React: loop inside JSX code

If you are using React JS and want to add a component multiple times, maybe inserting it into some JSX code, you could think of using a for loop inside the return statement of your JSX. But this approach doesn’t work in JSX, as you should compose the returned value from the render function of … Continue reading “React: loop inside JSX code”

How to use React from the browser

React, as you probably know having reached this page, is a visualization framework created by Facebook. This small guide explains how to use react from the browser without any additional tool. Professional development with React nowadays includes the usage of npm (node package manager) to install packages like React and ReactDOM, and that of module bundlers … Continue reading “How to use React from the browser”

Iniziare con React: come usare React dal browser

React, come probabilmente saprete se siete giunti qui, è il framework per la visualizzazione creato da Facebook. Questa piccola guida spiega come utilizzare React dal browser senza l’uso di altri tool. Lo sviluppo professionale con React oggi come oggi prevede infatti l’uso di npm (node package manager) per l’installazione dei pacchetti come React e ReactDOM, … Continue reading “Iniziare con React: come usare React dal browser”

Create a production build using React JS

You probably saw some warnings that say you’re using React in development mode, and want to know how to create a production build using React. Why you get a warning of being in React development mode Normally you import React JS in your javascript ECMA 6 code with the following statements in a .js file … Continue reading “Create a production build using React JS”

How to downgrade from React JS 16 to 15

If you, as me, upgraded React 15 to 16, and then noticed a bug in you app, you’d like to downgrade, at least temporarily, to React 15. To do this, you need to issue the following command:

This will bring React to version 15.6.2 again. After fixing the bug, you can run the following … Continue reading “How to downgrade from React JS 16 to 15”