convert the string of any base to integer in JavaScript code example

Example 1: 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

Example 2: js int

var myInt = 69420

1+1//int
1+"1"//string