JavaScript Boolean()
Description
The Boolean()
method returns a boolean.
See Also:
Syntax
Boolean(value)
Parameters
Parameter | Description |
value | Optional Default value is false |
Return Value
Type | Description |
Boolean | true or false |
More Examples
Create Booleans
let b1 = Boolean(0);
let b2 = Boolean(1);
let b3 = Boolean(false);
let b4 = Boolean(true);
Try it Yourself »
Everything With a value is True
100 is true
3.14 is true
-15 is true
"Hello" is true
"false" is true
(7 + 1 + 3.14) is true
Try it Yourself »
Everything Without a value is False
0 is false
-0 is false
"" is false
undefined is false
null is false
false is false
NaN is false
Try it Yourself »
Browser Support
Boolean()
is an ECMAScript1 (JavaScript 1997) feature.
It is supported in all browsers:
Chrome | Edge | Firefox | Safari | Opera | IE |
Yes | Yes | Yes | Yes | Yes | Yes |