Underscore.js _.methodize() Method

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The _.methodize() method takes a function and pulls the first argument out of the argument list and into this position. The returned function calls the original with its receiver (this) prepending the argument list.

Syntax:

_.methodize( function );

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

function: original function containing arguments.

Return Value: This method returns a function.

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');  
  
function gfgFunc (obj) { 
    return obj.name + ": " + obj.about; 
} 
  
var Geeks = { 
    name: "zambiatek", 
    about: "Computer Science Portal for Geeks", 
    fun: _.methodize(gfgFunc) 
}; 
  
console.log(Geeks.fun())

Output:

zambiatek: Computer Science Portal for Geeks

Example 2:

Javascript

// Defining underscore contrib variable 
var _ = require('underscore-contrib');  
  
function gfgFunc (obj) { 
    return "Geeks"; 
} 
  
fun= _.methodize(gfgFunc) 
console.log(fun())

Output:

Geeks

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