复选框全选与全不选操作实现思路

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我是靠谱客的博主心灵美路灯，最近开发中收集的这篇文章主要介绍复选框全选与全不选操作实现思路，觉得挺不错的，现在分享给大家，希望可以做个参考。

概述

复制代码代码如下:

 
<SPAN style="FONT-SIZE: 14px"><!DOCTYPE html> 
<html> 
<head> 
<title>复选框处理.html</title> 
<meta http-equiv="keywords" content="keyword1,keyword2,keyword3"> 
<meta http-equiv="description" content="this is my page"> 
<meta http-equiv="content-type" content="text/html; charset=UTF-8"> 
<!--<link rel="stylesheet" type="text/css" href="./styles.css">--> 
</head> 
<body> 
<input type="checkbox" id="checkItem">全选/全不选 
<br> 
<h3>爱好</h3> 
<input type="checkbox" name="item">看书 
<br> 
<input type="checkbox" name="item">听音乐 
<br> 
<input type="checkbox" name="item">打球 
<br> 
<input type="checkbox" name="item">散步 
<br> 
<input type="checkbox" name="item">写代码 
<br> 
<script> 
window.onload = function(){ 
var checkItem = document.getElementById("checkItem").onclick = function(){ 
var itemsElement = document.getElementsByName("item"); 
for (var i = 0; i < itemsElement.length; i++) { 
var itemElement = itemsElement[i]; 
if (this.checked) { 
itemElement.checked = "checked"; 
} 
else { 
itemElement.checked = null; 
} 
} 
} 
} 
</script> 
</body> 
</html> 
</SPAN> 