Lodash _.isNegative() Method

The Lodash _.isNegative() method checks whether the given value is a Negative value or not and returns the  corresponding boolean value.

Syntax:

_.isNegative( value );

Parameters: This method takes single parameter as mentioned above and described below:

• value: Given value to be checked for Negative value.

Return Value: This method returns a Boolean value true if the given value is Negative, else false.

Note: This will not work in normal JavaScript because it requires the lodash.js contrib library to be installed. Lodash.js contrib library can be installed using npm install lodash-contrib.

Example 1:

Javascript

// Defining lodash contrib variable
var _ = require('lodash-contrib');

// Checking for _.isNegative() method
console.log("The Value is Negative : " + _.isNegative(-500));

console.log("The Value is Negative : " + _.isNegative(500));

console.log("The Value is Negative : " + _.isNegative('G'));

Output:

The Value is Negative : true
The Value is Negative : false
The Value is Negative : false

Example 2:

Javascript

// Defining lodash contrib variable
var _ = require('lodash-contrib');

// Checking for _.isNegative() method
console.log("The Value is Negative : " + _.isNegative(-10.5));

console.log("The Value is Negative : " + _.isNegative(10.5));

console.log("The Value is Negative : " + _.isNegative({}));

Output:

The Value is Negative : true
The Value is Negative : false
The Value is Negative : false