JavaScript-Developer-I: Salesforce Certified JavaScript Developer (JS-Dev-101) test questions materials can help users pass exam certainly. If users pay much attention to our Salesforce JavaScript-Developer-I test questions most of users will pass real test with good passing score.

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

JavaScript-Developer-I actual test
  • Exam Code: JavaScript-Developer-I
  • Exam Name: Salesforce Certified JavaScript Developer (JS-Dev-101)
  • Updated: Jul 17, 2026
  • Q & A: 149 Questions and Answers
  • PDF Demo
  • PC Test Engine
  • Online Test Engine
  • Total Price: $59.99  

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

Who should take the Salesforce JavaScript-Developer-I Exam

This course is designed for Javascript developers starting on the Salesforce platform who require programming customizations on front-end and back-end. There are no prerequisites for Salesforce JavaScript Developer I Exam. Typical job roles that align to the Salesforce Certified JavaScript Developer I are as follows:

  • JavaScript programmer
  • Full stack developer
  • Web application developer
  • Software/backend developer
  • Technical Project Manager
  • Technical Product Manager
  • UI/UX Engineer
  • Salesforce developer
  • Front end developer
  • Support engineer

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

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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.

Three versions of excellent products: PDF version, Soft version, APP version

We release three versions of JavaScript-Developer-I: Salesforce Certified JavaScript Developer (JS-Dev-101) test questions materials. Different kinds of products satisfy different demands of people. If you like writing and reading on paper, PDF version of JavaScript-Developer-I test questions are suitable for you. If you like studying on computer you can choose soft version or/and APP version.

These two versions of JavaScript-Developer-I test engine have some similar functions: timed test, mark your performance, point out wrong questions and remind you of practicing many times. Soft version of JavaScript-Developer-I: Salesforce Certified JavaScript Developer (JS-Dev-101) test questions are downloaded and installed in personal computers (Windows operating system and Java environment). APP version of JavaScript-Developer-I test questions are based on WEB browser, it supports Windows / Mac / Android / iOS etc.

Soft version of JavaScript-Developer-I: Salesforce Certified JavaScript Developer (JS-Dev-101) test questions can be downloaded in more than 200 personal computers. Once you download software, you use it offline any time. If there is no network, you can copy on another computer. APP version of JavaScript-Developer-I test questions are downloaded and installed well. It is based on web browser, if you do not close website, you can also use it offline. As to functional performance APP version of Salesforce JavaScript-Developer-I test exam materials may be much stabler than Soft version.

Salesforce JavaScript-Developer-I Exam Syllabus Topics:

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

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