JQuery学习(选择器-基本-*)

 1 <%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
 2 <%
 3     String path = request.getContextPath();
 4     String basePath = request.getScheme() + "://"
 5             + request.getServerName() + ":" + request.getServerPort()
 6             + path + "/";
 7 %>
 8
 9 <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
10 <html>
11 <head>
12 <base href="<%=basePath%>">
13
14 <title>My JSP ‘jquery.jsp‘ starting page</title>
15
16 <meta http-equiv="pragma" content="no-cache">
17 <meta http-equiv="cache-control" content="no-cache">
18 <meta http-equiv="expires" content="0">
19 <meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
20 <meta http-equiv="description" content="This is my page">
21 <script type="text/javascript" src="/common/easyui/jquery.min.js"></script>
22 <script type="text/javascript">
23     $(document).ready(function(){
24     $("*").css("color","red");
25     });
26
27 </script>
28
29 </head>
30 <body>
31 <form>
32   <div>DIV</div>
33 <span>SPAN</span>
34 <p>P</p>
35 </form>
36 </body>
37 </html>

　　　　　　运行效果图1-1

重点解释：

$("*")：找到每一个元素注释：JQueryAPI中类似的还有

class:根据给定的类匹配元素$(".myClass")：查找所有myClass类

element:根据元素名匹配元素$("div")：查找所有div元素

id:根据指定的ID匹配一个元素$("#myDiv")：查找名字为myDiv的元素

select1,select2,selectN:将每一个选择器匹配到的元素合并后一起返回。$("div,span,p.myclass"):返回div元素，span元素和名字为myclass的p元素