React.js

With the trend towards dynamic and fast applications emerging over the last few years it’s not hard to see why React.js is proving such a popular tool. It allows you to build applications in which data can be changed without reloading a page.

Why should I learn React.js?

React.js is an incredibly lightweight JavaScript library for developing UI.

With the trend towards dynamic and fast applications emerging over the last few years it’s not hard to see why React.js is proving such a popular tool. It allows you to build applications in which data can be changed without reloading a page.

It uses the concept of a ‘virtual DOM’.

This is important because working with the actual DOM can be hard. Typically developers would have to do things like event handling, and updating the DOM manually. The implications of the virtual DOM is that developers don’t need to describe and build out the various internal interactions inside their application, but can instead declaratively building the UI, with React itself managing the changes inside it.

React.js is an in-demand web development tool.

React.js is arguably the definitive front end development tool. In a matter of years it’s adoption has skyrocketed, and is now being used by a huge range of different organizations large and small.

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The real danger is not that computers will begin to think like men, but that men will begin to think like computers.

Sydney Harris (Journalist)

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Top Questions about React.js

How does React.js compare to Angular and Vue.js?

It makes sense to compare React, Angular and Vue - the three are the most widely used front-end JavaScript tools. React, however, is the most popular, moving past Angular a couple of years ago - this is an indication that it’s particularly well-suited to the types of applications and websites developers want to build today as well as how they want to do it. /p>

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WWhat do you need to know to start learning React?

It’s important to have a solid understanding of JavaScript before learning React. This doesn’t mean you need an encyclopaedic knowledge of the programming language, but you should be comfortable and familiar with concepts such as ES6 classes and the ES6 module system, arrow functions, and the variable declarations let and const. Alongside Vanilla JavaScript, it’s also useful to know npm and WebPack - but you don’t necessarily need to know these to get started at a really basic level.

What’s the difference between React.js and React Native?

React.js is a JavaScript library for building UI on the web - ie. in the browser. React Native, meanwhile, is a development framework that lets you build applications from the ground up. React Native relies heavily on React.js and the principles on which it is built are the same. However React Native should be used if you’re building applications that can be used on mobile or desktop.

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