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Salesforce Javascript Developer I ✓ Updated May 2026

Salesforce Certification Preparation for Salesforce JavaScript Developer I

Exam Code: CRT-600
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About the CRT-600 Exam

The Salesforce CRT-600 exam, officially titled Salesforce Certified JavaScript Developer I, is a specialized certification designed to validate a candidate's proficiency in JavaScript within the Salesforce ecosystem. This exam focuses on core JavaScript concepts, including variables, functions, objects, and asynchronous programming, as well as how these skills apply to Lightning Web Components and Aura components. By earning this certification, developers demonstrate their ability to build robust, scalable applications on the Salesforce platform, leveraging modern JavaScript standards like ES6+. The CRT-600 is essential for professionals seeking to enhance their career in Salesforce development, as it bridges the gap between traditional Salesforce development and modern front-end engineering.

This certification is particularly valuable for developers working with Salesforce's Lightning Experience, where JavaScript is integral to creating dynamic user interfaces. The exam covers a range of topics, from basic syntax and data types to more advanced concepts like promises, callbacks, and the event loop. Real-world use cases include customizing Salesforce pages with Lightning Web Components, integrating third-party APIs, and optimizing performance through efficient JavaScript coding. By mastering these skills, certified professionals can improve user experiences and streamline business processes, making them indispensable assets to their organizations.

The CRT-600 exam consists of 60 multiple-choice questions, which must be completed within 105 minutes, and a passing score of 65% is required. It is a proctored exam, ensuring the integrity of the certification process. Salesforce recommends that candidates have at least six months of JavaScript experience, along with familiarity with Salesforce's development environment. This certification is part of Salesforce's broader commitment to empowering developers with modern skills, and it aligns with industry trends toward full-stack development. By passing the CRT-600, you join a community of skilled professionals who are driving innovation on the world's leading CRM platform.

Who Should Take the CRT-600 Exam?

The CRT-600 exam is ideal for front-end developers, JavaScript developers, and Salesforce developers who have at least six months of hands-on experience with JavaScript. It is also suitable for IT professionals transitioning into Salesforce development, such as web developers or full-stack engineers, who want to validate their skills on the Salesforce platform. No formal prerequisites are required, but familiarity with Salesforce's development environment, including Lightning Web Components, is highly recommended.

Topics Covered in CRT-600

📊
JavaScript Basics: Variables, Data Types, and Operators
📜
Functions and Scope: Closures, Hoisting, and Arrow Functions
💡
Objects, Arrays, and Destructuring
🛡️
Asynchronous Programming: Promises, Async/Await, and Callbacks
🏗️
ES6+ Features: Modules, Classes, and Template Literals
🔧
DOM Manipulation and Event Handling
⚖️
Error Handling and Debugging in JavaScript
🎯
Salesforce Lightning Web Components and Aura Components

Preparation Tips for CRT-600

Practice writing JavaScript code daily, focusing on ES6+ features like arrow functions, destructuring, and template literals, as these are heavily tested on the CRT-600.
Use Salesforce's official study guide and trailhead modules for JavaScript Developer I to cover all exam topics, including asynchronous programming and error handling.
Take practice exams with 224 questions to simulate the real test environment and identify weak areas, such as promises or closures.
Review the Salesforce documentation for Lightning Web Components and Aura components to understand how JavaScript integrates with the platform.
Join online study groups or forums to discuss tricky concepts like the event loop and hoisting, which are common pain points for candidates.

Frequently Asked Questions — CRT-600

What is the passing score for the CRT-600 exam?

The passing score for the Salesforce CRT-600 exam is 65%. This means you need to answer at least 39 out of 60 multiple-choice questions correctly to earn the JavaScript Developer I certification. The exam is scored immediately after completion, and you will receive a detailed report highlighting your performance in each topic area.

How long does it take to prepare for the CRT-600 exam?

Preparation time varies based on your existing JavaScript experience, but most candidates spend 4-6 weeks studying. If you have at least six months of JavaScript experience, you may need less time. Focus on hands-on coding and practice exams, such as the 224-question set, to reinforce key concepts like asynchronous programming and ES6+ features.

Are there any prerequisites for the CRT-600 exam?

There are no formal prerequisites for the CRT-600 exam, but Salesforce recommends at least six months of JavaScript experience. Familiarity with Salesforce's development environment, including Lightning Web Components, is also beneficial but not required. The exam is designed for developers who can demonstrate practical JavaScript skills in a Salesforce context.

How many questions are in the ExamsTree CRT-600 study guide?
The ExamsTree CRT-600 PDF study guide contains 224+ practice questions with detailed answer explanations, all mapped to the official Salesforce exam objectives.

Why Choose ExamsTree?

ExamsTree CRT-600 Study Guide is developed by experienced certification professionals with deep knowledge of Salesforce technologies. Our team thoroughly researches each exam domain to provide comprehensive, accurate coverage.

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Exam Details
Vendor Salesforce
Questions 224+
Format PDF
Updated 5/24/2026
Cert Javascript Developer I
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