The Salesforce JavaScript Developer I certification, introduced in 2020, is an excellent way to demonstrate experience developing with one of the most popular web programming languages. JavaScript developers work with front-end and back-end development and even related technologies like Salesforce’s Lightning web components. This credential is a great way to further your development career.

Tips and secrets to obtain the Salesforce JavaScript Developer I Certification 

The JavaScript Developer I certification includes a multiple-choice exam that validates core JavaScript development skills. A huge benefit of the Lightning web component programming model is that developers write standard JavaScript. Passing the JavaScript Developer I exam demonstrates that you have the standard JavaScript fundamentals required to develop Lightning web components.

To learn more about this certification, we spoke with two developers from our team in Paraguay: Laura S. and David N.  They both decided to complete the certification to refresh their knowledge in Javascript and to demonstrate their abilities.  They both work closely with Lightning web components and wanted to expand their knowledge of JavaScript to help with that work.

The certification consists of two parts: the Lightning Web Components Specialist Superbadge and the JavaScript Developer I multiple-choice exam. These two parts can be accomplished in any sequence. Laura and David found that it can take approximately four weeks to finish the trail mix and study for the certification. But it all depends on the hours of study you dedicate to it.

The exam is structured around 7 main topics

Laura and David agreed that the most difficult topics are variables, types, and collections. Specifically about the types of data that Javascript handles since each one has its own methods. And, among the easiest topics to understand is asynchronous programming.  In the exam, they give you scenarios and ask you to apply asynchronous programming concepts like using event loop and event monitor or determining loop outcomes.

David considers understanding Javascript testing functions one of the more interesting topics. Other programming languages required additional libraries to do unit tests, while Javascript has built-in test functions. Laura considers server JavaScript (Node.​​js) more interesting. There are many languages that can be used ​​for developing on the server-side, but she prefers JavaScript.

Oktana’s training team was very helpful to Laura and David. The team guided them from the beginning through to obtaining the certification. They gave them access to platforms like Focus on Force and Udemy, where they could practice until they felt ready to take the exam.

Why do we recommend this certification?

There are many reasons to want a certification like this. For some, it’s a way to advance their career. For others, it’s an opportunity to structure and strengthen their knowledge of the language.  

In David’s case, he works front-end and handles web components, so having a deeper understanding of JavaScript helps a lot. Also, it helps you as a tool in some types of projects. For example, in the projects that you carry out for Salesforce, in which you have to modify some component, that work is 100% Javascript. Additionally, it helps to learn new elements that you were not exposed to before, and that are not very commonly taught in the certificates. There is always more than one way to solve problems, the certification helps you to discover new functions and approaches that can make your work easier. Finally, Javascript runs better in browsers, so it is the most logical thing to learn. It is very useful!

Laura and David highly recommend this certification and they believe  all developers should obtain it. It’s also a great way to learn more about Salesforce.

Certification preparation resources 


What are you waiting for? Start preparing for this certification. Also, if you are interested in other Salesforce certifications, our team strongly suggests following the Salesforce Platform Developer I.

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