BigInt
BigInt values represent integer values which are too high or too low to be represented by the number primitive.
Browser support
| Feature | Desktop | Mobile | ||||
|---|---|---|---|---|---|---|
| Chrome | Edge | Firefox | Safari | Chrome Android | Safari iOS | |
| 67 | 79 | 68 | 14 | 67 | 14 | |
| The BigInt() function returns primitive values of type BigInt. | 67 | 79 | 68 | 14 | 67 | 14 |
| The BigInt.asIntN() static method truncates a BigInt value to the given number of least significant bits and returns that value as a signed integer. | 67 | 79 | 68 | 14 | 67 | 14 |
| The BigInt.asUintN() static method truncates a BigInt value to the given number of least significant bits and returns that value as an unsigned integer. | 67 | 79 | 68 | 14 | 67 | 14 |
| The toString() method of BigInt values returns a string representing the specified BigInt value. The trailing "n" is not part of the string. | 67 | 79 | 68 | 14 | 67 | 14 |
| The valueOf() method of BigInt values returns the wrapped primitive value of a BigInt object. | 67 | 79 | 68 | 14 | 67 | 14 |
Syntax
const big = 9007199254740993n; // Cannot be represented as a Number
const sum = big + 1n; // 9007199254740994n
typeof big; // 'bigint'
// Cannot perform mixed operations with Number
// big + 1; // TypeError
BigInt(42) + big; // OKLive demo
large number. Accurate calculation
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Precisioncomparison(number vs Bigint)
is accurate to and comparison.. with is errordifference that outcalculation, BigInt. with Number
Use cases
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Using BigInt
BigInt values represent integer values which are too high or too low to be represented by the number primitive.
Cautions
- No specific concerns. Stable across all major browsers.
Accessibility
- When updating the DOM dynamically, announce important changes to assistive technology with aria-live regions.