isFalse()

isFalse(val): boolean

Returns true if the given value is found in a case-insensitive list of "false" values.

False values: ['', '0', 'false', 'nan', 'null', 'undefined']

For a more liberal comparison/coercion to true or false see the converters package (@accelint/converters).

Parameters

val

unknown

Returns

boolean

Remarks

pure function

Example

isFalse('');        // true
isFalse(0);         // true
isFalse(1);         // false
isFalse(true);      // false