Lodash _.toPairsIn() Method

Last Updated : 13 Nov, 2023

Lodash _.toPairsIn() method is used to create an array of own and inherited enumerable string key-value pairs for an object which can be consumed by the _.fromPairs() function. If an object is a map or set, its entries are returned.

Syntax:

_.toPairsIn(object);

Parameters:

  • object: This parameter holds the object to query.

Return Value:

This method returns the array of key-value pairs.

Example 1: In this example, we are getting the key and value pair of the given function by the use of the lodash _.toPairsIn() method.

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

function Fb() {
    this.id = 2045;
    this.username = 'fb_myself';
    this.password = 'fb1234';
}

Fb.prototype.email = 'myself@gmail.com';

// Use of _.toPairsIn() method 
console.log(_.toPairsIn(new Fb));

Output:

[
  [ 'id', 2045 ],
  [ 'username', 'fb_myself' ],
  [ 'password', 'fb1234' ],
  [ 'email', 'myself@gmail.com' ]
]

Example 2: In this example, we are getting the key and value pair of the given function by the use of the lodash _.toPairsIn() method.

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

function Gfg() {
    this.x = 1;
    this.y = 2;
}

Gfg.prototype.z = 3;

// Use of _.toPairsIn() method 
console.log(_.toPairsIn(new Gfg));

Output:

[ ['x', 1], ['y', 2], ['z', 3] ]

Example 3: In this example, we are getting the key and value pair of the given object by the use of the lodash _.toPairsIn() method.

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

let GfG = {
    "Geek": "GFG"
}
// Use of _.toPairsIn() method 
console.log(_.toPairsIn(GfG));

Output:

[ [ 'Geek', 'GFG' ] ]
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