jquery 1.9.0 live function?

Question

There is no live() function in jquery 1.9.0, but jquery.unobtrusive.ajax.js is already use this function.

Should I us

Answer 1

Depreciated as of 1.7 and removed as of 1.9. Use on() instead.

http://api.jquery.com/on/

$("#myButton").on("click", function(){
    alert("Clicked");
});

Lots of good info here:

http://www.elijahmanor.com/2012/02/differences-between-jquery-bind-vs-live.html

As for Unobtrusive Ajax, you will need to include a version of jQuery prior to v1.9 where live() still exists.

If you are referencing the MS CDN,

http://ajax.aspnetcdn.com/ajax/mvc/3.0/jquery.unobtrusive-ajax.js http://ajax.aspnetcdn.com/ajax/mvc/3.0/jquery.unobtrusive-ajax.min.js

then it does not appear that these directly reference jQuery. Simply include the 1.8 version in your code instead of the 1.9 version.

Answer 2

jquery.migate adds back in the legacy function. This means that jquery.unobtrusive.ajax.js functions as expected.

Reference the jquery.migrate library as per the official blog and there is a nuget pacakge too but obviously you'll need to update your template/layout views.

http://blog.jquery.com/2013/01/31/jquery-migrate-1-1-0-released/

http://nuget.org/packages/jQuery.Migrate/

Javascript console does highlight the issue ...

JQMIGRATE: Logging is active JQMIGRATE: jQuery.fn.live() is deprecated JQMIGRATE: jQuery.fn.andSelf() replaced by jQuery.fn.addBack() JQMIGRATE: jQuery.clean() is deprecated

Answer 3

live() has been deprecated in the latest jQuery versions but Microsoft mantains updated unobtrusive scripts as NuGet packages that overwrite the default ones:

• Microsoft.JQuery.Unobtrusive.Ajax
• Microsoft.JQuery.Unobtrusive.Validation

Answer 4

.live() has been replaced with the event delegation syntax of .on():

$('#parent').on('click', '.child', function() {
  ...
});

#parent should exist when you call your selector, so if your element is top-level, use document as the parent.