Silver Library (Archived)

Suppose you installed react with npx create-react-app and install typescript on it as well. And you need a quick solution of it. Here is how I did. npm install --save typescript @types/node @types/react @types/react-dom @types/jest Add tsconfig.json with tsc --init Modify App.js and index.js to tsx. You will see errors. This means you need to define types for its error to be removed. Index.tsx w..

Abstract. To utilise major feature in react.js, here is the example of composing the clock display. const root = ReactDOM.createRoot(document.getElementById('root')); class Clock extends React.Component { render() { return ( Hello, world! It is {this.props.date.toLocaleTimeString()}. ); } } function tick() { root.render(); } setInterval(tick, 1000); Source - codepen, Dan Abramov

The point is; how to make it like expert? A function's this keyword behaves a little differently in JavaScript compared to other languages. It also has some differences between strict mode and non-strict mode. In most cases, the value of this is determined by how a function is called (runtime binding). It can't be set by assignment during execution, and it may be different each time the function..