abstract：<!DOCTYPE html><html lang="en"><head> <meta charset="UTF-8"> <title>测试</title> <style>
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>测试</title>
<style>
#box{
width:100px;
border:1px solid #333;
border-radius:6px;
padding:10px 8px;
margin:200px auto;
}
#box div{
border-bottom:1px solid #333;
padding-bottom:8px;
margin-bottom:8px;
}
input{
margin:8px;
}
</style>
<script>
function totalcheck(){
var checkall = document.getElementById('checkall');
var item = document.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 id="box">
<div>
<input type="checkbox" id="checkall" onclick="totalcheck()"><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>
Correcting teacher：查无此人Correction time：2019-03-25 09:29:11
Teacher's summary：完成的不错。js操作可以让页面动起来，你现在应该越学越开心。继续加油