Vlad Zotov renton4code

renton4code / react-class-vs-hooks.js

Last active April 12, 2022 07:31

React class vs hooks


	class Example extends React.Component {
	contructor(props) {
	super(props);
	}
	componentDidMount() {
	console.log("component has been mounted");
	}
	componentDidUpdate() {
	console.log("component has been updated");

renton4code / pure-function-vs-impure-function.js

Last active April 11, 2022 15:35

Pure function vs impure function

	const pureMultiplyItemsBy = (arrayOfNumbers, multiplier) => {
	return arrayOfNumbers.map(_ => _ * multiplier);
	}

	const impureMultiplyItemsBy = (arrayOfNumbers, multiplier) => {
	for (let i = 0; i < arrayOfNumbers.length; i++) {
	arrayOfNumbers[i] *= multiplier;
	}
	return arrayOfNumbers;
	}