abstract：<!DOCTYPE html> <html> <head> <meta charset="utf-8"> <title>全選加反選</title> <link rel="stylesheet" type="text/css&q
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>全選加反選</title>
<link rel="stylesheet" type="text/css" href="">
<style type="text/css">
.box{width: 180px;height: 300px;border: 1px solid #000; margin: 30px auto;text-align: center;}
.box div{width: 120px; border-bottom: 1px solid #000;padding: 10px;margin: 0 auto 20px;}
.box>input{margin: 10px;}
</style>
</head>
<body>
<div class="box">
<div>
<input type="checkbox" id="checkAll" onclick="checkAll()"><label for="checkAll">全選</label>
<input type="button" onclick="checkOut()" value="反選">
</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>
<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;
}
}
}
function checkOut(){
item=document.getElementsByName('item[]');
for(var i=0;i<item.length;i++){
if(item[i].checked){
item[i].checked=false;
}else{
item[i].checked=true;
}
}
}
</script>
</body>
</html>
Correcting teacher：查無(wú)此人Correction time：2019-05-14 09:31:27
Teacher's summary：完成的不錯(cuò)。如果是商城購(gòu)物車，全選還可以把價(jià)格計(jì)算。繼續(xù)加油。