react oncline main to code example
Example 1: react js documentation
//With node and npm already installed for basic start
npx create-react-app my-app-name
// if you want to use npm
npx create-react-app my-app-name --npm
//if you want to use typescript
npx create-react-app my-app-name --template typescript
yarn start // app will be hosted on localhost:3000
/* start making changes at ./my-app-name/src/App.js
React documentation: https://reactjs.org/docs/hello-world.html
*/
Example 2: reactjs basic example
// -------// -------// -------
// index.js
// -------// -------// -------
const user = {
name: "zidane",
email: '[email protected]'
};
const element = <h1> {user.name} exist email: {user.email} </h1>;
const element2 =
<div className="heading">
<h1> {user.name} </h1>
<h1> {user.email} </h1>
</div>;
var numbers = [1,2,3,4];
var doubleNumbers = numbers.map(function(num){
return num * 2 + "; ";
})
var doubleNumberArrowFunction = numbers.map((num) => num * 3 + "; ");
var element3 =
<div>
Double numbers: {doubleNumberArrowFunction}
</div>;
ReactDOM.render(
element3,
// <React.StrictMode>
// <App />
// </React.StrictMode>,
document.getElementById('root')
);
// -------// -------// -------
// ------- index.css ------
// -------// -------// -------
.heading {
padding: 10px;
color: white;
background-color: green;
}