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

JavaScript-Developer-I Exam Simulator
  • Exam Code: JavaScript-Developer-I
  • Exam Name: Salesforce Certified JavaScript Developer (JS-Dev-101)
  • Updated: Aug 10, 2026
  • Q & A: 149 Questions and Answers
  • Salesforce JavaScript-Developer-I Q&A - in .pdf

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About Salesforce JavaScript-Developer-I Exam Simulator

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As Javascript development observed in nearly all organizations, Salesforce JavaScript-Developer-I is the most successful qualification candidates can get on their resume. Professionals have therefore been known to demonstrate concern. But this JavaScript-Developer-I can be very easy to clear if practitioners study with JavaScript-Developer-I exam dumps and then take the JavaScript-Developer-I practice exams. However, with accurate focusing and proper planning content, candidates will clear the test. With the aid of these materials, aspirants get reasonable idea about the kind of questions they pose in actual certification, the certification questions provides the most-represented JavaScript-Developer-I practice exams. The Salesforce experts check ITExamSimulator JavaScript-Developer-I exam dumps. Certification questions also include a test for practise and is an ideal forum for checking the information achieved.

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

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

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

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Average Salary for Salesforce JavaScript-Developer-I Exam Certified Professional

Salesforce JavaScript Developer roles are in great demand nowadays. The average salaries of Salesforce JavaScript Developer I exam Certified professional in:

  • United State - 129,630 USD
  • Europe - 63,500 Euro
  • England - 60,200 POUND

Nowadays, Salesforce Certified JavaScript Developer (JS-Dev-101) exam certification has been a popular certification during IT industry. To survive in the present competitive society and get superiority over other people, Salesforce Certified JavaScript Developer (JS-Dev-101) exam certification seems to be so important and necessary. IT candidates increasingly understand the benefits from gaining Salesforce Certified JavaScript Developer (JS-Dev-101) exam certification. A promotion with suitable job, a high salary and a happy life are the pursuance for all of us, which can be brought by Salesforce Certified JavaScript Developer (JS-Dev-101) exam certification. So, we can always see lots of people make great efforts to prepare for the JavaScript-Developer-I exam test. Actually, the Salesforce Certified JavaScript Developer (JS-Dev-101) exam test is indeed difficult, so, I guess you must be seeking for the related resource about Salesforce Certified JavaScript Developer (JS-Dev-101) exam. Now please focus your attention on our Salesforce Salesforce Certified JavaScript Developer (JS-Dev-101) exam training material & Salesforce Certified JavaScript Developer (JS-Dev-101) exam simulators, unexpected effects will be shown for you.

Salesforce JavaScript-Developer-I exam simulator

Salesforce JavaScript-Developer-I Exam Syllabus Topics:

SectionWeightObjectives
Topic 1: Objects, Functions, and Classes25%- Function declarations and expressions
- Prototypal inheritance
- Object creation and manipulation
- Arrow functions
- Variable scope and closures
- Higher-order functions
- Execution flow and context
- ES6 classes and inheritance
- Modules and decorators
Topic 2: Testing7%- Writing and modifying unit tests
- Unit testing concepts
- Test coverage and reliability
- Test effectiveness evaluation
Topic 3: Variables, Types, and Collections23%- Variable declarations and initialization
- Truthy and falsy evaluations
- Primitive and complex data types
- Type coercion and conversion
- Arrays and collections
- JSON parsing and manipulation
- Strings, numbers, and dates
Topic 4: Debugging and Error Handling7%- Breakpoints and code inspection
- Custom error types
- Console methods for debugging
- Error handling techniques (try/catch/finally)
Topic 5: Asynchronous Programming13%- Promises (creation, chaining, error handling)
- Callbacks
- Event loop and execution flow
- Async/Await syntax
- Asynchronous patterns for business requirements
Topic 6: Browser and Events17%- Event handling and listeners
- Browser-specific APIs
- Interacting with forms and user input
- Event propagation (bubbling and capturing)
- Browser Developer Tools usage
- DOM manipulation
Topic 7: Server Side JavaScript8%- Core Node.js modules
- Node.js fundamentals
- Server-side JavaScript implementations
- CLI commands
- Package management (npm)

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