let strNumber = "42";
let number1 = Number(strNumber);
//number1 is 42

let number2 = parseInt(strNumber);
//number2 is 42

let number3 = +strNumber;
//number3 is 42

console.log(`number1 is ${number1}`);
console.log(`number2 is ${number2}`);
console.log(`number3 is ${number3}`);