How to detect and print jQuery version?

Question

Is there a jQuery function that returns the version of jQuery loaded?

Answer 1

You can use this:

$.fn.jquery //or if you're using .noConflict(): jQuery.fn.jquery 

It automatically updates when building jQuery defined here: http://github.com/jquery/jquery/blob/master/src/core.js#L174

Be sure to use $.fn.property for properties that are independent of the object, there is no reason to create an unnecessary jquery object using $().property Property if you are not going to use it :)

Answer 2

 alert( $.fn.jquery ) 

Answer 3

 $().jquery; // yields the string "1.4.2", for example 

Source: http://jquery-howto.blogspot.com/2009/02/how-to-check-jquery-version.html

Answer 4

 $().jquery; 

This will return a string containing the jQuery version

Answer 5

I'm not sure how many versions of jQuery exist, but the jQuery object has a jquery property that stores the version.

 alert( $().jquery ); 

Will warn 1.4.2 if you use this version.

Answer 6

to try

 alert($().jquery) 

Answer 7

The warning is good, but if you want to actually print the jquery version ...

 <script> document.write($.fn.jquery); </script>