Converting from jQuery to JavaScript

Learn how to convert your jQuery code to pure JavaScript with this step-by-step guide. Discover the benefits, common conversions, and practical tips to ease your transition.
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Transitioning from jQuery to JavaScript can seem daunting, especially for developers accustomed to jQuery's convenience. However, modern JavaScript (ES6 and beyond) offers robust features that allow you to achieve the same functionality without relying on jQuery. This guide will help you convert common jQuery code to vanilla JavaScript, highlighting the benefits and providing practical examples.

Why Convert from jQuery to JavaScript?

Performance
JavaScript code typically runs faster than jQuery because it doesn't require loading the jQuery library, which can reduce page load times and improve performance.

Modern Features
JavaScript has evolved significantly, offering features like fetch, Promises, async/await, and more, which provide powerful tools for modern web development.

Control and Understanding
Using JavaScript directly can give you more control over your code and a deeper understanding of how things work under the hood.

Common jQuery to JavaScript Conversions

Selecting Elements
jQuery:

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JavaScript:

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For selecting multiple elements:
jQuery:

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JavaScript:

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Manipulating Classes
jQuery:

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JavaScript:

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Handling Events
jQuery:

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JavaScript:

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AJAX Requests
jQuery:

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JavaScript:

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Showing and Hiding Elements
jQuery:

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JavaScript:

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Animations
jQuery is known for its simple animation methods like fadeIn, fadeOut, and animate. In JavaScript, animations typically involve CSS transitions or the Web Animations API.

jQuery:

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JavaScript with CSS:

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DOM Manipulation
jQuery:

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JavaScript:

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Tips for a Smooth Transition

Start Small
Begin by converting smaller, less critical parts of your codebase. This allows you to gradually become familiar with JavaScript's syntax and methods.

Use Polyfills
For older browsers, some modern JavaScript features may not be supported. Polyfills can help bridge this gap.

Test Thoroughly
Ensure that you test your converted code thoroughly to catch any bugs or performance issues early.

Leverage Modern Tools
Modern JavaScript frameworks and tools like Babel and Webpack can help manage compatibility and streamline development.

Conclusion

Converting from jQuery to JavaScript can be highly beneficial, offering better performance, modern features, and greater control. By understanding common conversions and following best practices, you can make the transition smoothly and enhance your web development skills.