Exam Name: Salesforce Certified JavaScript Developer I
Certification Provider: Salesforce
Corresponding Certification: Salesforce Certified
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Instant Download Salesforce : CRT-600
Check Updated on: Oct 25, 2026
No. of Questions: 225 Questions & Answers with Exam Engine
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More than 20 years of growth teaches a company what candidates actually need. ActualVCE pours that history into the Salesforce Certified JavaScript Developer I set — 225 practice questions, current and efficient.
Salesforce CRT-600 Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Objects, Functions, and Classes | 25% | - Implement classes, inheritance, and modules - Create and manipulate objects - Define functions, scope, and closures |
| Topic 2: Asynchronous Programming | 15% | - Timers and event loop - Callbacks, promises, and async/await - Fetch API and HTTP requests |
| Topic 3: Variables, Types, and Collections | 23% | - Declare and initialize variables - Use primitive and reference data types - Work with arrays, sets, maps, and JSON |
| Topic 4: Browser and Events | 17% | - Event handling and propagation - DOM manipulation and traversal - Browser APIs and development tools |
| Topic 5: Debugging and Testing | 12% | - Code quality and linting - Error handling and debugging techniques - Write and run unit tests |
| Topic 6: Server-Side JavaScript | 8% | - Node.js basics and modules - Use Node.js core APIs |
Salesforce Certified JavaScript Developer I Exam FAQ — Start Here
Yes — the free Salesforce Certified JavaScript Developer I demo lets you evaluate question quality and analyses before paying. Purchases include 365 days of free updates, renewable afterward at 50% off.
Use the vendor's official registration channels:
The Salesforce Certified JavaScript Developer I is delivered Online proctored or onsite at Pearson VUE test centers, so choose the arrangement that suits you when booking.
The Salesforce Certified JavaScript Developer I blueprint spans 6 domains — including Server-Side JavaScript (8%), Browser and Events (17%), Variables, Types, and Collections (23%). Read the weightings as priorities: the points concentrate where the percentages do. The full outline above covers every subtopic.
The Salesforce Certified JavaScript Developer I is Salesforce's exam for the Salesforce Certified JavaScript Developer I certification, a Developer-level credential. It's a hot topic because certified candidates stand out in job competition — the credential opens possibilities that uncertified resumes can't. Related credentials include Salesforce Certified Platform Developer I, Salesforce Certified B2C Commerce Developer.
USD 200 (plus tax; retake USD 100) per attempt; 68% to pass. Every retake bills the full fee again, so prepare properly the first time — the 225 practice questions from ActualVCE are the affordable rehearsal.
Delivery is instant: payment triggers an automatic email within a minute, and the test engine opens easily without extra software installation. Nothing after 2 hours? Check spam and contact our round-the-clock support. If you fail the corresponding CRT-600 exam within 60 days of purchase, we give a full refund — send a scanned enrollment slip plus the official Score Report PDF within 2 days of the exam, processed within 7 days. Exclusions: exams within 3 days of purchase, candidate names that don't match the payer, and free or expired products. Or exchange for two equal-value products free.
105 minutes for 60 + up to 5 unscored items questions. That's a pace you can train: run timed simulations in the ActualVCE engine until answering at speed feels normal, and use the analyses to make every wrong answer count.
Yes:
After any course, deepen understanding with the 225 practice questions for the Salesforce Certified JavaScript Developer I — the specific analyses extend your grasp of the technology, not just your memory of answers.
No mandatory prerequisites; recommended 1–2 years of JavaScript development experience Vendors revise eligibility rules over time, so confirm the current requirements on the official page (official CRT-600 exam page) before you register.
Salesforce Certified JavaScript Developer I Sample Questions:
is below:
<input type="file" onchange="previewFile()">
<img src="" height="200" alt="Image Preview..."/>
The JavaScript portion is:
01 function previewFile(){
02 const preview = document.querySelector('img');
03 const file = document.querySelector('input[type=file]').files[0];
04 //line 4 code
05 reader.addEventListener("load", () => {
06 preview.src = reader.result;
07 },false);
08 //line 8 code
09 }
In lines 04 and 08, which code allows the user to select an image from their local computer , and to display the image in the browser?
- A. 04 const reader = new File();
08 if (file) URL.createObjectURL(file); - B. 04 const reader = new File();
08 if (file) reader.readAsDataURL(file); - C. 04 const reader = new FileReader();
08 if (file) URL.createObjectURL(file); - D. 04 const reader = new FileReader();
08 if (file) reader.readAsDataURL(file);
Correct Answer: D 🗳️
developer has a web server running with Node.js. The command to start the web server is node server,js. The web server started having latency issues. Instead of a one second turn around for web requests, the developer now sees a five second turnaround, Which command can the web developer run to see what the module is doing during the latency period?
- A. NODE_DEBUG =true node server.js
- B. DEBUG = http, https node server.js
- C. DEBUG =true node server.js
- D. NODE_DEBUG =http, https node server.js
Correct Answer: C 🗳️
Refer to the code below:
Const pi = 3.1415326,
What is the data type of pi?
- A. Decimal
- B. Number
- C. Float
- D. Double
Correct Answer: B 🗳️
Refer the following code
what is the value of array after code executes?
- A. [ 1, 2, 3, 5 ]
- B. [ 1, 2, 3, 4 ]
Correct Answer: A 🗳️
Refer to the following code block:
What is the console output?
- A. > Jackie got 70% on test.
- B. > Better student Jackie got 70% on test.
- C. > Uncaught Reference Error
- D. > Better student Jackie got 100% on test.
Correct Answer: D 🗳️
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