Underscore.js _.dec() Method

The _.dec() method returns the result by decrementing the given value by 1.

Syntax:

_.dec( value );

Parameters: This method takes a value and decrements them.

Return Value: This method returns the result by decrementing the given value by 1.

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

Example 1: 

Javascript

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

var val = 33
var decrVal  = _.dec( val );

console.log("The Given value is :", val);
console.log("The Decrement of Given value is :", decrVal);

Output:

The Given value is : 33
The Decrement of Given value is : 32

Example 2:

Javascript

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

var val = 100
var decrVal  = _.dec( val );

console.log("The Given value is :", val);
console.log("The Decrement of Given value is :", decrVal);

Output:

The Given value is : 100
The Decrement of Given value is : 99