abstract：<!DOCTYPE html><html lang="en"><head><meta charset="UTF-8"><title>JS實(shí)現(xiàn)全選</title><style type="text/css"> &
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>JS實(shí)現(xiàn)全選</title>
<style type="text/css">
.box{width: 200px;height: 200px;padding: 5px 10px;margin: 20px auto;}
.box div{border-bottom: 1px solid pink;}
.box input{margin: 8px;}
</style>
<script type="text/javascript">
function Getall(){
var GetAll,Item;
GetAll = document.getElementById('checkall')
Item = document.getElementsByName('item[]')
for (var i=0;i<Item.length;i++ ){
if(GetAll.checked){
Item[i].checked=true
}else{
Item[i].checked=false
}
}
}
</script>
</head>
<body>
<div class="box">
<div> <input type="checkbox" id="checkall" onclick="Getall()"><label for="checkall">全選</label>
</div>
<input type="checkbox" name="item[]">選項(xiàng)1<br>
<input type="checkbox" name="item[]">選項(xiàng)2<br>
<input type="checkbox" name="item[]">選項(xiàng)3<br>
</div>
</body>
</html>
Correcting teacher：天蓬老師Correction time：2019-02-15 16:15:24
Teacher's summary：name="item[]", 這個(gè)值是給php用的, 如果僅僅是前端用, 可以不用這個(gè)名稱, 其實(shí)這個(gè)變量中可以有索引,
name="item['key'], 也是可以的, 這樣更直觀,且與順序無(wú)關(guān)了