Lodash _.prototype.at() Method

Lodash is a JavaScript library that works on the top of underscore.js. Lodash helps in working with arrays, strings, objects, numbers, etc.

The _.prototype.at([paths]) method of Sequence in lodash is the wrapper version of _.at() method which creates an array of values analogous to the specified paths of an object.

Syntax:

_.prototype.at([paths])

Parameters: This method accepts a single parameter as described below:

• [paths]: It is the paths property which is to be chosen.

Return Value: This method returns the new lodash wrapper instance.

Example 1:

Javascript

// Requiring lodash library
const _ = require('lodash');

// Creating an object variable
var obj = { 'x': [{ 'y': { 'z': 5 } }, 6] };

// Calling at() method
let result = _(obj).at(['x[0].y.z', 'x[1]']).value();

// Displays output
console.log(result);

Output:

[ 5, 6 ]

Example 2:

Javascript

// Requiring lodash library
const _ = require('lodash');

// Creating an object variable
var obj = { 'Geeks': [{ 'for': { 'Geeks': 5 } }, 13] };

// Calling at() method with its parameter
let result = _(obj).at(['Geeks[0].for.Geeks',
            'Geeks[1]']).value();

// Displays output
console.log(result);

Output:

[ 5, 13 ]

Example 3:

Javascript

// Requiring lodash library
const _ = require('lodash');

// Calling at() method with its parameter
let res = _({ 'b': { 'c': 33 } })
            .at(['b.c']).value();

// Displays output
console.log(res);

Output:

[ 33 ]

Reference: https://lodash.com/docs/4.17.15#prototype-at