Code: UrlBuilder class in JavaScript-白红宇

/***********************************************************

UrlBuilder Class created by JavaScript

Author: lizhi[at]hit.edu.cn

Version: 1.0

Created: 2006.02.21 22:05

Updated: N/A

History:

1. The first version of code created in 2006.02.21

***********************************************************/

function UrlBuilder(url)

{

this.m_Href = null;

this.m_Host = null;

this.m_Hostname = null;

this.m_Port = null;

this.m_Protocol = null;

this.m_Path = null;

this.m_Search = null;

this.m_Hash = null;

this.m_Params = null;

this.m_Sucess = false;

if ( url ) this.Parse(url);

this.toString = function()

{

return '[class UrlBuilder]';

};

}

UrlBuilder.prototype.Parse = function(url)

{

var m = url.match(/(\w{3,5}:)\/\/([^\.]+(?:\.[^\.:/]+)+)(?::(\d{1,5}))?\/?/);

if ( m )

{

this.m_Protocol = m[1];

this.m_Hostname = m[2];

this.m_Port = m[3];

if ( this.m_Port )

{

this.m_Host = this.m_Hostname + ':' + this.m_Port;

}

else

{

this.m_Host = m[2];

}

var indexHash = url.indexOf('#');

if ( indexHash != -1 )

{

this.m_Hash = url.substr(indexHash);

}

else

{

this.m_Hash = '';

}

var indexParams = url.indexOf('?');

if ( indexParams != -1 )

{

if ( indexHash != -1 )

{

this.m_Search = url.substring(indexParams, indexHash);

}

else

{

this.m_Search = url.substr(indexParams);

}

this.m_Path = url.substr(indexParams);

}

else

{

this.m_Search = '';

}

this.m_Success = true;

this.m_Params = null;

this.m_Href = url;

}

};

UrlBuilder.prototype.GetValue = function(key, encoding)

{

if ( !this.m_Params )

{

if ( this.m_Search )

{

this.m_Params =

{};

var search = this.m_Search.substring(1);

var keyValues = search.split('&');

for ( var i=0 ; i < keyValues.length ; ++i )

{

var keyValue = keyValues[i];

var index = keyValue.indexOf('=');

if ( index != -1 )

{

this.m_Params[keyValue.substring(0, index)] = keyValue.substr(index+1);

}

else

{

this.m_Params[keyValue] = '';

}

encoding = encoding || '';

switch(encoding.toUpperCase())

{

case 'UTF8' :

{

return decodeURI(this.m_Params[key]);

}

case 'UNICODE' :

{

return unescape(this.m_Params[key]);

}

case 'GB2312' : // need VBScript function Chr()

default :

{

return this.m_Params[key];

}

Test Case:

script

language

="javascript"

function TestUrlBuilder()

{

var url =

new UrlBuilder('http:

birdshome.cnblogs.com:8080/index.aspx?hl=zh-CN&newwindow=1&q=#abc');

url.GetValue('');

var strParams = '';

for (

var key

in url.m_Params )

{

strParams += key + ' = ' + decodeURI(url.m_Params[key]) + '\r\n';

}

alert('m_Href\t = \t' + url.m_Href

+ '\r\nm_Host\t = \t' + url.m_Host

+ '\r\nm_Hostname\t = \t' + url.m_Hostname

+ '\r\nm_Port\t = \t' + url.m_Port

+ '\r\nm_Protocol = \t' + url.m_Protocol

+ '\r\nm_Path\t = \t' + url.m_Path

+ '\r\nm_Search\t = \t' + url.m_Search

+ '\r\nm_Hash\t = \t' + url.m_Hash

+ '\r\n\r\n' + strParams);

}

script

Result:

m_Href = http://birdshome.cnblogs.com:8080/index.aspx?hl=zh-CN

&newwindow=1

&q=#abc

m_Host = birdshome.cnblogs.com:8080

m_Hostname = birdshome.cnblogs.com

m_Port = 8080

m_Protocol = http:

m_Path = ?hl=zh-CN

&newwindow=1

&q=#abc

m_Search = ?hl=zh-CN

&newwindow=1

&q=

m_Hash = #abc

hl = zh-CN

newwindow = 1

q =

Shortage:

正则表达式：/(\w{3,5}:)\/\/([^\.]+(?:\.[^\.:/]+)+)(?::(\d{1,5}))?\/?/ 不能处理带有用户名和密码的url，同时也不能处理Int32格式的IP地址(如: )，本来支持也容易，但是这两种url的使用频率实在太少了。

本文转自博客园鸟食轩的博客，原文链接：http://www.cnblogs.com/birdshome/，如需转载请自行联系原博主。