jQuery jquery Property

The jquery property in jQuery objects holds the version number of the jQuery library currently in use. It is a simple string value that helps developers check which version is loaded on a page.

What is the jquery Property?

  • Returns the jQuery version as a string (e.g., "1.12.4").
  • It is a read-only property; you cannot modify it.
  • Useful for debugging or ensuring compatibility in scripts.

How jquery Property Works?

Whenever you include the jQuery library, it attaches a jquery property to its global function. Any jQuery object you create inherits this property, making it easy to retrieve the version at runtime.

Syntax

Example

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var version = $.fn.jquery;

Display jQuery Version

This example prints the version number of the loaded jQuery library onto the page.

Example

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$(document).ready(function() {
  var version = $.fn.jquery;
  $("#result").text("Current jQuery version: " + version);
});

fn is an alias for jQuery.prototype; it’s where all jQuery methods (like hide(), css(), etc.) are defined. $.fn.jquery accesses the version string from jQuery’s prototype directly.