how to give not equal in javascript code example

Example 1: javascript does not equal

!= not equal 
!== not equal value OR type

Example 2: javascript not equal

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

Example 3: not equal to in js

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