The Boolean()
constructor is used to create Boolean
objects.
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Syntax
new Boolean([value])
Parameters
value
Optional- The initial value of the
Boolean
object.
Examples
Creating Boolean
objects with an initial value of false
var bNoParam = new Boolean(); var bZero = new Boolean(0); var bNull = new Boolean(null); var bEmptyString = new Boolean(''); var bfalse = new Boolean(false);
Creating Boolean
objects with an initial value of true
var btrue = new Boolean(true); var btrueString = new Boolean('true'); var bfalseString = new Boolean('false'); var bSuLin = new Boolean('Su Lin'); var bArrayProto = new Boolean([]); var bObjProto = new Boolean({});
Specifications
Specification |
---|
ECMAScript (ECMA-262) The definition of 'Boolean constructor' in that specification. |
Browser compatibility
The compatibility table on this page is generated from structured data. If you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request.
Desktop | Mobile | Server | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Boolean() constructor | Chrome Full support 1 | Edge Full support 12 | Firefox Full support 1 | IE Full support 3 | Opera Full support 4 | Safari Full support 1 | WebView Android Full support 1 | Chrome Android Full support 18 | Firefox Android Full support 4 | Opera Android Full support 10.1 | Safari iOS Full support 1 | Samsung Internet Android Full support 1.0 | nodejs Full support 0.1.100 |
Legend
- Full support
- Full support