Pre-loading external files (CSS, JavaScript) for other pages

Posted by Jason Young on Stack Overflow See other posts from Stack Overflow or by Jason Young
Published on 2009-06-29T18:39:08Z Indexed on 2010/05/01 22:27 UTC
Read the original article Hit count: 146

Filed under:

JavaScript

|

css

|

html

|

jQuery

|

preload

I'm curious if there is an efficient way to wait for the front page of a site to load, and then pre-load CSS and script files that I know will likely be needed for the other pages on the site.

I want the front page of the site to be as fast as possible (lean and mean). It's likely that the user will not immediately click on a link. Since there will likely be some idle time, this seems like an opportune time to pre-load some of the external assets. Pre-loading should cause them to become cached. When the user does click on another page, the only request needed will be for the content and possibly some images, etc.

Has anyone done this? Is it a bad idea? Is there an elegant way to implement it?

© Stack Overflow or respective owner

Related posts about JavaScript

CHAT ROOMs 7 by 6

as seen on Stack Overflow - Search for 'Stack Overflow'
I am looking for chatroom on one page with 7 loggedin users and 6+rows for say 42 users.these users will keep on adding wthnew users.Need urgent help.A PRETTY UNUSUAL Q FOR MOST OF U.What is MORE REQ new features: Usernames are unique to users currently chatting You can see a "currently chatting"… >>> More
Integrating JavaScript Unit Tests with Visual Studio

as seen on Stephen Walter - Search for 'Stephen Walter'
Modern ASP.NET web applications take full advantage of client-side JavaScript to provide better interactivity and responsiveness. If you are building an ASP.NET application in the right way, you quickly end up with lots and lots of JavaScript code. When writing server code, you should be writing… >>> More
Has Javascript developed beyond what it was originally designed to do?

as seen on Programmers - Search for 'Programmers'
I've been talking with a friend about the purpose of Javascript, when and how it should be used, etc. He quoted that: JavaScript was designed to add interactivity to HTML pages [...] JavaScript gives HTML designers a programming tool HTML authors are normally not programmers… >>> More
PHP, javascript, single quote problems with IE when passing variable from ajax post to javascript fu

as seen on Stack Overflow - Search for 'Stack Overflow'
Hi! I have been trying to get this to work for a while, and I suspect there's an easy solution that I just can't find. My head feels like jelly and I would really appreciate any help. My main page.php makes a .post() to backend.php and fetches a list of cities which it echoes in the form of: <li… >>> More
Javascript in XSL that is loaded by Javascript

as seen on Stack Overflow - Search for 'Stack Overflow'
Is there anyway to have javascript run when a XSL sheet has been applied to an XML file by Javascript? I am using a JQuery plugin to apply the sheet to the xml but the javascript that is located inside of the XSL file will not run. I put the Javascript at the bottom of the file and it still does… >>> More

Related posts about css

HTMLUNIT Facebook javascript warning

as seen on Stack Overflow - Search for 'Stack Overflow'
Hi I am trying to create simple application that would be able to search people on facebook using given e-mail. I am already able to log into an account using the HTMLunit tool and even create a page, which should throw result of my search. But when I try to print the result as XML the file is missing… >>> More
$this->headLink() includes duplicated script

as seen on Stack Overflow - Search for 'Stack Overflow'
Hi, Just like I did before, I used the following code for my new project. <?=$this->headLink()->appendStylesheet('/Layouts/admin/css/button.css');?> <?=$this->headLink()->appendStylesheet('/Layouts/admin/css/inputText.css');?> <?=$this->headLink()->appendStylesheet('/Layouts/admin/css/fancyTable… >>> More
How much multiple style sheets slow down to website?

as seen on Stack Overflow - Search for 'Stack Overflow'
Here is 3 css file (one is only for IE) <link rel="stylesheet" href="css/blueprint/screen.css" type="text/css" media="screen, projection"> <link rel="stylesheet" href="css/blueprint/print.css" type="text/css" media="print"> <!--[if lt IE 8]><link rel="stylesheet" href="css/blueprint/ie… >>> More
mod_pagespeed is rewriting but not combining

as seen on Stack Overflow - Search for 'Stack Overflow'
I have the following problem. I installed mod_pagespeed but i am not getting the results i want! It does rewrite my css and changes the to the cache url but its not combining the css files. I have seached the web and stackoverflow for it but did not find a solution. Here are the tags <link… >>> More
CSS import or multiple CSS files

as seen on Stack Overflow - Search for 'Stack Overflow'
I originally wanted to include a .css in my HTML doc that loads multiple other .css files in order to divide up some chunks of code for development purposes. I have created a test page: <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional… >>> More