javascript is not equals to 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: not equal to sign in js

let a=12
if(a!=5){
  console.log(true)
}
since a is not equal to 5, it will print true

Example 3: javascript not equal

0 !== "0"
0 !== 0