Javascript Object is()

Introduction

Javascript 6 Object.is() accepts two arguments: 

console.log(Object.is(true, 1)); // false 
console.log(Object.is({}, {})); // false 
console.log(Object.is("2", 2)); // false 

// Correct 0, -0, +0 equivalence/nonequivalence: 
console.log(Object.is(+0, -0)); // false 
console.log(Object.is(+0, 0)); // true 
console.log(Object.is(-0, 0)); // false 

// Correct NaN equivalence: 
console.log(Object.is(NaN, NaN)); // true



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