How to use react

Usage of react: 1. JAVASCRIPT library used to build user interface; 2. Used to build UI; 3. Used to set up Instagram website; 4. It has high performance and the code logic is very simple.

#React

• React is a JAVASCRIPT library for building user interfaces.

• React is mainly used to build UI. Many people think that React is the V (view) in MVC.

• #React originated as an internal project at Facebook and was used to build the Instagram website, and was open sourced in May 2013.

• React has high performance and very simple code logic. More and more people have begun to pay attention to and use it.

#React Features

1. Declarative design −React adopts a declarative paradigm, which makes it easy to describe applications.

2. Efficiency −React minimizes interaction with the DOM by simulating the DOM.

3. Flexible −React works well with known libraries or frameworks.

4.JSX − JSX is an extension of JavaScript syntax. JSX is not required for React development, but it is recommended.

5. Components − Building components through React makes it easier to reuse code and can be well applied in the development of large projects.

6. One-way response data flow − React implements one-way response data flow, thereby reducing duplicate code, which is why it is simpler than traditional data binding.

What you need to know before reading this tutorial:

Before you start learning React, you need to have the following basic knowledge:

• HTML5

• CSS

• JavaScript

##React First Example

React Example

<div id="example"></div>
<script type="text/babel">
  ReactDOM.render(
    <h1>Hello, world!</h1>,
    document.getElementById(&#39;example&#39;)
  );
</script>

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