Hey,
How do the big sites refresh every time you go to them, i know there is a meta tag
<META HTTP-EQUIV="Pragma" CONTENT="no-cache">,
but the sites i've looked at don't even have this in there code?
anyone know?
cheers
chuck
Member
Hey,
How do the big sites refresh every time you go to them, i know there is a meta tag
<META HTTP-EQUIV="Pragma" CONTENT="no-cache">,
but the sites i've looked at don't even have this in there code?
anyone know?
cheers
chuck
Member
Hey,
How do the big sites refresh every time you go to them, i know there is a meta tag
<META HTTP-EQUIV="Pragma" CONTENT="no-cache">,
but the sites i've looked at don't even have this in there code?
anyone know?
cheers
chuck
Member
The 'big sites' mostly use ASP, PHP, CFM or any other type of dynamic content.
As the pages are generated 'on the fly' and differently each time, your browser will recognize them as 'new' and load them again from the server.
Your Meta-Tag is principally OK, but you only need it for static HTML-pages.
And I personally found, that it won't always work. This seems to depend on the browser (??) or your provider's cache.
Wolfgang
Member
thanks wolfgang,
so what do you guys use?
chuck
Member
Hi Chuck ...
I believe that putting a past date is more effective ie:
<meta HTTP-EQUIV="Expires" CONTENT="Mon, 06 Jan 1990 00:00:01 GMT">
Also, by default, most browsers are set to check the server dates as to whether the page has been updated since the last visit. This shouldn't be a problem unless your page is being updated on the fly and the browser hasn't been set to check "Every Time".
Re: dynamically created pages - there are problems using these as, sometimes, they cannot be bookmarked. A frustration for newbie users.
cfn ... Jen
Jen Worden
Web Developer
www.meadoworks.com
Member
Hey Jen,
thanks, So how exactly does that work, does it matter what date i put in the meta tag?
chuck
Member
Chuck,
usually, all Meta-Tags go into the head-part of your page.
Like:
<head>
<meta HTTP-EQUIV="Expires" CONTENT="Mon, 06 Jan 1990 00:00:01 GMT">
<title>Great Homepage Title</title>
</head>
... just as an example, using Jen's tip.
By the way Jen, do you know if your method still works when <META HTTP-EQUIV="Pragma" CONTENT="no-cache"> fails ??
Wolfgang
Member
Hi Chuck ...
Nope, the date doesn't matter but you have to use the GMT format. Obviously in order to work, the date should have already have passed. [img]/infopop/emoticons/icon_smile.gif[/img]
Wolfgang, my understanding is, yes. I believe the no-cache was originally an IE-ism that wasn't supported by the W3C but the "Expires" version works in all browsers and is W3C compliant.
cfn ... Jen
Jen Worden
Web Developer
www.meadoworks.com
Posting Permissions
Bookmarks