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JavaScript BigInt Reference

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JavaScript BigInt is an inbuilt object in JavaScript that provides a way to represent whole numbers larger than 253-1 which is the largest number that can represent with the Number primitive. It is represented by the MAX_SAFE_INTEGER constant.

Example: This example creates a BigInt by appending n at the end of the number.


// Decimal format
let bigNum = 123422222222222222222222222222222222222n
// Hexadecimal format
let bigHex = 0x1ffffffeeeeeeeeefn
// Binary format
let bigBin = 0b1010101001010101001111111111111111n


VM41:6 36893488074118328047n
VM41:10 11430854655n

The complete methods of the JavaScript BigInt object are listed below:

JavaScript BigInt Constructor: A constructor gets called when an object is created using the new keyword.

Constructor Descriptions Example
BigInt() Convert any primitive data type or object to a BigInt data type.

JavaScript BigInt Properties: A JavaScript property is a member of an object that associates a key with a value.

  • Instance Property: An instance property is a property that has a new copy for every new instance of the class.
Instance Properties Descriptions Example
constructor Return the bigInt constructor function for the object.

JavaScript BigInt Methods: Methods are actions that can be performed on objects.

  • Static Method: If the method is called using the BigInt class itself then it is called a static method of BigInt.
Static Methods Descriptions Example
asIntN() Wrap a BigInt value to a signed integer between -2width-1 and 2width-1-1.
asUintN() Wrap a BigInt value to an unsigned integer between 0 and 2width-1.
  • Instance Method: If the method is called on an instance of a number then it is called an instance method.
Instance Methods Descriptions Example
toLocaleString() Return a string with a language-sensitive representation of this BigInt.
toString() Return a string representing the specified BigInt object.
valueOf() Return the wrapped primitive value of a BigInt object.
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Last Updated : 23 May, 2023
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