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Last Updated: Sep 04, 2026

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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).

Difficulty in Writing of Salesforce JavaScript-Developer-I Exam

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 ActualTestsQuiz JavaScript-Developer-I exam dumps. Certification questions also include a test for practise and is an ideal forum for checking the information achieved.

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

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

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

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

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Salesforce JavaScript-Developer-I日本語 Exam Syllabus Topics:

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