Answers for "if number convert in string in js"

converst strig in number in js

const numberInString = "20"; 
console.log(typeof(numberInString)) // typeof is string this is string in double quote " "
const numInNum = parseInt(numberInString) // now numberInStrings variable converted in an Integer due to parseInt
console.log(typeof(numInNum)) // this tell us the type of numInNum which is now a number

javascript convert a number in string

const num = 123; //> type number 123
const str = num.toString(); //> type string "123"