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Salesforce Certified JavaScript Developer I exam is a computer-based test that consists of 60 multiple-choice questions that the candidates need to complete within 105 minutes. JavaScript-Developer-I exam is designed to assess the candidate's understanding of the key aspects of JavaScript development on the Salesforce platform, including the architecture of Salesforce Lightning, the Apex programming language, and the use of Visualforce and other web technologies.

As the talent competition increases in the labor market, it has become an accepted fact that the JavaScript-Developer-I certification has become an essential part for a lot of people, especial these people who are looking for a good job, because the certification can help more and more people receive the renewed attention from the leader of many big companies. So it is very important for a lot of people to gain the Salesforce certification. We must pay more attention to the certification and try our best to gain the Salesforce certification. First of all, you are bound to choose the best and most suitable study materials for yourself to help you prepare for your exam. Now we would like to introduce the JavaScript-Developer-I certification guide from our company to you. We sincerely hope that our study materials will help you through problems in a short time.

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Salesforce JavaScript-Developer-I Certification Exam is a highly respected certification in the Salesforce community. Salesforce Certified JavaScript Developer (JS-Dev-101) certification is an excellent way for developers to showcase their skills and expertise in Salesforce development, and it is recognized by employers as a valuable credential. Salesforce Certified JavaScript Developer (JS-Dev-101) certification is also a great way for developers to keep up with the latest trends and best practices in Salesforce development, as the exam is regularly updated to reflect changes in the platform.

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

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The Salesforce JavaScript-Developer-I exam includes multiple-choice questions that cover a range of topics related to JavaScript development on the Salesforce platform. These topics include data modeling, user interface development, debugging and testing, and security. JavaScript-Developer-I exam is designed to test the ability of developers to design and develop custom applications that meet the needs of their clients.

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Salesforce JavaScript-Developer-I Certification Exam is designed to test the knowledge and skills of developers who work with Salesforce and have expertise in JavaScript programming. JavaScript-Developer-I exam is ideal for developers who want to demonstrate their proficiency in using JavaScript to develop custom applications on the Salesforce platform. Salesforce Certified JavaScript Developer (JS-Dev-101) certification exam is created and managed by Salesforce, a leading customer relationship management (CRM) software provider.

Salesforce JavaScript-Developer-I Exam Syllabus Topics:

SectionWeightObjectives
Debugging and Error Handling7%- Console methods and logging
- Error types and exception handling
- Debugging tools and breakpoints
- Defensive programming practices
Variables, Types, and Collections23%- Type coercion and conversion rules
- Working with strings, numbers, dates, and booleans
- Truthy and falsy values
- Array methods and data manipulation
- JSON parsing and usage
- Variable declaration and initialization
Objects, Functions, and Classes25%- Function definitions, parameters, and scope
- Closures and execution context
- Decorators and advanced function patterns
- Modules and imports/exports
- Class syntax, inheritance, and prototypes
- Object creation, properties, and methods
Testing7%- Test doubles and mocks
- Code coverage and best practices
- Testing frameworks and assertions
- Unit testing concepts
Browsers and Events17%- Document Object Model (DOM) manipulation
- Window and document object properties
- Script loading and execution order
- Event handling, propagation, and delegation
- Browser APIs and Web Storage
Server-Side JavaScript8%- Module system and require/import
- Command-line tools and scripts
- Node.js fundamentals and runtime
- Core Node.js modules
Asynchronous Programming13%- Callbacks and callback hell
- Event loop and micro/macro tasks
- Fetch API and HTTP requests
- Async/await syntax
- Promises and chaining

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