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Feature #1024

open

Remove unneeded .js files to speed page load

Added by W Snyder almost 16 years ago. Updated over 11 years ago.

Status:
New
Priority:
Normal
Assignee:
-
Category:
-
Target version:
-
Start date:
2008-04-09
Due date:
% Done:

0%

Estimated time:
Resolution:

Description

I'm finding the load of the first page by a user is very slow over medium speed links. I think this is simply due to the fact that base.rhtml includes 5 javascript files, which are 172KB in size.

I wonder if any of these could be disabled? For example, is there any drag-and-drop in redmine?

If they're all needed, perhaps they can be all "cat"ed together to improve performance? I've done this with the .css files already to good benefit.

BTW, see for example

http://infovore.org/archives/2006/07/11/javascript_include_tag-defaults-considered-harmful/

which came up in my quest to understand how rails deals with javascript_include_tag.

Thanks

Actions #1

Updated by Rocco Stanzione almost 16 years ago

+1 for the potential performance benefit. We don't even get to cache the javascripts, even going through a caching proxy, because Rails deliberately prevents it by appending a timestamp to the filenames. We could omit js includes from layouts/base altogether and make use of <%= yield :header_tags %> to allow each view to specify which .js files it needs.

Actions #2

Updated by Daniel Felix over 11 years ago

Has this thing already be reviewed?

In the past 4 years there some been many commits. This should be checked, maybe a Modernizr implementation would be helpful to help the migration to HTML5 and CSS3. This way, there could be some lazy loading JS implementation. Just as an idea.

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