abstract：<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>全选</title>
<style>
.box{width:120px;height:250px;border: 1px solid&n
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>全选</title>
<style>
.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}
.box input {margin: 8px;}
</style>
<script type="text/javascript">
function checkAll(){
var checkall,item;
checkall = document.getElementById("checkall");//获取全选框
item = document.getElementsByName("item[]") //获取下面的勾选框
for(var i=0;i<item.length;i++){
if(checkall.checked){
item[i].checked = true;
}else{
item[i].checked = false;
}
}
}
</script>
</head>
<body>
<div>
<div>
<input type="checkbox" id="checkall" onclick="checkAll()"/> <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>
