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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
Number
object it belongs to.
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