Upgrade to jQuery 3

[mgol]

Currently our sites use jQuery 1.11.3. We should switch to jQuery 3 (eating our own dogfood etc.).

cc @dmethvin @timmywil

Note that this doesn't apply to examples on various API sites which have jQuery copies versioned in repositories specific to those sites.

[mgol]

jQuery is loaded here in the theme: https://github.com/jquery/jquery-wp-content/blob/f9ac577/themes/jquery/header.php#L31

[timmywil]

We'll need to test each site individually, and if any fail in a way that is not trivial to fix, we'll need to parameterize the jQuery version. Here is the comprehensive list:

• jquery.com
• blog.jquery.com does not load jquery-wp-content
• api.jquery.com
• plugins.jquery.com
• learn.jquery.com
• jqueryui.com
• blog.jqueryui.com does not load jquery-wp-content
• api.jqueryui.com
• jquery.org needs redirects to openjsf.org
• jquerymobile.com
• api.jquerymobile.com
• brand.jquery.org
• contribute.jquery.org
• meetings.jquery.org
• releases.jquery.com

[mgol]

jquery.org doesn't fully redirect to openjsf.org. Its home page & some other pages do but e.g. https://jquery.org/team/ is not redirected, the same applies to https://jquery.org/history/.

Although, these pages look quite obsolete. Maybe we should make sure everything gets redirected and kill the site completely.

[timmywil]

Thanks. I didn't notice that, but I agree we can kill the site.

[mgol]

The history site can be quite interesting. It stopped getting updated in 2014 and many links are dead and would have to be rewritten with Web Archive but still.

[timmywil]

I think if we wanted a page like that, we should just redo it static. As it's been broken for a while and not updated, I'd like to redirect and maybe add a history page later.

[timmywil]

All sites pass locally. The pages in demos and examples are loaded in iframes and have their own versions of jquery. I'm fairly confident we don't need to parameterize.

[mgol]

Good to hear!

[timmywil]

I would like to point out that whatever theme the blogs are loading has an even older version of jQuery than jquery-wp-content. That could also be upgraded, but I'd need to be pointed to where those themes are.

[timmywil]

Nevermind, I think I found it https://github.com/jquery/blog.jquery.com-theme

[timmywil]

Opened jquery/blog.jquery.com-theme#6 on the blog theme

[timmywil]

I've run through all the staging sites and they look good to go. The only one I couldn't view was http://stage.jquerymobile.com. It's showing a 500 "Error establishing a database connection".