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java script全选反选的实现

2015-10-30 14:35 381 查看
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
"http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
<script type="text/javascript">

/* 用于全选和全不选 */
function selectInterest(selectType,type){
//得到到所有的复选 框
var interest = document.getElementsByName("interest");
for(var i = 0 ; i < interest.length; i++){
if(type == 0)
interest[i].checked = selectType;
else
interest[i].checked = !interest[i].checked;
}
}

</script>
<title>无标题文档</title>
</head>

<body>
<form>
<p>爱 好:<input type="checkbox" name="interest" value="sports">运动 
<input type="checkbox" name="interest" value="talk">聊天 
<input type="checkbox" name="interest" value="playgames">玩游戏 </p>
<input type="button" value="全选" onClick="selectInterest(true,0)">
<input type="button" value="全不选" onClick="selectInterest(false,0)">
<input type="button" value="反选" onClick="selectInterest(false,1)">
</form>
</body>
</html>
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