Fixing the Permission denied to get property XULElement.selectedIndex error

茶男 — Fri, 07 Aug 2009 05:23:19 +0000

from http://www.seopher.com/articles/fixing_the_permission_denied_to_get_property_xulelement_selectedindex_error

If you’re ever doing some AJAX stuff with a text-box input it’s possible that your Firebug will throw a very unusual error:

Error: [Exception… “‘Permission denied to get property XULElement.selectedIndex’ when calling method:

The problem lies in Firefox specifically and it’s autocomplete functionality. To fix it all you need to do is [...]

Useful HTML Meta Tags

茶男 — Mon, 25 May 2009 01:17:40 +0000

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

XMLHTTP notes: readyState and the events

茶男 — Fri, 22 May 2009 08:28:00 +0000

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. These [...]

IE page cache problem with AJAX

茶男 — Tue, 19 May 2009 05:30:27 +0000

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());

5 Tips To Reduce Firefox Memory and Cache Usage

茶男 — Thu, 26 Feb 2009 04:43:59 +0000

from http://www.davidtan.org/tips-reduce-firefox-memory-cache-usage/

Sometimes I just feel that Firefox is such a memory hog. Once I start to open up a few extra tabs, it starts to slow down my whole system. Fortunately, you can do something about it. Here are simple tips and tricks [...]

Table Border Issue in both IE and Firefox

茶男 — Thu, 04 Dec 2008 16:48:13 +0000

Just discover that when coding the following into style sheet:

table { border-collapse: collapse; } th, td { position: relative; border: 1px solid #eee; }

In Firefox 3, top and right borders of each table cell will disappear.

In IE 7, borders could not collapse.

Don’t know why this happened, need to do a little [...]

Fix for PNG issue in IE6

茶男 — Tue, 18 Nov 2008 04:56:22 +0000

Well known issus that IE6 can not display transparency for PNG picture. But now here comes the IFixPNG from http://jquery.khurshid.com/ifixpng.php. It’s really a perfect fix for this issue…

‘This Page Contains Both Secure and Non-Secure Items’ Error Message

茶男 — Fri, 03 Oct 2008 08:10:54 +0000

Generally, it is caused by the following situations:

img, iframe, and frame with src attribute which is blank or non found items. any request from non-secure (non https) source. any usage of ‘about:’ such as about:blank

Trouble shooting:

examine any src attribute of img, iframe and frame carefully

Solution:

change src attribute to ‘javascript:false;’ or [...]

Gears in Firefox

茶男 — Fri, 19 Sep 2008 14:05:33 +0000

Just a note of gears in Firefox which will help a great deal in facilitating your web development.

Firebug: very handy extension which will help in figuring out the CSS and Javascript bugs.

YSlow: Y(Why) slow? It’s a really a good name which will clearly identify the performance problems in your web page. [...]

About protocol links

茶男 — Fri, 19 Sep 2008 12:50:16 +0000

From http://kb.mozillazine.org/About_protocol_links

There are a few special URLs, which begin with about:, that you can type into the Location Bar. (In Thunderbird, which has no Location Bar, or in SeaMonkey, you can also use them as “Mail Start Page”.)

about: — The same page as “Help -> About”. about:about — Lists all these about: [...]

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