摘要:有類選擇器,id選擇器,標(biāo)簽選擇器,子類選擇器,父類選擇器等 <style type="text/css"> .box{width: 120px;height: 250px;border: 1px solid #000;b
有類選擇器,id選擇器,標(biāo)簽選擇器,子類選擇器,父類選擇器等
<style type="text/css">
.box{width: 120px;height: 250px;border: 1px solid #000;border-radius: 5px;padding: 5px 10px;margin: 20px auto;}
.box div{border-bottom: 1px solid #000;padding-bottom: 10px;margin-bottom: 8px;}
.box input{margin: 8px;}
</style>
<html>
<head>
<meta charset="utf-8">
</head>
<body>
<div class="box">
<div>
<input type="checkbox" id="checkall" onclick="checkAll()"><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>
<input type="checkbox" name="item[]">選項(xiàng)4<br>
<input type="checkbox" name="item[]">選項(xiàng)5<br>
<input type="checkbox" name="item[]">選項(xiàng)6<br>
</div>
</body>
</html>
<script type="text/javascript">
function checkAll(){
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>
批改老師:西門大官人批改時間:2019-04-27 17:38:42
老師總結(jié):最好每個案例都寫個案例,當(dāng)前選擇元素僅用了id 和 name