Pravin Varma

let num = 1; console.log(1e1); // 10 console.log(2e1); //20 console.log(2e-1); //0.2 console.log(2e-2); //0.02 console.log(2e-3); //0.002 console.log((123456).toString()); //123456 console.log((123456).toString()); //123456 let num2 = 255; console.log(num2.toString(16)); //ff

If you are using IntelliJ IDEA and working on test cases and if you want to run test cases in a particular file or a

Most of the blogs provide code that has parent and child component placed in the same file. The context is available to both the component.

import React,{useMemo,useState} from “react”;import “./style.css”;export default function App() { const [state, setState] = useState(0); for(let i=1;i<10;i++){ let a=1; let b = 1; console.log(useMemo(()=> {console.log(‘invoked’);return a+b},[a,b]))

componentDidMount useEffect(() => { // will run on every render }); useEffect(() => { // will run on first render },[]); componentDidUpdate useEffect(() => {

This is the parent component import React,{useEffect, useState} from ‘react’; import ‘./style.css’; import Child1 from ‘./child1’; export default function App() { const [change, setChange] =