Lodash is a JavaScript library that works on the top of underscore.js. Lodash helps in working with arrays, collection, strings, lang, function, objects, numbers etc.
The _.setWith() method is similar to _.set() method except that it accepts customizer which is invoked to produce the objects of path. And if the customizer returns undefined path creation is handled by the method instead.
Syntax:
_.setWith(object, path, value, customizer)
Parameters: This method accepts four parameters as mentioned above and described below:
- object: It is the function which modifies the object.
- path: It sets the path of the property.
- value: It is used to set the values.
- customizer: It is the function to customize the assigned values.
Return Value: This method returns the object.
Example 1: Here, const _ = require(‘lodash’) is used to import the lodash library in the file.
javascript
// Requiring the lodash library const _ = require("lodash");        // Original array var object = {};   // Using the _.setWith() method let st_elem = _.setWith(object,         '[0][3]', 'd', Object);   // Printing the output console.log(st_elem); |
Output:
{ '0': { '3': 'd' } }
Example 2:
javascript
// Requiring the lodash library const _ = require("lodash");        // Original array var object = {};   // Using the _.setWith() method let st_elem = _.setWith(object,     '[0][1][2]', 'a', Object);   // Printing the output console.log(st_elem); |
Output:
{ '0': {'1': { '2': 'a' } } }
Note: This code will not work in normal JavaScript because it requires the library lodash to be installed.
