how to string compare in javascript code example

Example 1: javascript compare number to string

let string = "1";
let number = 1;
if (parseInt(string) === number){
  	// STRING AND NUMBER MATCHES
}
if (string == number){
  // STRING AND NUMBER MATCHES ALSO BECAUSE == instead of ===, means it won't compare datasets, only the content
}

Example 2: javascript compare strings

console.log(NaN===NaN);//false