The Lodash _.falsey() method checks whether the given value is falsey or not and returns the corresponding boolean value. A falsey value is one that means false in a boolean context.
Syntax:
_.falsey( value );
Parameters: This method accepts single parameter as mentioned above and described below:
- value: Given value is to be checked for falsey value.
Return Value: This method returns a Boolean value true if the given value is falsey, 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 underscore lodash variable var _ = require('lodash-contrib');
var bool = _.falsey(false);
console.log("Given Value is Falsey : ", bool);
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Output:
Given Value is Falsey : true
Example 2:
Javascript
// Defining underscore lodash variable var _ = require('lodash-contrib');
var bool = _.falsey(10);
console.log("Given Value is Falsey : ", bool);
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Output:
Given Value is Falsey : false
Example 3:
Javascript
// Defining underscore lodash variable var _ = require('lodash-contrib');
var bool = _.falsey([ 1, 2, 3 ]);
console.log("Given Value is Falsey : ", bool);
var bool = _.falsey({});
console.log("Given Value is Falsey : ", bool);
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Output:
Given Value is Falsey : false Given Value is Falsey : false
Example 4:
Javascript
// Defining underscore lodash variable var _ = require('lodash-contrib');
var bool = _.falsey(false);
console.log("Given Value is Falsey : ", bool);
var bool = _.falsey("false");
console.log("Given Value is Falsey : ", bool);
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Output:
Given Value is Falsey : true Given Value is Falsey : false