lessThan

The lessThan() method checks whether a number is strictly less (<) than a given threshold. It can be used in a curried way to ease functional composition.

Interactive example

Syntax

Classic signature

function lessThan<
	GenericInput extends number
>(
	input: GenericInput,
	threshold: number
): boolean

Curried signature

function lessThan<
	GenericInput extends number
>(
	threshold: number
): (input: GenericInput) => boolean

Parameters

• input: The number to compare (classic signature only).
• threshold: The comparison threshold.

Return value

returns true if the value is strictly less than the threshold, false otherwise.

See also

• less - Checks whether a number is less than or equal (<=)
• greater - Checks whether a number is greater than or equal (>=)
• greaterThan - Checks whether a number is strictly greater (>)

Sources

• MDN Web Docs - Less than operator