How to Check JQuery Version? (Methods to Find JQuery version)

JQuery is a popular JavaScript library designed to simplify complex tasks with minimal code. Known for its "write less, do more" philosophy, jQuery includes a single, lightweight .js file (about 19KB minified and gzipped) that streamlines various web development tasks.

The web's core technologies are HTML, CSS, and JavaScript. HTML structures web content, CSS styles it, and JavaScript adds interactivity and animations triggered by user actions like clicks or scrolls.

To simplify JavaScript tasks, many developers use jQuery, which offers numerous benefits, including cross-browser compatibility and support for AJAX technology. 

In this article, we will explore how to check jQuery version that you are using on the website.

Key Features of JQuery

The jQuery include the following key Features:

• DOM Selection: Quickly select elements based on criteria like tag names, IDs, classes, and attributes.
• Special Effects: Easily implement effects such as showing, hiding, and fading elements.
• AJAX: Enable seamless data retrieval from servers without the need to refresh the page.
• Interactive Animations: Add engaging animations to enhance the visual appeal of your website.
• Cross-Browser Compatibility: Handle browser differences automatically to ensure consistent functionality.
• Event Handling: Manage user interactions, such as clicks and hover actions, and address browser-specific issues.
• DOM Manipulation: Effortlessly alter HTML content, attributes, and CSS classes.

The main jQuery's goal is to simplify JavaScript coding and improve web development efficiency.

JQuery Versions: A Brief Overview

The table below provides a brief overview of various jQuery versions, highlighting key release dates and notable updates for each version. This overview helps track the evolution of jQuery and understand its enhancements over time.

jQuery Version	Latest Update	Size (KB)	Description
1.0	-	-	The first stable release of the jQuery library.
1.1 and 1.2	1.2.6	54.2	Released in January 2007 and September 2007, respectively.
1.3	1.3.2	55.9	Introduced the Sizzle selector engine in 2009.
1.5	1.5.2	83.9	Added deferred callback management and rewritten Ajax module.
1.6	1.6.4	89.5	Improved performance in attr() and val() functions.
1.7	1.7.2	92.6	Introduced new APIs like .on() and .off(), while maintaining support for older APIs.
1.8	1.8.3	91.4	Rewritten Sizzle selector engine, improved animations, and $ flexibility.
1.9	1.9.1	90.5	Removed deprecated interfaces and cleaned up unnecessary code.
1.10	1.10.2	90.9	Focused on bug fixes.
1.11 and 1.12	1.11.3 and 1.12.4	93.7 and 94.9	Released in 2014 and 2016, respectively.
2.0	2.0.3	81.7	Reduced file size and improved performance; supported IE 6–8.
3.0	3.0.0	84.3	Added support for HTML5, Deferreds, $.ajax, and $.when.
3.1	3.1.1	84.7	Introduced jQuery.ready exception.
3.2	3.2.1	84.6	Enabled retrieval of <template> element contents and deprecated old methods.
3.3	3.3.1	84.9	Added support for class functions in an array format.
3.4	3.4.1	84.1	Included performance improvements, nonce, and no module support; fixed radio element issues.
3.5	3.5.1 (latest)	84.4	Added security fixes, .even() and .odd() methods; deprecated jQuery.trim.

 

How to Check JQuery Version? (Get JQuery Version)

If you're working with web applications and want to get JQuery version being used, this guide will help you how to check JQuery version. The process involves a few steps: 

 

• Inspect the website's HTML source to check for jQuery script tags, 
• Get the JQuery version Using the browser’s Developer Tools to test for jQuery objects or functions in the console
• Run a simple command to get jQuery version. 

 

In addition, you can explore custom JavaScript files for any references to jQuery. This approach will ensure you can accurately get JQuery version in use.

How to Get JQuery Version Using Firebug Console in Firefox?

To check the jQuery version using the Firebug console in Firefox, follow these steps:

 

• Open the website you want to inspect.
• Right-click on the page and choose "Inspect Element with Firebug."
• Go to the "Console" tab in Firebug.

Enter one of the following commands into the console:

 

> console.log(jQuery.fn.jquery);

> console.log(jQuery().jquery);

 

After writing the Press Enter. The console will then display the jQuery version used on the site.

How to Check JQuery Version? (Using Source Code Inspection)

This method involves checking the website's source code to identify if jQuery is being used. To check JQuery version using manual source code inspection, follow these steps:

Step 1: Inspect the HTML Source:

• Open the website in your browser.
• Right-click on the page and select "View Page Source" or a similar option depending on your browser.

Step 2: Locate jQuery Script Tags:

• Look for <script> tags that include jQuery. 
• For example: <script src="https://code.jquery.com/jquery-3.6.0.min.js"></script>.

Step 3: Search for jQuery Objects or Functions:

• Open the browser’s Developer Tools and go to the "Console" tab.
• Type jQuery or $ and press Enter. If jQuery is in use, this will return a function. If jQuery is not present, the console will usually display an error like Uncaught ReferenceError: jQuery is not defined.

Step 4: Determine the jQuery Version:

• In the "Console" tab, type jQuery.fn.jquery or $.fn.jquery and press Enter. This command will show the version of jQuery currently in use, such as "3.6.0".

Step 5: Examine JavaScript Files:

• Sometimes jQuery is included in custom .js files. Open these JavaScript files and check if jQuery is referenced. You might also find the version number in these files.

Following the above steps, you can confirm whether the website uses jQuery and easily determine its version.

Why JQuery is so Popular? (Features of JQuery)

jQuery is widely adopted by businesses, including major ones like Netflix and Google, for several reasons:

• Strong Community Support: With a large user base, jQuery benefits from extensive support and contributions from professionals and developers who assist with various challenges.

• Cross-Browser Compatibility: It resolves differences between browsers, ensuring a consistent experience for users.

• Lightweight and Modular: jQuery has a small footprint and features an efficient plugin architecture.

• Comprehensive Documentation: Its API is well-documented with clear examples, making it user-friendly.

• Compatibility: jQuery works well with other JavaScript libraries, facilitating integration and use.

Disadvantages of jQuery

Despite its advantages, jQuery has some drawbacks:

• Customization Limits: While jQuery offers a vast library, there may be situations where raw JavaScript is needed for specific customizations.

• Performance Concerns: Although jQuery's size is relatively small (20-100KB), hosting the script on a personal web server can sometimes impact performance.

Conclusion

jQuery simplifies complex tasks and helps achieve significant results with less effort. In this guide, we explored what jQuery is, its historical releases, and methods how to check jQuery version. Understanding these aspects is crucial before using jQuery.

You can also get jQuery version on a website by using an online jQuery version detector or by checking the source code manually. Additionally, we covered the advantages and disadvantages of jQuery. If you have any further questions, feel free to leave a comment.

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