JavaScript-Developer-I Dumps - Salesforce Certified JavaScript Developer (JS-Dev-101) Practice Exam Questions

For the Salesforce JavaScript Developer certification, you should have a good grasp of JavaScript, but you don't need to dive too deep into all frameworks. Focus on understanding core JavaScript concepts and how they're applied. It's more about knowing JavaScript itself rather than being an expert in every framework out there.

For the Salesforce JavaScript Developer exam, your main focus should be on JavaScript itself. Being comfortable with HTML and CSS can also be helpful since they often work together with JavaScript in web development. These are the key ingredients for creating dynamic and interactive web pages.

In the Salesforce ecosystem, JavaScript plays a big role in creating dynamic, interactive client-side applications. It's used in Lightning Web Components (LWC) to build custom user interfaces on the Salesforce platform. Knowing JavaScript lets you customize and enhance the user experience in Salesforce, making it a valuable skill for Salesforce developers.

The Salesforce JavaScript Developer exam covers:

• Fundamental JavaScript concepts: Variables, types, expressions, operators, and more.
• Functions and classes: Understanding how to structure and organize code.
• Browser and Events: Interacting with the browser and handling user inputs.
• Debugging and Error Handling: Finding and fixing issues in the code.
• Asynchronous Programming: Working with callbacks, promises, and async/await.
• It's all about getting a well-rounded understanding of JavaScript!

The passing score for the Salesforce JavaScript Developer exam can vary, but it's typically around 65-70%. Salesforce determines this score based on the exam's difficulty and the performance of all candidates. It ensures that the score reflects a fair level of knowledge and skill in JavaScript.

The Salesforce JavaScript Developer certification is usually valid for a year. Salesforce requires you to complete a maintenance module annually to keep your certification up to date. This involves updating your knowledge with the latest features and changes in Salesforce. It's like a quick refresher to keep your skills sharp and current.

It’s a technical certification that validates your ability to build dynamic, interactive user interfaces using JavaScript within the Salesforce platform—especially in Lightning Web Components (LWC), Visualforce, and modern web frameworks. 

This exam is ideal for developers with experience in HTML, CSS, and JavaScript who want to specialize in building modern, performant apps inside Salesforce. It’s perfect for those transitioning from traditional Salesforce development into modern web app creation. 

While the Administrator II focuses on configuration and business process setup, the JavaScript Developer exam tests coding skills—writing reusable components, handling data, managing state, and integrating with APIs—all using JavaScript and modern web standards. 

The primary language is JavaScript (ES6+). You’ll also need to understand: 

• HTML (for component structure)
• CSS (for styling)
• Lightning Web Components (LWC) framework
• Modern JavaScript concepts like async/await, Promises, and modules

JavaScript enables rich, real-time interactions—like live search, dynamic forms, and instant updates—without reloading the page. It powers modern Salesforce apps, improving user experience and performance. 

• api makes a property public so it can be accessed by parent components.
• track tells LWC to monitor a variable for changes and re-render the template when it updates. It’s used for reactive state management.