7

I would like to upgrade a site from 1.3.2 to 1.4 as I see there are some good performance improvements.

  1. Can I simply drop this in or should I be concerned about my plugins working?

  2. Is it backward compatible?

  3. What should I be worrying about?

Improve this question
1
  • @oo thanks for the question to let me know there is JQuery 1.4
    – ACP
    Commented Jan 21, 2010 at 11:07

4 Answers 4

Reset to default
7

Check this page: http://jquery14.com/day-01/jquery-14 (cached version from web.archive.org)

On the bottom there's a list of breaking changes. It will give you an idea if there are issues for you.

There's also a plugin which makes jQuery 1.4 compatible with 1.3.

Improve this answer
2
  • Unfortunately, the first link have no original content, and the second one is 404. Which makes this answer not useful anymore :(
    – Eel Lee
    Commented May 27, 2016 at 15:05
  • do you really need to upgrade jquery 1.3 to jquery 1.4 in May 2016?
    – Shiran Dror
    Commented May 27, 2016 at 16:31
1

you should be fine but there are a list of potential issues here:

http://jquery14.com/day-01#backwards

Improve this answer
1

Best bet is to try it and see. jQuery14.com has a backward compatibility list, as well as a 1.3-compat plugin you can use to soften the blow.

Improve this answer
0

I've done the same thing the other day and had no issues. One interestng thing is that the site claims that 1.4 no longer defaults $() to $(document).ready - I do however have such code and it is working fine...

Improve this answer

Not the answer you're looking for? Browse other questions tagged or ask your own question.