サマリー：<!DOCTYPE html> <html> <head> <meta charset="UTF-8"> <title>全選</title> <style type="text/css"> .box
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>全選</title>
<style type="text/css">
.box{
width: 120px;
height: 250px;
border:1px solid #ccc;
border-radius: 5px;
padding:5px 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">
//要用駝峰命名
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>
</head>
<body>
<div>
<div>
<input type="checkbox" id="checkall" onclick="checkAll()"><label for="checkall">全選</label>
</div>
<input type="checkbox" name="item[]">選項1<br>
<input type="checkbox" name="item[]">選項2<br>
<input type="checkbox" name="item[]">選項3<br>
<input type="checkbox" name="item[]">選項4<br>
<input type="checkbox" name="item[]">選項5<br>
<input type="checkbox" name="item[]">選項6<br>
</div>
</body>
</html>
添削の先生：滅絕師太添削時間：2019-03-20 09:29:16
先生のまとめ：全選案例后期使用場景較多,要好好掌握哦!