JavaScript——t全选(checkbox全选)
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>02.JavaScript——t全选</title>
<style type="text/css" media="screen">
.box{width:120px;height:250px;border:1px solid #000;border-radius:5px;padding:5px 10px;margin:20px auto;}
.box div{border-bottom:1px solid #ccc;padding-bottom:10px;margin-bottom:8px;}
.box input{margin:8px;}
</style>
<script type="text/javascript">
function checkAll(){
var checkall,item;
checkall=document.getElementById('checkall');
item=document.getElementsByName('item[]');
for(var i=0;i<item.length;i++){
if(checkall.checked){
item[i].checked=true;
}else{
item[i].checked=false;
}
}
}
</script>
</head>
<body>
<div class="box">
<div>
<input type="checkbox" id="checkall" onclick="checkAll(this)">
<label for="checkall">全选</label>
</div>
<input type="checkbox" name="item[]">选项1<br>
<input type="checkbox" name="item[]">选项2<br>
<input type="checkbox" name="item[]">选项3<br>
<input type="checkbox" name="item[]">选项4<br>
<input type="checkbox" name="item[]">选项5<br>
<input type="checkbox" name="item[]">选项6<br>
</div>
</body>
</html>
