JavaScript Number Object Methods

In JavaScript, the Number object provides several methods for working with numbers and performing various operations. Here are some commonly used methods of the Number object:

1. Number.parseFloat()

- Syntax: 

Number.parseFloat(string)

- Description: Parses a string argument and returns a floating-point number.

- Example:

let str = "3.14";
let num = Number.parseFloat(str);
console.log(num); // Output: 3.14

2. Number.parseInt()

- Syntax: 

Number.parseInt(string, radix)

- Description: Parses a string argument and returns an integer.

- Example:

let str = "42";
let num = Number.parseInt(str);
console.log(num); // Output: 42

3. Number.isNaN()

- Syntax: 

Number.isNaN(value)

- Description: Returns 'true' if the value is NaN (Not-a-Number), otherwise returns 'false'.

- Example:

let result = Number.isNaN("Hello");
console.log(result); // Output: false

4. Number.isFinite()

- Syntax: 

Number.isFinite(value)

- Description: Returns 'true' if the value is a finite number, otherwise returns 'false'.

- Example:

let result = Number.isFinite(42);
console.log(result); // Output: true

5. Number.isInteger()

- Syntax: 

Number.isInteger(value)

- Description: Returns 'true' if the value is an integer, otherwise returns 'false'.

- Example:

let result = Number.isInteger(42.5);
console.log(result); // Output: false

6. Number.isSafeInteger()

- Syntax: 

Number.isSafeInteger(value)

- Description: Returns 'true' if the value is a safe integer (within the range of -(2^53 - 1) to 2^53 - 1), otherwise returns 'false'.

- Example:

let result = Number.isSafeInteger(9007199254740992);
console.log(result); // Output: false

7. Number.MAX_SAFE_INTEGER

- Description: Returns the largest safe integer in JavaScript (2^53 - 1).

8. Number.MIN_SAFE_INTEGER

- Description: Returns the smallest safe integer in JavaScript (-(2^53 - 1)).

These methods and properties provided by the 'Number' object are helpful for performing various checks and operations on numerical values in JavaScript.