Vanilla JavaScript - What is it?

Discover the pure essence of JavaScript: no libraries, no frameworks, just the language in its simplest and most powerful form.

Introduction

In the world of web development, JavaScript is one of the most fundamental and widely used programming languages. With the proliferation of frameworks and libraries such as React, Angular, and Vue.js, the importance of mastering “Vanilla JavaScript” is often overlooked. This term refers to the pure, straightforward use of JavaScript without relying on any additional libraries or frameworks. Below, we’ll explore what Vanilla JavaScript is, why it’s crucial for web developers, and how it can impact your career.

What is Vanilla JavaScript?

Vanilla JavaScript is simply JavaScript without any extensions, frameworks, or external libraries. It is the “pure” form of JavaScript, used as it was designed by the language’s creators. When you work with Vanilla JavaScript, you use only the native functionality that the language provides, without any additional aids.

The term “vanilla” in programming usually refers to something that is standard, with no frills or customizations. In the same way that vanilla ice cream is the base upon which other flavors or toppings can be added, Vanilla JavaScript is the foundation upon which frameworks and libraries are built.

History and Evolution:

Since its creation in 1995, JavaScript has evolved considerably. However, the foundation of the language, i.e. Vanilla JavaScript, is still relevant and is the backbone on which all modern web applications are developed. More recent versions of JavaScript, such as ES6 (ECMAScript 2015) and later, have added new functionality, but the core remains the same.

Why Learn Vanilla JavaScript

Mastering Vanilla JavaScript is essential before venturing into frameworks like React, Angular, or Vue.js. These frameworks are built on top of JavaScript, and understanding the basics will allow you to use these tools more effectively and solve problems when they arise.

When working with Vanilla JavaScript, you have full control over your code. This allows you to optimize performance, avoid unnecessary dependencies and write more efficient code. Without the “magic” that frameworks provide, you develop a deeper understanding of how JavaScript really works.

By not relying on heavy frameworks, applications built with Vanilla JavaScript tend to be faster and lighter. This is especially important in smaller projects or when performance is a priority.

Without the abstraction provided by frameworks, developers who master Vanilla JavaScript are better equipped to identify and fix problems directly in the code. This is a valuable skill that differentiates a good developer from an excellent one.

Advantages of Using Vanilla JavaScript

Vanilla JavaScript is compatible with all modern and legacy browsers. This ensures that your code will work correctly in any environment, without having to worry about the limitations of a specific framework.

By eliminating the need to load library files or frameworks, web pages that use Vanilla JavaScript tend to have faster load times. This improves the user experience and can have a positive impact on your site’s SEO.

Although frameworks like React or Angular are designed for large and complex applications, they are not always necessary for smaller projects. Vanilla JavaScript allows you to scale an application in a progressive way, adding only what is necessary, without overloading the project from the beginning.

Practical Examples of Vanilla JavaScript Usage

  1. DOM manipulation: A classic example of Vanilla JavaScript is DOM (Document Object Model) manipulation. Without the need for jQuery or another framework, you can select, create, modify or remove HTML elements directly with native methods such as document.querySelector(), createElement(), or removeChild().
  2. Form Validation: Vanilla JavaScript is ideal for tasks such as frontend form validation. For example, you can use the addEventListener() method to handle events such as real-time data entry, validating that the user is entering a valid email or that all required fields are complete before submitting the form.
  3. Interactive Web Applications: With Vanilla JavaScript, you can build interactive web applications that respond dynamically to user interaction. For example, you can create an image gallery that refreshes without reloading the page or a task list that allows you to add, edit and delete items, all using only native JavaScript.

Learning Curve and Considerations

Although Vanilla JavaScript is essential for every web developer, learning it can be a challenge, especially without the structure and “helpers” that frameworks provide. However, investing time in learning pure JavaScript rewards with a deeper understanding of the language and better problem-solving skills.

JavaScript is constantly evolving. New features introduced in ES6 and later, such as classes, arrow functions and promises, make the language more powerful and expressive. Keeping up with these updates is key to taking advantage of all that Vanilla JavaScript has to offer.

Real Examples of Use in Industry:

GitHub is an excellent example of a company that uses Vanilla JavaScript extensively in their user interface. Although they use frameworks in certain areas, many of the basic interactions and features are built using pure JavaScript to maximize performance and compatibility.

Etsy, a popular online marketplace, also leverages Vanilla JavaScript in key parts of its frontend to ensure that users on low-performance devices have a smooth and fast user experience.

Conclusion

Mastering Vanilla JavaScript is an essential step for any developer seeking a solid career in web development. Not only does it provide a fundamental understanding of the language, but it also allows for greater control, flexibility and efficiency in application development. While frameworks and libraries have their place and are powerful tools, they should never replace in-depth knowledge of pure JavaScript.

At Ubiqum Code Academy, we understand the importance of this fundamental knowledge. Our hands-on, customized courses are designed to teach you JavaScript from the ground up, ensuring that you are prepared to use any framework or technology that comes your way. With our “learning by doing” methodology, we guide you through real projects that will prepare you for the challenges of the professional world. If you’re ready to take your web development skills to the next level, Ubiqum Code Academy is the place to start!

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Full Stack Web Development with JavaScript/MERN

Full Stack Web Development with Java

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