JavaScript Internals (521 Qs)•Part 4: Prototypes, Object Methods & Event Loop (174 - 253)
What is the purpose of using object is method
Some of the applications of Object's is method are follows,
- It is used for comparison of two strings.
- It is used for comparison of two numbers.
- It is used for comparing the polarity of two numbers.
- It is used for comparison of two objects.
Practical Code Example
javascript
// Object.is() determines if two values are the same value (SameValue algorithm):
// Key differences with ===:
console.log(NaN === NaN); // false
console.log(Object.is(NaN, NaN)); // true (Handles NaN identity correctly!)
console.log(-0 === +0); // true
console.log(Object.is(-0, +0)); // false (Distinguishes negative zero)