Home > Article > Web Front-end > Detailed example of implementing search toolbar through javascript
1: Final effect
2: Principle
If you search for "China" in Yahoo, Then you will get a string of addresses like this in the browser's address bar: http://search.cn.yahoo.com/search?ei=gbk&fr=fp-tab-web-ycn&meta=vl%
3Dlang_zh-CN%26vl %3Dlang_zh-TW&pid=ysearch&source=ysearch_www_hp_button
&p=%D6%D0%B9%FA&Submit=
It looks a bit confusing, please simplify it: http://search.cn.yahoo.com/search?&p= %D6%D0%B9%FA
This is the key. &p=%D6%D0%B9%FA is the keyword parameter of the search, and %D6%D0%B9%FA is the
of "China" Url encoding. OK, as long as we can construct such encoding.
Three: URL encoding
The encodeURIComponent() function of JavaScript can complete the encoding work.
For example, in the above example, we can use "http://search.cn.yahoo.com/search?&p="+encodeURIComponent("China"); to complete.
Four: Code
(Click the plus sign to expand)
The code is as follows:
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Search.aspx.cs" Inherits="Search" %> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" > <head runat="server"> <title>Search</title> <script language="javascript" type="text/javascript"> // <!CDATA[ function GetEncodeOfKey() { var strKey = window.document.getElementById("Text_Key").value; return encodeURIComponent(strKey); } function GetUrl(site) { var encode=GetEncodeOfKey(); //web if(document.getElementById("RadioButtonList_Kind_0").checked) { if(site=="google") { return "http://www.google.com/search?q="+encode+"&ei=UTF-8"; } else { return "http://search.yahoo.com/search?p="+encode+"&ei=UTF-8"; } } //mp3 else if(document.getElementById("RadioButtonList_Kind_1").checked) { if(site=="google") { return "http://www.google.com/search?q="+encode+" mp3"+"&ei=UTF-8"; } else { return "http://audio.search.yahoo.com/search/audio?&p="+encode+"&ei=UTF-8"; } } //img else if(document.getElementById("RadioButtonList_Kind_2").checked) { if(site=="google") { return "http://images.google.com/images?q="+encode+"&ei=UTF-8"; } else { return "http://images.search.yahoo.com/search/images?p="+encode+"&ei=UTF-8"; } } else { //alert("err"); } } function Button_Google_onclick() { window.open(GetUrl("google")); } function Button_Yahoo_onclick() { window.open(GetUrl("yahoo")); } // ]]> </script> </head> <body> <form id="form1" runat="server"> <p> <br /> <br /> <strong><span style="font-size: 24pt; color: #336633">Search<br /> </span></strong> </p> <hr style="position: relative" /> <br /> <table style="left: 0px; position: relative; top: 0px"> <tr> <td style="width: 31px; height: 21px"> <span style="font-family: Terminal">Key</span></td> <td style="width: 253px; height: 21px"> <input id="Text_Key" style="width: 248px; position: relative" type="text" /></td> <td style="width: 175px; height: 21px"> <asp:RadioButtonList ID="RadioButtonList_Kind" runat="server" RepeatDirection="Horizontal" Style="position: relative" Font-Names="terminal"> <asp:ListItem Selected="True">Web</asp:ListItem> <asp:ListItem>Mp3</asp:ListItem> <asp:ListItem>Image</asp:ListItem> </asp:RadioButtonList></td> </tr> <tr> <td style="width: 31px"> </td> <td colspan="2"> <input id="Button_Google" style="width: 80px; position: relative" type="button" value="Google" onclick="return Button_Google_onclick()" /> <input id="Button_Yahoo" style="left: -29px; width: 104px; position: relative" type="button" value="Yahoo!" onclick="return Button_Yahoo_onclick()" /></td> </table> <br /> <hr style="position: relative" /> <asp:HyperLink ID="HyperLink_Home" runat="server" NavigateUrl="~/Default.aspx" Style="position: relative">Home</asp:HyperLink></form> </body> </html>
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