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Last Updated: Jul 25, 2026
No. of Questions: 149 Questions & Answers with Testing Engine
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Salesforce JavaScript Developer I Certification Path
You must get an idea of exactly what this certification is, before investing your valuable time, effort, or money in Salesforce. The demand and the need for Salesforce certified professionals are rapidly growing and so Salesforce JavaScript Developer I Certification is becoming more and more popular. Different types of online training sessions are provided such as Intellipaat 's online training sessions for the Salesforce JavaScript Developer I Qualification . It is instructor-led teaching by subject professionals working in major organizations. This style of training includes live sessions with the teacher, along with a forum where you can clear all your course-based doubts.
Self-paced sessions are also offered. This training mode involves pre-recorded video sessions. You can conveniently return to these talks and revisit the subjects you have skipped whether you have any difficulties with the lectures or have difficulty keeping up with the online meetings. You will also use these sessions to finish your exercise at your speed while you access these online lessons throughout your life.
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How much Salesforce JavaScript-Developer-I Exam Cost
The price of the Salesforce JavaScript Developer I certification is $200 USD, for more information related to the Salesforce JavaScript-Developer-I Exam please visit Salesforce website.
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How to Study the Salesforce JavaScript-Developer-I Exam
The best study material one can get is the JavaScript-Developer-I practice exam dumps. To ensure good grades, do attempt the JavaScript-Developer-I practice exams. The JavaScript Developer I from Salesforce typically has 1-2 years of experience as a JavaScript developer with the following JavaScript topics.
Control of Mistake
Functions (more functions in higher order)
Monitor (agnostic platform)
Strings
Scope of Variables
Modules
Asynchronous Programming
Item Model Document
Discharge
Objects & Arrays: Data Structures
Activities
JavaScript on the backend
Classes
Forms of data and operators
Conversion type (inclusive versus explicit)
To prepare for this test, we advise a combination of practical experience, completion of training courses, pathways and self-study in the areas listed in the examination outline section of this examination guide.
Benefits in Obtaining Salesforce JavaScript-Developer-I Certification
With the introduction of the Lightning Experience by Salesforce, it is possible to develop cool, looking applications for a wide range of tasks. Admins have been able to create beautiful pages for their objects more than ever, with an interface entirely tailored for each user.For developers, the same application has never before been possible for Salesforce developers to create applications that stretch well beyond Salesforce's declarative features. It's all achieved with the use of a JavaScript application for Lightning & Lightning Web components.
The certification for JavaScript Developer I has just been released and fills a large gap in the certification list for Salesforce. Salesforce Developers who want to prove their Lightning skills, but also new entrants into the Salesforce community, are certified to demonstrate that they know what is relevant. A typical Salesforce 60 multi-choice test is split into two parts and is influenced by a super badge (Similar to Developer II certification).
Reference: https://trailheadacademy.salesforce.com/certificate/exam-javascript-dev---JS-Dev-101
Salesforce JavaScript-Developer-I Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Browsers and Events | 17% | - Event handling, propagation, and delegation - Script loading and execution order - Browser APIs and Web Storage - Window and document object properties - Document Object Model (DOM) manipulation |
| Topic 2: Asynchronous Programming | 13% | - Callbacks and callback hell - Fetch API and HTTP requests - Event loop and micro/macro tasks - Async/await syntax - Promises and chaining |
| Topic 3: Objects, Functions, and Classes | 25% | - Object creation, properties, and methods - Closures and execution context - Function definitions, parameters, and scope - Class syntax, inheritance, and prototypes - Modules and imports/exports - Decorators and advanced function patterns |
| Topic 4: Server-Side JavaScript | 8% | - Node.js fundamentals and runtime - Core Node.js modules - Command-line tools and scripts - Module system and require/import |
| Topic 5: Testing | 7% | - Testing frameworks and assertions - Unit testing concepts - Test doubles and mocks - Code coverage and best practices |
| Topic 6: Variables, Types, and Collections | 23% | - Type coercion and conversion rules - Working with strings, numbers, dates, and booleans - Variable declaration and initialization - Array methods and data manipulation - Truthy and falsy values - JSON parsing and usage |
| Topic 7: Debugging and Error Handling | 7% | - Debugging tools and breakpoints - Error types and exception handling - Console methods and logging - Defensive programming practices |
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