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The Number.EPSILON property represents the difference between one and the smallest value greater than one that can be represented as a Number.
You do not have to create a Number object to access this static property (use Number.EPSILON).
Property attributes of Number.EPSILON |
|
|---|---|
| Writable | no |
| Enumerable | no |
| Configurable | no |
Description
The EPSILON property has a value of approximately 2.2204460492503130808472633361816E-16, or 2-52.
Examples
Testing equality
x = 0.2; y = 0.3; z = 0.1; equal = (Math.abs(x - y + z) < Number.EPSILON);
Specifications
| Specification | Status | Comment |
|---|---|---|
| ECMAScript 2015 (6th Edition, ECMA-262) The definition of 'Number.EPSILON' in that specification. |
Standard | Initial definition. |
| ECMAScript 2017 Draft (ECMA-262) The definition of 'Number.EPSILON' in that specification. |
Draft |
Browser compatibility
| Feature | Chrome | Firefox (Gecko) | Internet Explorer | Opera | Safari |
|---|---|---|---|---|---|
| Basic support | (Yes) | 25.0 (25.0) | No support | (Yes) | 9 |
| Feature | Android | Chrome for Android | Firefox Mobile (Gecko) | IE Mobile | Opera Mobile | Safari Mobile |
|---|---|---|---|---|---|---|
| Basic support | No support | No support | 25.0 (25.0) | No support | No support | 9 |
See also
- The
Numberobject it belongs to.