abstract：<!DOCTYPE html> <html> <head> <title>javascript学习之全选功能</title> <style type="text/css"> .box{width: 120px; height: 190px;
<!DOCTYPE html>
<html>
<head>
<title>javascript学习之全选功能</title>
<style type="text/css">
.box{width: 120px; height: 190px; border: 1px solid #000; border-radius: 5px; padding: 10px 10px; margin: 20px auto;}
.box div{border-bottom: 1px solid #000; padding-bottom: 5px; margin-bottom: 8px;}
.box input{margin:8px;}
</style>
</head>
<body>
<div class="box">
<div><input type="checkbox" onclick="checkall()" id="checkall" name=""><label for="checkall">全选</label></div>
<input type="checkbox" name="item[]">HTML<br />
<input type="checkbox" name="item[]">CSS<br />
<input type="checkbox" name="item[]">javascript<br />
<input type="checkbox" name="item[]">PHP<br />
<input type="checkbox" name="item[]">ThinkPHP<br />
</div>
<script type="text/javascript">
function checkall(){
var checkall;
var 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>
</body>
</html>
Correcting teacher：查无此人Correction time：2019-05-10 14:17:44
Teacher's summary：完成的不错。如果是商城购物车，全选还可以把价格计算。继续加油。
