If you are looking to learn React using an easy to grasp course, then you have come to the right place. In this lesson, we are going to teach you, step by step, how to use react in the next web development app. This course consists of 26 lessons. It’s very important to study this course by the order the lessons are ordered. Should you have any question, please do not hesitate to contact us.
What is react?
In recent years, single-page applications frameworks, like Angular, Ember, and Backbone have become really popular. React is a view library and not the SPA framework, but still, you can build Single page applications using React’s ecosystem.
React is famous for two reasons:
- It has a small API that makes it really easy to learn and use it.
- React minimizes the number of DOM visits
Why you should learn React?
- Virtual DOM is a simple way of re-thinking about the rendering of the web pages.
- Another really awesome feature of React is its ability to create reusable web components for the UI. React components allow us to take big pieces of HTML and put it into a component of our own. It makes the code a lot easier to read, manage, and change. The ability to do so make it really easy to reuse these components wherever we need to.
- Another reason to learn React is that it’s maintained by Facebook. And whether you care for Facebook or not, there is a huge community who work on React. It is already adopted by giant tech companies like Airbnb, Netflix, Instagram, and Facebook.
- React has a small API and a quite flexible ecosystem. React is still new as compared to other frameworks, but surely holds a place in the future.
- Last but not least, React is very hirable. So, if your goal is to get a job as a front-end developer, React is the JS library that you must to learn.
How virtual DOM works in React?
Like the actual DOM, the virtual DOM is a tree-like representation of web page that lists web elements, and their attributes as objects and properties. Each time the data model experience some changes, a new virtual DOM representation will be created.
Whenever anything changes, the browser re-render the entire UI in a virtual DOM. The actual DOM will be updated only from where the changes have been done. It is like putting a patch which seems fasters in many cases than re-creating the whole DOM.
The pre-requisite of this course
Even if you are only familiar with JS, there is only 20% of the JS which is used 80% of the time.
- Arrow functions
- Var, let, and const in React
- Functions as components
- Libraries in React
- High-order functions in React
- Map, Reduce, and Filter
- React component class
- Shorthand object assignment
- & some more ES6 concepts
What you will learn in this course?
Components in React
When we talk about React, we can’t avoid the concepts of web components. These are the core building blocks of React for creating re-usable pieces of HTML.
Let’s say you have a star rating functionality in your website and the code is more than 40 lines.
Now you have choices; You can copy-paste these 40 lines of code at every page you need this rating functionality which we have been using traditionally, or you can convert this HTML code into a reusable component
<starrating/> to use whenever needed. Without any doubts, the second option is more readable and convenient.
Other topics in React
React in the Future