Javascript Redirect

To redirect using Javascript:

location.replace("http://google.com");

-We use Javascript's built-in location object.
-We use Javascript's built-in replace method.
-In quotation marks and parenthesis, we type the URL we want to load in the browser.


You may have seen different Javascript redirects like:

window.location.href="http://google.com";
or
window.location="http://google.com";

The advantage our first example (location.replace) is that users can still back up in their browser*. The latter two examples break the back button on Windows IE. Users cannot leave the page by clicking it. Many search engines don't like this behaviour.

Another consideration is that search engines may not like a javascript redirect no matter how we do it. Here's a simple perl solution:

#!/usr/bin/perl

print "Location: http://google.com\n\n";

iLoveTheCode Perl Redirect Article.


*The technical reason location.replace doesn't break the back button is because the in-between page doesn't get written to the browser's History, therefore, a click back skips the redirecting page. The other two redirect options DO write to the browser's History.


Free Copy and Paste Javascript Code:

<script type="text/javascript">
<!--

location.replace("http://google.com");
//window.location.href="http://google.com"; Commented out //
//window.location="http://google.com"; Commented out //

-->
</script>


Resources:
A nice offsite Redirect tutorial
Sun Documentation of LOCATION object

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