APEX 5: jQuery Migration

If you like to write custom JS code in your APEX applications or to use lots of 3^rd party plugins you should be aware of changes in jQuery and JS libraries in APEX 5.

APEX 5 (at least current version 5.0.0.00.28) uses jQuery 2.1.3 and if you plan to migrate from APEX 4.2 you should check for changes from jQuery version 1.7.1 which is included in APEX 4.2. There are some things that are deprecated and removed like .die() or .live() event handlers.

Here you can find things that are removed:

http://api.jquery.com/category/removed/

But APEX development team was one step ahead and they provided us with quick solution to include jQuery Migrate plugin that restores deprecated features and behaviors of jQuery.

You can turn it on under the User Interface Attributes Page, JavaScript tab. My advice is that you should clean up your code and not to use any deprecated code.

Note that, as you can read in jQuery documentation, jQuery 2.x has the same API as jQuery 1.x, but does not support Internet Explorer 6, 7, or 8. APEX development team also thought of that and they put conditional comment to handle this:

<!--[if lt IE 9]><script type="text/javascript" src="/i/libraries/jquery/1.11.2/jquery-1.11.2.min.js?v=5.0.0.00.28"></script><![endif]-->

<!--[if gte IE 9]><!--><script type="text/javascript" src="/i/libraries/jquery/2.1.3/jquery-2.1.3.min.js?v=5.0.0.00.28"></script><!--<![endif]-->

Also be aware that by default when you create new application in APEX 5 there is no more old non-namespaced APEX JavaScript functions in your application (as part of legacy.js). You can include them by turning on property Include Legacy Javascript in User Interface Attributes page, JavaScript tab.

Again, don't do that. Rather clean up your code!