JavaScript BigInt

BigInt is a new data type that allows you to work with integers larger than Number.MAX_SAFE_INTEGER, which is the largest number that can be represented with the number data type.

To create a BigInt, you can append the letter n to the end of an integer or use the BigInt() constructor

const bigNumber = 1234567890123456789012345678901234567890n;
const anotherBigNumber = BigInt(1234567890123456789012345678901234567890);

BigInt can be used with mathematical operators and functions like any other number type. However, you cannot mix BigInt and regular number types in the same operation

const bigNumber = 1234567890123456789012345678901234567890n;
const regularNumber = 123;

// This will result in an error
const result = bigNumber + regularNumber;

You can convert a BigInt to a regular number using the Number() function, but be aware that this can cause precision loss if the BigInt is larger than Number.MAX_SAFE_INTEGER

const bigNumber = 1234567890123456789012345678901234567890n;
const regularNumber = Number(bigNumber); // This will cause precision loss

BigInt can also be used with some built-in functions like parseInt() and JSON.stringify(), but not all functions and libraries support BigInt yet.

BigInt is a useful addition to JavaScript that allows you to work with integers larger than Number.MAX_SAFE_INTEGER. While it has some limitations and requires careful handling, it provides a powerful tool for working with large numbers in JavaScript.