jQuery(5)--实现checkbox的全选,反选，全不选功能
页面如下：
源码：
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"><html> <head> <title>demo04.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">--> <script type="text/javascript" src="../js/jquery-1.9.1.js"></script> <script type="text/javascript"> $(document).ready(function(){ $("#ckbAll").click(function(){ $("input[name='fav']").attr("checked",true); }); $("#ckbno").click(function(){ $("input[name='fav']").attr("checked",false); }); $("#ckbrec").click(function(){ $("input[name='fav']").each(function(){ // $(this).attr("checked",!$(this).attr("checked")); this.checked=!this.checked;//用的是Dom的属性 }); }); });</script> </head> <body> <div> <input type="checkbox" name="fav" value="看书1" checked="checked"/>看书1 <input type="checkbox" name="fav" value="看书2" checked="checked"/>看书2 <input type="checkbox" name="fav" value="看书3" checked="checked"/>看书3 <input type="checkbox" name="fav" value="看书4" checked="checked"/>看书4 </div> <div> <input type="button" id="ckbAll" value="全选"/><br/><br/> <input type="button" id="ckbno" value="全不选"/><br/><br/> <input type="button" id="ckbrec" value="反选"/><br/> </div> </body></html>