abstrak：<!DOCTYPE html><html><head><meta charset="utf-8"> <style type="text/css">.box{width:70px;height:150px;background:green;margin:50px auto;padding-
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<style type="text/css">
.box{width:70px;height:150px;background:green;margin:50px auto;padding-top:10px;padding-left:15px;border-radius:30px 0px 30px 0px;border:5px solid #000;}
.box div{border-bottom:3px solid #ccc;margin:5px auto;padding-bottom:5px;}
.box input{margin:2px;}
</style>
<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=ture;
}else{
item[i].checked=false;
}
}
}
</script>
<title>這是我的選項作業(yè)</title>
</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[]">英語<br/>
<input type="checkbox" name="item[]">語文<br/>
<input type="checkbox" name="item[]">數(shù)學(xué)<br/>
<input type="checkbox" name="item[]">物理<br/>
<input type="checkbox" name="item[]">化學(xué)<br/>
</div>
</body>
</html>
Guru membetulkan：滅絕師太Masa pembetulan：2019-03-18 09:36:15
Rumusan guru：true你寫成了ture 一個單詞的誤差,粗心!