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Lodash _.invert() Method - GeeksforGeeks

Last Updated : 03 Nov, 2023

Lodash _.invert() method is used to return the copy of an object where the object key is converted into value and object value is converted into the key. If the object contains duplicate values, subsequent values overwrite property assignments.

_.invert(object);

• object: This parameter holds the object to invert.

This method returns the new inverted object.

Example 1: In this example, we are inverting the given object with the help of the lodash _.invert() method.

// Requiring the lodash library  
const _ = require("lodash");

// Given object
let obj = { 'a': 1, 'b': 2, 'c': 3 };

// Use of _.invert method 
console.log(_.invert(obj)); 

Output:

{ '1': 'a', '2': 'b', '3': 'c'}

Example 2: In this example, we are inverting the given object with the help of the lodash _.invert() method. as b and c both have the same value that's why it will only add the last key which is c.

// Requiring the lodash library  
const _ = require("lodash");

// Given object
let obj = { 'a': 1, 'b': 2, 'c': 2 };

// Use of _.invert method 
console.log(_.invert(obj)); 

Output:

{ '1': 'a', '2': 'c' }

Example 3: In this example, we are inverting the given object with the help of the lodash _.invert() method.

/// Requiring the lodash library  
const _ = require("lodash");

// Given object
let obj = {
    Name: "GeeksforGeeks",
    password: "gfg@1234",
    username: "your_geeks"
}

// Use of _.invert method 
console.log(_.invert(obj));

Output:

{GeeksforGeeks: "Name", 
gfg@1234: "password",
your_geeks: "username"}

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