Salesforce JavaScript-Developer-I Valid Dumps - Salesforce Certified JavaScript Developer (JS-Dev-101)

Updated: Sep 20, 2026
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About Salesforce JavaScript-Developer-I Exam

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

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

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

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Salesforce JavaScript-Developer-I Exam Syllabus Topics:

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

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