用JavaScript打造搜索工具栏

(转)用JavaScript打造搜索工具栏

一:最终效果

二:原理

如果你在Yahoo中搜索“中国”，那么在浏览器的地址栏将得到这样一串地址：http://search.cn.yahoo.com/searc ... eb-ycn&meta=vl%
3Dlang_zh-CN%26vl%3Dlang_zh-TW&pid=ysearch&source=ysearch_www_hp_button
&p=%D6%D0%B9%FA&Submit=
看上去有些乱了，简化一下：http://search.cn.yahoo.com/search?&p=%D6%D0%B9%FA
这就是关键.其中&p=%D6%D0%B9%FA是搜索的关键字参数，而%D6%D0%B9%FA是“中国”的
Url编码。OK，我们只要能构造出这样的编码就好了。

三：URL编码
JavaScript的encodeURIComponent()函数可以完成编码工作。
比如上面的例子我们可以用“http://search.cn.yahoo.com/search?&p=”＋encodeURIComponent(“中国”)；来完成。

四：代码
(点击加号展开）

  1 <%@ Page Language="C#" AutoEventWireup="true" CodeFile="Search.aspx.cs" Inherits="Search" %>
  2
  3 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
  4
  5 <html xmlns="http://www.w3.org/1999/xhtml" >
  6 <head runat="server">
  7    <title>Search</title>
  8 <script language="javascript" type="text/javascript">
  9 // <!CDATA[
10
11 function GetEncodeOfKey()
12 {
13    var strKey = window.document.getElementById("Text_Key").value;
14    return  encodeURIComponent(strKey);
15 }
16
17 function GetUrl(site)
18 {
19    var encode=GetEncodeOfKey();
20
21    //web
22    if(document.getElementById("RadioButtonList_Kind_0").checked)
23    {
24       if(site=="google")
25       {
26          return "http://www.google.com/search?q="+encode+"&ei=UTF-8";
27       }
28       else
29       {
30          return "http://search.yahoo.com/search?p="+encode+"&ei=UTF-8";
31       }
32    }
33    //mp3
34    else if(document.getElementById("RadioButtonList_Kind_1").checked)
35    {
36       if(site=="google")
37       {
38          return "http://www.google.com/search?q="+encode+" mp3"+"&ei=UTF-8";
39       }
40       else
41       {
42          return "http://audio.search.yahoo.com/search/audio?&p="+encode+"&ei=UTF-8";
43
44       }
45    }
46    //img
47    else if(document.getElementById("RadioButtonList_Kind_2").checked)
48    {
49       if(site=="google")
50       {
51          return "http://images.google.com/images?q="+encode+"&ei=UTF-8";
52       }
53       else
54       {
55          return "http://images.search.yahoo.com/search/images?p="+encode+"&ei=UTF-8";
56       }
57    }
58    else
59    {
60       //alert("err");
61    }
62
63
64 }
65
66 function Button_Google_onclick()
67 {
68    window.open(GetUrl("google"));
69 }
70
71 function Button_Yahoo_onclick()
72 {
73    window.open(GetUrl("yahoo"));
74 }
75
76 // ]]>
77 </script>
78 </head>
79 <body>
80    <form id="form1" runat="server">
81    <div>
82       <br />
83       <br />
84       <strong><span style="font-size: 24pt; color: #336633">Search<br />
85       </span></strong>
86    </div>
87    <hr style="position: relative" />
88       <br />
89       <table style="left: 0px; position: relative; top: 0px">
90          <tr>
91                <td style="width: 31px; height: 21px">
92                   <span style="font-family: Terminal">Key</span></td>
93                <td style="width: 253px; height: 21px">
94                   <input id="Text_Key" style="width: 248px; position: relative" type="text" /></td>
95                <td style="width: 175px; height: 21px">
96                   <asp:RadioButtonList ID="RadioButtonList_Kind" runat="server" RepeatDirection="Horizontal"
97                      Style="position: relative" Font-Names="terminal">
98                      <asp

istItem Selected="True">Web</asp

istItem>
99 <asp

istItem>Mp3</asp:ListItem>
100                      <asp:ListItem>Image</asp:ListItem>
101                   </asp:RadioButtonList></td>
102          </tr>
103          <tr>
104                <td style="width: 31px">
105                </td>
106                <td colspan="2">
107                   <input id="Button_Google" style="width: 80px; position: relative" type="button" value="Google" onclick="return Button_Google_onclick()" />
108
109                   <input id="Button_Yahoo" style="left: -29px; width: 104px; position: relative" type="button"
110                      value="Yahoo!" onclick="return Button_Yahoo_onclick()" /></td>
111          </tr>
112       </table>
113       <br />
114       <hr style="position: relative" />
115       <asp:HyperLink ID="HyperLink_Home" runat="server" NavigateUrl="~/Default.aspx" Style="position: relative">Home</asp:HyperLink></form>
116 </body>
117 </html>
118

http://www.prdlife.com/bbs/viewthread.php?tid=442&extra=page%3D1

posted on 2007-02-25 15:08 mbskys 阅读(223) 评论(0) 收藏举报