The _.functionalize() method takes a function (one which uses this) and pushes this into the argument list. The returned function uses its first argument as the receiver/context of the original function, and the rest of the arguments are used as the original’s entire argument list.
Syntax:
_.functionalize( function )
Parameters: This method takes a function that uses this.
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:
// Defining underscore contrib variable var _ = require( 'underscore-contrib' );
function get(g) {
return this [g];
} var geekFunc = _.functionalize(get);
var geeks = {
GeeksforGeeks: "Computer Science Portal for Geeks"
}; console.log(geekFunc(geeks, "GeeksforGeeks" ))
|
Output:
Computer Science Portal for Geeks
Example 2:
// Defining underscore contrib variable var _ = require( 'underscore-contrib' );
function get(g) {
return this [g];
} var geekFunc = _.functionalize(get);
var geeks = {
GeeksforGeeks: 1000000
}; console.log(geekFunc(geeks, "GeeksforGeeks" ))
|
Output:
1000000