mathjs/docs/reference/functions/boolean.md

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Function boolean #

Create a boolean or convert a string or number to a boolean. In case of a number, true is returned for non-zero numbers, and false in case of zero. Strings can be 'true' or 'false', or can contain a number. When value is a matrix, all elements will be converted to boolean.

Syntax #

math.boolean(x)

Parameters #

Parameter	Type	Description
value	string | number | boolean | Array | Matrix | null	A value of any type

Returns #

Type	Description
boolean | Array | Matrix	The boolean value

Throws #

Type	Description

Examples #

math.boolean(0)     // returns false
math.boolean(1)     // returns true
math.boolean(-3)     // returns true
math.boolean('true')     // returns true
math.boolean('false')     // returns false
math.boolean([1, 0, 1, 1])     // returns [true, false, true, true]

See also #

bignumber, complex, index, matrix, string, unit