=== operator for js

var price1 = 10;
var price2 = 10;
var price3 = new Number('10');
var price4 = price3;
var price5 = new Number('10');
console.log(price1 === price2); // logs true: primitive values compared by value

console.log(price1 === price3); //logs false: compares object with primitive

console.log(price4 === price3);// logs true: same references

alert("now checking price5...")
console.log(price5 === price3);// logs false: diff references