摘要：<!DOCTYPE html> <html> <head> <title>全选</title> <style type="text/css"> .box { width: 120px; height: 300px; border:1
<!DOCTYPE html>
<html>
<head>
<title>全选</title>
<style type="text/css">
.box {
width: 120px;
height: 300px;
border:1px solid #ccc;
border-radius: 5px;
padding: 5px 10px;
margin: 20px auto;
}
.box div {
border-bottom: 1px solid #ccc;
padding-bottom: 10px;
}
.box input {
margin: 8px;
}
button {
float: right;
background-color: #F40;
border: none;
color: #fff;
width: 60px;
height: 30px;
}
</style>
<script type="text/javascript">
function checkall(){
var checkall,item;
checkall = document.getElementById('checkall');//获取全选框
item = document.getElementsByName('item[]')//获取下面的勾选框
for(var i =0;i<item.length;i++){
if(checkall.checked){
item[i].checked = true;
}else {
item[i].checked = false;
}
}
}
</script>
</head>
<body>
<div class="box">
<div>
<input type="checkbox" id="checkall" onclick = "checkall()"><label for="checkall">全选</label>
</div>
<input type="checkbox" name="item[]">红旗<br>
<input type="checkbox" name="item[]">比亚迪<br>
<input type="checkbox" name="item[]">北京现代<br>
<input type="checkbox" name="item[]">雷克萨斯<br>
<input type="checkbox" name="item[]">法拉利<br>
<input type="checkbox" name="item[]">劳斯莱斯<br>
<input type="checkbox" name="item[]">保时捷<br>
<input type="checkbox" name="item[]">玛莎拉蒂<br>
<button>结算</button>
</div>
</body>
</html>
批改老师：天蓬老师批改时间：2018-12-29 09:25:35
老师总结：全选效果实现的不太理想，checkbox在点击的时候通过this可以拿到当前的checkbox对象，不需要再用id选择器再选一遍
