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.
Living Standard  

Browser compatibility

FeatureChromeEdgeFirefoxInternet ExplorerOperaSafari
Basic support Yes Yes Yes Yes Yes Yes
FeatureAndroid webviewChrome for AndroidEdge mobileFirefox for AndroidIE mobileOpera AndroidiOS Safari
Basic support Yes Yes Yes Yes Yes Yes Yes

See also

Document Tags and Contributors

 Last updated by: fscholz,