From the monthly archives: May 2009

Useful HTML Meta Tags

By On 25/05/2009 · Leave a Comment

Tag Name Example(s) Description Author <META NAME=”AUTHOR” CONTENT=”Tex Texin”> The author’s name. cache-control <META HTTP-EQUIV=”CACHE-CONTROL” CONTENT=”NO-CACHE”> HTTP 1.1. Allowed values = PUBLIC | PRIVATE | NO-CACHE | NO-STORE.
Public – may be cached in public shared caches
Private – may only be cached in private cache
no-Cache – may not be cached

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XMLHTTP notes: readyState and the events

By On 22/05/2009 · Leave a Comment

from http://www.quirksmode.org/blog/archives/2005/09/xmlhttp_notes_r_2.html

As we all know an xmlhttp script requires the use of the readystatechange event. In theory, using the load event is also possible, but Explorer doesn’t support it on xmlhttp requests.

Both these events, and the readyState property, have a few odd quirks when used in an xmlhttp environment, though. [...]

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IE page cache problem with AJAX

By On 19/05/2009 · Leave a Comment

Problem:

When doing AJAX call, IE will cache every AJAX call. Hence, url such as ‘/post.do’ will return the same thing and actually the AJAX request will not be sent after the first time.

Solution:

put AJAX url ‘/post.do’ with a time stamp as following:

jQuery.get(‘/post.do?ts=’+(new Date()).getTime());

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Prevent Session Lost When Redirecting in PHP

By On 15/05/2009 · Leave a Comment

<?
session_start();
$_SESSION['mySession'] = “hello”;

header (“Location: xpage.php”);
exit(); //This sentence do the magic
?>

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