Underscore.js _.negate() Function

Underscore.js is a JavaScript library that provides a lot of useful functions that help in the programming in a big way like the map, filter, invoke, etc even without using any built-in objects.

The _.negate() function is an inbuilt function in Underscore.js library of JavaScript which is used to find a new negated version of the stated predicate function.

Syntax:

_.negate(predicate)

Parameters: It accepts a single parameters which is specified below:

• predicate: It is the stated predicate function.

Return Value: This method returns a new negated version of the stated predicate function.

Example 1:

Output:

undefined

Example 2:

Output:

false
 true

Reference: https://underscorejs.org/#negate