Lodash - negate method

Syntax

_.negate(predicate)

Creates a function that negates the result of the predicate func. The func predicate is invoked with the this binding and arguments of the created function.

Arguments

• predicate (Function) − The predicate to negate.

Output

• (Function) − Returns the new negated function.

Example

var _ = require('lodash');

function isEven(n) {
   return n % 2 == 0;
}
 
console.log(_.filter([1, 2, 3, 4, 5, 6], _.negate(isEven)));

Save the above program in tester.js. Run the following command to execute this program.

Command

\>node tester.js

Output

[ 1, 3, 5 ]