# .jquery

Categories: Internals | Properties > Properties of jQuery Object Instances

## jquery Returns: String

Description: A string containing the jQuery version number.

- #### version added: 1.0jquery

The `.jquery` property is assigned to the jQuery prototype, commonly referred to by its alias `$.fn`. It is a string containing the version number of `jQuery`, such as "1.5.0" or "1.4.4".

### Examples:

#### Example: Determine if an object is a jQuery object

    var a = { what: "A regular JS object" },
        b = $('body');

    if ( a.jquery ) { // falsy, since it's undefined
        alert(' a is a jQuery object! ');
    }

    if ( b.jquery ) { // truthy, since it's a string
        alert(' b is a jQuery object! ');
    }

#### Example: Get the current version of jQuery running on the page

    alert( 'You are running jQuery version: ' + $.fn.jquery );