Underscore.js _.bitwiseLeft() Method

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The _.bitwiseLeft() method returns the result of using the << operator on all the arguments.

Syntax:

_.bitwiseLeft(val1, val2,..., valn);

Parameters: This method returns n values to operate on them.

Return Value: This method returns the result of using the << operator on the arguments.

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 bL  = _.bitwiseLeft( 1, 3 ); 
  
console.log("The bitwiseLeft is :", bL);

Output:

The bitwiseLeft is : 8

Example 2:

Javascript

// Defining underscore contrib variable 
var _ = require('underscore-contrib');  
  
var bL  = _.bitwiseLeft( 1, 3, 2 ); 
  
console.log("The bitwiseLeft is :", bL);

Output:

The bitwiseLeft is : 32

Example 3:

Javascript

// Defining underscore contrib variable 
var _ = require('underscore-contrib');  
  
var bL  = _.bitwiseLeft( 1 ); 
  
console.log("The bitwiseLeft is :", bL);

Output:

The bitwiseLeft is : 1

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