Instance code: js obtains url parameters to change the Website access address

Recently, a friend has been asking questions about css and JS when revising a website. Today, this friend asked me again about the link to the revised website, because the original website URLs are directly linked, and cannot be accessed after the revision, this will cause a loss to the website and a lot of traffic will disappear. If you use JS to turn around, how nice it is! This idea is good, so I told my friends that I needed an html page to pass parameters, so I used JavaScript code to get url parameters, retrieve the url parameter of a js and change the Website access address funciton to an instance:

　　URL type after redirection:Http://www.bkjia.com/url.htm? Url = http://www.liehuo.org

　　JS Code:

<Script language = "javascript" type = "text/javascript"> // Js obtains the function of the url parameter Function request (paras ){ Var url = location. href; Var paraString = url. substring (url. indexOf ("? ") + 1, url. length). split ("&"); Var paraObj = {} For (I = 0; j = paraString [I]; I ++ ){ ParaObj [j. substring (0, j. indexOf ("="). toLowerCase ()] = j. substring (j. indexOf ("=") + 1, j. length ); } Var returnValue = paraObj [paras. toLowerCase ()]; If (typeof (returnValue) = "undefined "){ Return ""; } Else { Return returnValue; } } Var theurl Theurl = request ("url "); If (theurl! = ''){ Location = theurl } </Script>