Map, Reduce & Filter in React
Explore how to use JavaScript's map, reduce, and filter functions within React to render lists and manipulate data arrays effectively. Understand the practical application of these array methods to produce concise and reusable React components, helping you handle dynamic rendering and data transformations without relying on React-specific APIs.
We'll cover the following...
What’s the best approach for teaching the JSX syntax for React newcomers? Usually, I start out with defining a variable in the render() method and using it as JavaScript in HTML in the return block.
import React from 'react';
require('./style.css');
import ReactDOM from 'react-dom';
import App from './app.js';
ReactDOM.render(
<App />,
document.getElementById('root')
);
You only have to use the curly braces to get your JavaScript in HTML. Going from rendering a string to a complex object isn’t any different.
import React from 'react';
require('./style.css');
import ReactDOM from 'react-dom';
import App from './app.js';
ReactDOM.render(
<App />,
document.getElementById('root')
);
Usually, the next question then is: How to render a list of items? That’s one of the best parts about explaining React in my opinion. There is no ...