摘要：<!DOCTYPE html><html><head> <title></title> <style type="text/css"> .box{width: 120px;height: 250px;border: 1px solid #ccc;border-radius: 5px;padding: 0p
<!DOCTYPE html>
<html>
<head>
<title></title>
<style type="text/css">
.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 type="text/javascript">
function checkall(){
var checkall,item;
checkall=document.getElementById('checkall');
item=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>
<script type="text/javascript">
</script>
</body>
</html>
批改老师：天蓬老师批改时间：2018-12-16 09:01:20
老师总结：利用复选框进行全选操作,name属性值是关键,请用数组形式
