The valueOf() method returns the primitive value of a Boolean object.
Syntax
bool.valueOf()Return value
The primitive value of the given Boolean object
Description
The valueOf method of Boolean returns the primitive value of a Boolean object or literal Boolean as a Boolean data type.
This method is usually called internally by JavaScript and not explicitly in code.
Examples
Using valueOf
x = new Boolean(); myVar = x.valueOf(); // assigns false to myVar
Specifications
| Specification | Status | Comment |
|---|---|---|
| ECMAScript 1st Edition (ECMA-262) | Standard | Initial definition. Implemented in JavaScript 1.1. |
| ECMAScript 5.1 (ECMA-262) The definition of 'Boolean.prototype.valueOf' in that specification. |
Standard | |
| ECMAScript 2015 (6th Edition, ECMA-262) The definition of 'Boolean.prototype.valueOf' in that specification. |
Standard | |
| ECMAScript Latest Draft (ECMA-262) The definition of 'Boolean.prototype.valueOf' in that specification. |
Draft |
Browser compatibility
| Feature | Chrome | Edge | Firefox (Gecko) | Internet Explorer | Opera | Safari |
|---|---|---|---|---|---|---|
| Basic support | (Yes) | (Yes) | (Yes) | (Yes) | (Yes) | (Yes) |
| Feature | Android | Chrome for Android | Edge | Firefox Mobile (Gecko) | IE Mobile | Opera Mobile | Safari Mobile |
|---|---|---|---|---|---|---|---|
| Basic support | (Yes) | (Yes) | (Yes) | (Yes) | (Yes) | (Yes) | (Yes) |
See also
Document Tags and Contributors
Tags:
Contributors to this page:
jameshkramer,
eduardoboucas,
fscholz,
Mingun,
Sheppy,
evilpie,
Yuichirou,
Thammi,
Maian,
Marcoos,
Dria
Last updated by:
jameshkramer,