JS案例篇-全选
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>JS案例篇-全选</title>
<style>
.box {width:120px; height: 250px;border: 1px solid #ccc; border-radius: 5px;padding: 0px 10px;margin: 20px auto;}
.box div {border-bottom: 1px solid #ccc;padding-bottom: 10px;margin-bottom: 8px;}
.box input {margin: 8px;}
</style>
<script>
function checkAll() {
var checkall,item;
checkall=document.getElementById('checkall') //获取全选按钮
item=document.getElementsByName("item[]") //获取下面的选项框
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
</div>
</body>
</html>