Study Guide

Javascript Developer 1 Study Guide

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9 Lessons


Please be informed that Focus On Force has recently updated this Certification Course to reflect a more modern, stylish and accessible UI.

As you may have observed, we have cleaned up the Main Lesson Page to only show the Main Objectives, Mindmap (also available in Topic pages), and Feedback -- allowing you to have a more clutter-free workspace. We have created separate Topic Pages for each detailed objective which you can access at the left hand side of the page. Upon clicking, you will be presented with the Detailed Objectives under the Section that you have chosen. Additionally, we have put "Topic Progress" indicators which could guide you better on your progress.

For mobile users:
On the Main Course Page, you will see the Lesson Table wherein Percentages and Sections are listed. On the upper right hand side of the table, you will see options to "Expand All" and "Collapse All". If you click on "Expand All", it will give you the option to pick which objective you would like to access.

Javascript Developer 1 - Certification Goal


Take this Course

Variables, Types, and Collections I

Variables, Types, and Collections II

Objects, Functions, and Classes I

Objects, Functions, and Classes II

Browser and Events

Debugging and Error Handling

Asynchronous Programming

Server Side JavaScript



  1. Salesforce Trainee

    In the Object, Function, and Classes exam question set, there is a question that describes the User as a parent class and Buyer as a child class. But in the given code snippet, the User is extending the Buyer class which is the opposite of description.

    1. Ian Focus Team

      Hi, thank you for the feedback. It’s true that User is the parent class, and Buyer is the child class. Please note that the question mentions that the classes in the given code snippet is not working as intended (since User is defined as child and Buyer is defined as parent). The explanation of the answer to that question then describes how the code should be written instead based on the requirement and then provides an example working code at the end. Also, kindly use the Submit Feedback button that is provided in the exam results to submit feedback to a specific question.

  2. Amit Soni

    JavaScript study guide and practice exam was really very helpful. I have passed my certificate exam last week. Thank you for putting this together with all the explanations and examples.

  3. Christoph van Balen

    The study guide and the practice exams are so helpful in directing you to the right resources and depth of what/how much you have to learn. Passed the exam today so I am very greatful for FoF. Thanks to FoF I have passed all my exams on the first go so far. Keep up the good work! Cheers.

    1. Sandeep Focus Team

      Hi Christoph, Congratulations on your success! πŸŽ‰ It’s so inspiring to hear that the our study guide and practice exams were instrumental in helping you pass your exam today. Your dedication to your studies and your willingness to utilize the resources have truly paid off. πŸ† Keep up the excellent work!

    1. Sandeep Focus Team

      Hi Suraj! 🌟 Huge congrats on acing the Javascript Developer 1 exam! πŸŽ‰ Your hard work and dedication totally paid off. The entire FoF team is thrilled to hear about your success with the study guide and practice exams. πŸ“šπŸ’ͺ Keep shining bright!