How To Remove Undefined And Null Values From An Object Using Lodash

Removing undefined and null values from an object can be a common requirement when working with data in programming. One popular library that can help streamline this process is Lodash. In this article, we will walk you through the steps of removing undefined and null values from an object using Lodash.

Step 1: Install Lodash
Before we can start working with Lodash, we need to make sure it is installed in our project. You can easily install Lodash using npm with the following command:

install lodash

Step 2: Import Lodash
Once Lodash is installed, you need to import it into your project. You can do this by adding the following line of code at the top of your file:

_ = require('lodash');

Step 3: Create Your Object
Next, let's create an example object that contains undefined and null values that we want to remove:

const sampleObject = {
  name: 'John Doe',
  age: null,
  city: 'New York',
  job: undefined
};

Step 4: Remove Undefined and Null Values
Now that we have our object with undefined and null values, we can use Lodash to clean it up. The

_.omitBy()

function from Lodash can help us achieve this. Here's how you can use it:

const cleanedObject = _.omitBy(sampleObject, _.isNil);

In the code snippet above, we passed our sampleObject and a custom function

_.isNil

to the

_.omitBy()

function. This function will remove any key-value pairs from the object where the value is either null or undefined.

Step 5: Display the Cleaned Object
To confirm that the undefined and null values have been successfully removed, let's log the cleaned object to the console:

console.log(cleanedObject);

When you run your code, you should see the cleanedObject logged in the console without the properties that had null or undefined values.

Congratulations! You have successfully removed undefined and null values from an object using Lodash. This simple yet powerful technique can help you keep your data clean and organized in your projects.

In conclusion, Lodash provides a convenient way to work with objects and arrays in JavaScript, making tasks like removing undefined and null values a breeze. By following the steps outlined in this article, you can efficiently clean up your data and focus on building amazing applications.