Salesforce Javascript Developer I Exam Guide

The Salesforce JavaScript Developer I Exam is a comprehensive assessment designed to evaluate the knowledge and skills of individuals working with JavaScript in the Salesforce ecosystem. This exam focuses on core JavaScript concepts, as well as the practical application of JavaScript within the Lightning Component Framework and Lightning Web Components. By successfully passing this exam, candidates can demonstrate their proficiency in developing front-end and back-end JavaScript applications on the Salesforce platform.

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The program overview for the Salesforce JavaScript Developer I certification encompasses both the multiple-choice exam and the Lightning Web Components Specialist superbadge. The multiple-choice exam tests candidates on their understanding of JavaScript fundamentals, while the superbadge assesses their hands-on development skills in building Lightning Web Components. Achieving both credentials automatically grants the Salesforce Certified JavaScript Developer I certification, validating the candidate's expertise in JavaScript development within the Salesforce environment.

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This certification program is ideal for JavaScript developers, Salesforce developers, full-stack developers, and web application developers who want to enhance their skills and specialize in developing JavaScript applications on the Lightning Platform. By earning this certification, professionals can showcase their proficiency in JavaScript development and demonstrate their ability to design, develop, and test performant, maintainable, and reusable solutions using JavaScript and the Lightning Component Framework.

 

Who is it for

The Salesforce Certified JavaScript Developer I certification is designed for individuals who have knowledge and experience in developing front-end and/or back-end JavaScript applications for the web stack. This certification validates core JavaScript skills and hands-on development expertise, specifically focusing on JavaScript technologies like the Lightning Component Framework and Lightning Web Components.

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Candidates for this certification should have 1-2 years of experience as a JavaScript developer and be familiar with JavaScript fundamentals, such as variables, functions, objects, arrays, DOM manipulation, events, error handling, debugging, testing, asynchronous programming, and server-side JavaScript.

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By earning the JavaScript Developer I certification, candidates demonstrate their proficiency in core JavaScript development skills and their ability to utilize JavaScript to develop Lightning web components effectively. This certification is beneficial for JavaScript programmers, Salesforce developers, full-stack developers, and web application developers who work with the Lightning Platform and want to enhance their JavaScript expertise.

 

Key capabilities expected from the candidate include:

Key capabilities expected from candidates pursuing the Salesforce JavaScript Developer I certification include:

1. Proficiency in JavaScript: Candidates should have a strong understanding of JavaScript fundamentals, including data types, variables, operators, functions, control flow, and error handling. They should be able to write clean and efficient JavaScript code and demonstrate knowledge of advanced JavaScript concepts such as modules, classes, and asynchronous programming.

2. Lightning Component Framework: Candidates should be familiar with the Lightning Component Framework and have hands-on experience developing Lightning Web Components. They should understand the architecture and key concepts of the framework and be able to design, develop, and test Lightning Web Components that deliver responsive and interactive user interfaces.

3. Problem-solving and Solution Design: Candidates should possess the ability to analyze business requirements and propose optimal solutions using JavaScript and the Lightning Component Framework. They should be able to identify the most appropriate functions, objects, and classes to implement specific requirements and demonstrate knowledge of JavaScript design patterns and best practices.

4. Debugging and Testing: Candidates should have expertise in debugging JavaScript code and using debugging tools and techniques effectively. They should be able to identify and fix errors, handle exceptions, and ensure the reliability and stability of their JavaScript applications. Additionally, candidates should understand the importance of testing and be proficient in writing unit tests to validate their code.

5. Integration and Server-side JavaScript: Candidates should be familiar with integrating JavaScript applications with other systems and platforms. They should have knowledge of server-side JavaScript using Node.js and be able to leverage Node.js modules and libraries for server-side development. They should also understand package management and be able to select appropriate solutions for managing dependencies.

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By demonstrating these key capabilities, candidates can showcase their expertise in JavaScript development for the Salesforce platform and position themselves as skilled professionals in building web applications using the Lightning Component Framework and Lightning Web Components.

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Purpose of this Exam Guide

The purpose of this Exam Guide is to provide valuable information and guidance to individuals preparing for the Salesforce JavaScript Developer I Multiple-Choice exam. It serves as a comprehensive resource that helps candidates evaluate their readiness and enhance their chances of achieving a passing score. The guide outlines the target audience for the certification exam and offers recommendations for training, documentation, and self-study to support exam preparation.

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Salesforce highly recommends a combination of on-the-job experience, attending training courses, and engaging in self-study to maximize the likelihood of success on the exam. The Exam Guide furnishes candidates with a complete list of exam objectives, enabling them to focus their efforts on specific areas of knowledge and skill development.

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By familiarizing themselves with the Exam Guide, candidates can gain a clear understanding of the exam format, content coverage, and passing criteria. This guide serves as a reference throughout the preparation process, allowing candidates to align their study materials and resources accordingly.

 

About the Exam

The Salesforce JavaScript Developer I exam is designed to evaluate your knowledge and skills in developing front-end and/or back-end JavaScript applications for the web stack. This exam is intended for individuals with 1-2 years of experience in JavaScript development and who are proficient in working with JavaScript-related technologies, including the Lightning Component Framework and Lightning Web Components.

