摘要：<!DOCTYPE html><html><head> <title>11.checked全选功能</title> <style type="text/css"> .box{ width: 120px; height: 200px; border: 1px solid #ccc; bord
<!DOCTYPE html>
<html>
<head>
<title>11.checked全选功能</title>
<style type="text/css">
.box{
width: 120px;
height: 200px;
border: 1px solid #ccc;
border-radius: 10px;
margin: 20px auto;
}
.box div{
border-bottom: 1px solid #000;
}
.box input{
margin-top: 10px;
}
</style>
<script type="text/javascript">
function checkall(){
var checkall = document.getElementById('checkall');
var item = document.getElementsByName('item[]');
console.log(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()"><label for="checkall">全选</label>
</div>
<input type="checkbox" name="item[]">项目1<br>
<input type="checkbox" name="item[]">项目2<br>
<input type="checkbox" name="item[]">项目3<br>
<input type="checkbox" name="item[]">项目4<br>
<input type="checkbox" name="item[]">项目5<br>
<input type="checkbox" name="item[]">项目6<br>
</div>
</body>
</html>
批改老师：天蓬老师批改时间：2019-01-27 14:03:06
老师总结：下提提交代码, 记得写注释, 不要这样
