<a href="http://hovertree.com/hvtart/bjae/91eqf5ge.htm">大家好,好久不见了</a>
<span class="time">2015-12-03</span>
</li>
<li>
<span class="ck"><input type="checkbox" name="myHoverTreechk" /></span>
<a href="http://hovertree.com/menu/javascript/">何问起JS</a>
<span class="time">2015-11-13</span>
</li>
</ul>
<div>
<input type="checkbox" id="hvtck" />
<span class="dohovertree" id="dohovertree">全选</span>
</div>
</div>
</body>
</html>
var checkboxs=document.getElementsByName("myHove"+"rTreechk");
var hvtck=document.getElementById("hvtck");
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