Here are some key details about the exam:

• Content: The exam consists of 60 multiple-choice and multiple-select questions, along with up to five non-scored questions. These questions cover various topics related to JavaScript, including variables, types, and collections; objects, functions, and classes; browser and events; debugging and error handling; asynchronous programming; and server-side JavaScript.

• Time Allotted: You will have 105 minutes to complete the exam. It is important to manage your time effectively to ensure you can thoroughly review and respond to all the questions within the given timeframe.

• Passing Score: To pass the exam and earn the Salesforce Certified JavaScript Developer I certification, you need to achieve a minimum passing score of 65%. This score reflects your proficiency in JavaScript development and your ability to apply JavaScript fundamentals to develop Lightning web components.

• Registration Fee: The registration fee for the exam is USD 200, plus applicable taxes as required per local law. This fee covers the administrative costs associated with the exam registration process.

• Retake Fee: In the event that you do not pass the exam on your first attempt, a retake fee of USD 100, plus applicable taxes, will be applicable for subsequent attempts. It is recommended to thoroughly prepare for the exam to increase your chances of passing on the first try.

• Delivery Options: The exam can be taken either onsite at a designated testing center or in an online proctored environment. Both options provide a secure and reliable testing experience, allowing you to choose the most convenient option for you.

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As you prepare for the Salesforce JavaScript Developer I exam, it is important to familiarize yourself with these exam details. Understanding the exam content, time allocation, passing score, and registration process will contribute to a successful exam experience.

 

Recommended Training and References

To prepare for the Salesforce JavaScript Developer I exam, it is recommended to combine hands-on experience, training courses, self-study, and resources provided by Salesforce. Here are some recommended training options and references:

1. Trailhead: Salesforce Trailhead offers interactive learning paths and modules specifically designed for the JavaScript Developer I exam. Explore the "Prepare for your Salesforce JavaScript Developer I Credential" trailmix, which provides a comprehensive set of resources to help you study and practice for the exam. Additionally, there is a dedicated trail called "Study for the Salesforce JavaScript Developer I Exam" that covers important exam topics in detail.

2. Trailhead Academy: Consider enrolling in expert-led courses offered by Trailhead Academy to further enhance your skills and knowledge. They offer courses that cover JavaScript development, Lightning Component Framework, and Lightning Web Components, which are directly relevant to the exam.

3. JavaScript Documentation: Review the official JavaScript documentation provided by Mozilla Developer Network (MDN). This comprehensive resource covers various JavaScript topics, including fundamentals, error handling, objects, functions, control flow, promises, and more. Familiarize yourself with these concepts to strengthen your understanding of JavaScript.

4. Salesforce Documentation: Access the Salesforce documentation related to Lightning Web Components and the Lightning Component Framework. These resources provide detailed information on developing Lightning web components, handling events, manipulating the DOM, and utilizing browser-specific APIs within the Salesforce ecosystem.

5. Online Resources and Forums: Explore online resources, blogs, and forums dedicated to JavaScript development and Salesforce. Engage with the Salesforce developer community to ask questions, share insights, and gain practical knowledge from experienced professionals.

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By combining these recommended training options and references, you can gain a comprehensive understanding of JavaScript development within the Salesforce context. Hands-on practice, along with studying the recommended materials, will greatly increase your chances of success in the Salesforce JavaScript Developer I exam.

 

Exam Outline

The Salesforce JavaScript Developer I exam measures your knowledge and skills in various areas of JavaScript development. Here is an outline of the exam, including the sections and objectives:

Variables, Types, and Collections (23%):

• Creating variables and initializing them correctly

• Effective utilization of strings, numbers, and dates

• Understanding type coercion and its effects

• Distinguishing truthy or falsey evaluations

• Data manipulation with arrays

• Operating on JSON objects

Objects, Functions, and Classes (25%):

• Choosing the best function implementation for a given requirement

• Implementing objects to solve business requirements

• Implementing classes to solve business requirements

• Working with JavaScript modules

• Utilizing JavaScript decorators

• Analyzing variable scope and execution flow

Browser and Events (17%):

• Utilizing events, event handlers, and event propagation

• Evaluating and manipulating the Document Object Model (DOM)

• Investigating code behavior using browser Dev Tools

• Utilizing browser-specific APIs

Debugging and Error Handling (7%):

• Handling errors properly in JavaScript

• Using the console and breakpoints for debugging

Asynchronous Programming (13%):

• Applying asynchronous programming concepts

• Understanding the event loop and determining loop outcomes

Server Side JavaScript (8%):

• Selecting appropriate Node.js implementations and CLI commands

• Familiarity with core Node.js modules and libraries/frameworks

• Choosing the right Node.js package management solution

Testing (7%):

• Enhancing the effectiveness of unit tests

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It is important to thoroughly study and understand the concepts covered in each section to perform well in the exam. By focusing on these areas and preparing accordingly, you can demonstrate your proficiency in JavaScript development within the Salesforce ecosystem.