JavaScript Number Complete Reference

JavaScript numbers are always stored in double-precision 64-bit binary format IEEE 754. The types of number literals You can use decimal, binary, octal, and hexadecimal.

Syntax:

Number(object)

Javascript

<script>
    function func() {

        // Original string
        var a = true;

        var value = Number(a);
        console.log(value);
    }
    func();
</script>

Output

1

The complete list of JavaScript Numbers is listed below:

JavaScript Number Constructor: In JavaScript, a constructor gets called when an object is created using the new keyword.

Constructor	Description
Number()	Returns the number format for any type of javascript variable.

JavaScript Number Properties: A JavaScript property is a member of an object that associates a key with a value. There are two types of Number properties in JavaScript.

• Static Property: A static property is a property that has the same value for the entire class.

  Static Properties	Description
  EPSILON	Shows the difference between 1 and the smallest floating point number which is greater than 1.
  MAX_SAFE_INTEGER	Represents the minimum safe integer.
  MAX_VALUE	Represent minimum numeric values.
  MIN_SAFE_INTEGER	Represents the minimum safe integer.
  MIN_VALUE	Represent minimum numeric values.
  NaN	Represents a value that is not a valid number.
  NEGATIVE_INFINITY	Represents the largest negative value i.e negative infinity.
  POSITIVE_INFINITY	Represents the largest positive value i.e positive infinity.

• Instance Property: An instance property is a property that has a new copy for every new instance of the class.

  Instance Properties	Description
  constructor	Return the number constructor function for the object.

JavaScript Number Methods: JavaScript methods ar There are e actions that can be performed on objects. There are types of Number methods in JavaScript.

• Static Method: If the method is called using the Number class itself then it is called a static method.

  Static Methods	Description
  isNaN()	Determine whether the passed value is NaN(Not a Number) and is of the type “Number”.
  isFinite()	Check whether the passed value is a finite number or not.
  isInteger()	Returns true if the passed value is an integer, otherwise false.
  isSafeInteger()	Check the provided value is a number that is a safe integer.
  parseFloat()	Accept the string and convert it into a floating-point number.
  parseInt()	Manipulate numbers whether it is negative or positive.

• Instance Method: If the method is called on an instance of a number then it is called an instance method.

  Instance Methods	Description
  toExponential()	Returns a string representing the Number object in exponential notation.
  toFixed()	Format a number using fixed-point notation.
  toLocaleString()	Converts a number into a string, using a local language format.
  toPrecision()	Format a number to a specific precision or length.
  toString()	Return a string representing the specified Number object.
  valueOf()	Return the primitive value of a number.