jquery的end()，addBack()方法example

 1 <!DOCTYPE html>
 2 <html lang="en">
 3 <head>
 4     <meta charset="UTF-8">
 5     <title>end</title>
 6     <script type="text/javascript" src="jquery-1.11.3.min.js"></script>
 7 </head>
 8 <body>
 9 <div><a></a></div>
10 <div><p></p></div>
11 <script type="text/javascript">
12     $(document).ready(function(){
13 
14         //end()方法是回到前一次操作的状态
15         $("div:first").find("a").css({"width":"100px","height":"200px","background":"red","display":"block"}).end()
16                 .css({"border":"1px solid red","width":"150px","height":"250px"});
17 
18 
19         //addBack()返回当前结果集和上一个结果集jquery 1.9,2.0
20         //$("div").children("p").addBack().css("border","10px solid blue");
21 
22         //andSele()方法是jquery 1,9之前的方法，同样是返回当前和上一个结果集
23         $("div:odd").children("p").andSelf().css({"border":"10px solid blue","width":"100px","height":"100px"});
24     });
25 </script>
26 </body>
27 </html>
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