Study with JavaScript-Developer-I日本語 Actual Test Questions

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Last Updated: Aug 10, 2026

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

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

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 Actualtests4sure JavaScript-Developer-I exam dumps. Certification questions also include a test for practise and is an ideal forum for checking the information achieved.

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).

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How to Study the Salesforce JavaScript-Developer-I Exam

The best study material one can get is the JavaScript-Developer-I practice exam dumps. To ensure good grades, do attempt the JavaScript-Developer-I practice exams. The JavaScript Developer I from Salesforce typically has 1-2 years of experience as a JavaScript developer with the following JavaScript topics.

  • Discharge

  • Functions (more functions in higher order)

  • Control of Mistake

  • Scope of Variables

  • Monitor (agnostic platform)

  • Objects & Arrays: Data Structures

  • Classes

  • Asynchronous Programming

  • JavaScript on the backend

  • Strings

  • Forms of data and operators

  • Activities

  • Modules

  • Conversion type (inclusive versus explicit)

  • Item Model Document

To prepare for this test, we advise a combination of practical experience, completion of training courses, pathways and self-study in the areas listed in the examination outline section of this examination guide.

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

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

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