Salesforce Certified JavaScript Developer I

Who can take it

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Salesforce Certified JavaScript Developer I Eligibility

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Whether you can sit the Salesforce Certified JavaScript Developer I certification exam: prerequisites, who the exam is for, and the skills it assesses.

2 prerequisites
associate level
4 skills

Prerequisites and requirements

Published requirements for this certification.

  • Strong foundation in HTML/CSS
  • Basic understanding of web architecture

Who this exam is for

Professional developers, Salesforce developers looking to specialize in Lightning Web Components, and web developers transitioning into the Salesforce ecosystem.

Skills assessed

What the exam actually tests, beyond the domain names.

ES6+ Syntax proficiency
Asynchronous flow management
DOM manipulation
Debugging and error resilience

The domains you will be assessed on

Eligibility is not only about paperwork. These are the areas you have to actually know.

DomainWeightTopic count
Testing7%3
Browsers and Events17%5
Server-side JavaScript8%3
Asynchronous Programming13%5
Debugging and Error Handling7%4
Objects, Functions, and Classes25%5
Variables, Types, and Collections23%5

How demanding this exam is

Cognitive load
High: Requires deep understanding of execution context, closures, and asynchronous flow control.

Our focus for this certification: Validating core language proficiency to ensure developers can build robust components for the Lightning Platform.

More about the Salesforce Certified JavaScript Developer I exam

Explore the rest of this page series: format, cost, difficulty, requirements and how to prepare.

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Frequently asked questions

Everything you need to know about the Salesforce Certified JavaScript Developer I exam.