추상적인：<!DOCTYPE html> <html> <head> <meta charset="UTF-8"> <title>Javascript全选</title> <style type="text/css"> .box{width:120px;h
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Javascript全选</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 #000;padding-bottom:10px;margin-bottom:8px;}
.box input{margin:8px;}
</style>
</head>
<body>
<div>
<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">
function checkall(){
var checkall,item;
checkall=document.getElementById('checkall');
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>
</body>
</html>
교정 선생님：查无此人교정 시간：2019-07-27 11:21:46
선생님의 요약：完成的不错。如果是商城的购物车，全选还要统计商品总价。继续加油。