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The Salesforce JavaScript-Developer-I exam is offered by Salesforce and can be taken via an in-person proctored exam at a test center or remotely, using a webcam and high-speed internet connection. It consists of 60 multiple-choice questions, which must be completed in 105 minutes. Candidates must achieve a minimum score of 65% to pass the exam and become certified.

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

To be eligible to take the Salesforce JavaScript-Developer-I certification exam, candidates must have a minimum of six months of experience working with JavaScript and Salesforce development. They must also have a good understanding of programming concepts, such as variables, data types, and control structures. Additionally, candidates must have a solid understanding of Salesforce platform concepts, such as objects, fields, and relationships.

Salesforce JavaScript-Developer-I Certification Exam is designed to test the skills and knowledge of individuals who work with Salesforce’s Lightning Web Components (LWC) and Aura Components. JavaScript-Developer-I exam is intended for developers who have experience building custom applications on the Salesforce platform using JavaScript. Salesforce Certified JavaScript Developer (JS-Dev-101) certification demonstrates the ability to design, develop, and deploy scalable and maintainable custom applications that meet the requirements of businesses and organizations.

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Salesforce JavaScript-Developer-I Exam Syllabus Topics:

SectionObjectives
Testing and Debugging- Debugging techniques and tools
- Unit testing principles
JavaScript Language Fundamentals- ES6+ syntax and features
- Functions, scope, and closures
- Data types, variables, and operators
Browser and DOM Interaction- Event handling and propagation
- DOM manipulation and traversal
- Browser APIs (fetch, storage, timers)
Salesforce Platform Integration- Lightning Web Components (LWC) JavaScript usage
- Calling Apex methods from JavaScript
- Security considerations in Salesforce JavaScript
Asynchronous JavaScript- Error handling in async workflows
- Event loop and concurrency model
- Promises and async/await

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