摘要：<!DOCTYPE html><html> <head> <meta charset="utf-8"> <title></title> </head> <body> <script type="text/javascript"> var ch
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title></title>
</head>
<body>
<script type="text/javascript">
var checkall, item;
checkall = document.getElementById('checkall');
item = document.getElementsByName("item[]");
var i = 0;
console.log(item.length);
while (i < item.length) {
i++;
if (checkall.checked) {
item[i].checked = true;
} else {
item[i].checked = false;
}
}
</script>
<div class="box">
<div>
<input type="checkbox" id="checkall">全选
</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>
</div>
</body>
</html>
批改老师：灭绝师太批改时间：2019-01-09 10:13:14
老师总结：你是不是最重要的一步网写了呀 绑定函数 事件调用一下
