Salesforce JavaScript-Developer-I real exam prep : Salesforce Certified JavaScript Developer (JS-Dev-101)

  • Exam Code: JavaScript-Developer-I
  • Exam Name: Salesforce Certified JavaScript Developer (JS-Dev-101)
  • Updated: Jul 30, 2026
  • Q&As: 149 Questions and Answers

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Salesforce JavaScript-Developer-I Value Pack (Frequently Bought Together)

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Value Pack Total: $179.97  $79.99

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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).

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.

For more info read reference:

Salesforce JavaScript-Developer-I Certification leaning site Salesforce JavaScript-Developer-Is Certification resources

Reference: https://trailheadacademy.salesforce.com/certificate/exam-javascript-dev---JS-Dev-101

What is the duration, language, and format of Salesforce JavaScript-Developer-I Exam

  • Passing score 65%
  • There is a time limit of 105 minutes for the exam.
  • This exam is offered in only English.
  • This exam consists of 60 questions
  • The type of questions is Multiple Choice and situation-based questions.

Salesforce JavaScript-Developer-I Exam Syllabus Topics:

SectionWeightObjectives
Browsers and Events17%- Browser APIs and Web Storage
- Event handling, propagation, and delegation
- Window and document object properties
- Document Object Model (DOM) manipulation
- Script loading and execution order
Variables, Types, and Collections23%- Working with strings, numbers, dates, and booleans
- Array methods and data manipulation
- Truthy and falsy values
- JSON parsing and usage
- Variable declaration and initialization
- Type coercion and conversion rules
Asynchronous Programming13%- Async/await syntax
- Callbacks and callback hell
- Event loop and micro/macro tasks
- Fetch API and HTTP requests
- Promises and chaining
Server-Side JavaScript8%- Node.js fundamentals and runtime
- Command-line tools and scripts
- Core Node.js modules
- Module system and require/import
Objects, Functions, and Classes25%- Decorators and advanced function patterns
- Closures and execution context
- Modules and imports/exports
- Object creation, properties, and methods
- Class syntax, inheritance, and prototypes
- Function definitions, parameters, and scope
Testing7%- Unit testing concepts
- Test doubles and mocks
- Testing frameworks and assertions
- Code coverage and best practices
Debugging and Error Handling7%- Debugging tools and breakpoints
- Defensive programming practices
- Error types and exception handling
- Console methods and logging

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