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Salesforce Certified JavaScript Developer I : CRT-600 Exam Questions
- Exam Code: CRT-600
- Exam Name: Salesforce Certified JavaScript Developer I
- Updated: Sep 17, 2026
- Q&As: 225 Questions and Answers
About Salesforce Certified JavaScript Developer I Exam Braindumps
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Salesforce CRT-600 Exam Overview:
| Certification Vendor: | Salesforce |
|---|---|
| Exam Name: | Salesforce Certified JavaScript Developer I |
| Exam Number: | CRT-600 |
| Exam Price: | USD 200 |
| Passing Score: | 65% |
| Certificate Validity Period: | Annual maintenance required |
| Related Certifications: | Lightning Web Components Specialist Superbadge |
| Available Languages: | English |
| Exam Format: | Multiple choice, Multiple select |
| Real Exam Qty: | 60 |
| Exam Duration: | 105 minutes |
| Sample Questions: |  |
| Exam Way: | Proctored onsite or online via Pearson VUE |
| Pre Condition: | None (recommended 1-2 years JavaScript experience) |
| Official Syllabus URL: | https://trailhead.salesforce.com/en/credentials/javascriptdeveloperi |
Salesforce CRT-600 Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Server-side JavaScript | 8% | - npm basics - Node.js CLI & libraries |
| Topic 2: Asynchronous Programming | 13% | - Async/await - Promises - Callback functions |
| Topic 3: Debugging and Error Handling | 7% | - Error throwing & catching - Console and breakpoint debugging |
| Topic 4: Testing | 7% | - Assertions and types of tests - Testing fundamentals |
| Topic 5: Variables, Types, and Collections | 23% | - JSON manipulation - Variables and initialization - Arrays and collections - Type coercion & conversion |
| Topic 6: Browser and Events | 17% | - Browser dev tools - Event handling - DOM manipulation |
| Topic 7: Objects, Functions, and Classes | 25% | - Function definitions & usage - Object creation & prototypes - Class declaration & usage - Modules |
Salesforce CRT-600 Exam: Straight Answers
USD 200 per attempt, 65% to pass. A failed retake costs the full fee again — prepare efficiently with the 225 practice questions for the CRT-600 exam at VCEPrep.
The Salesforce Certified JavaScript Developer I is Salesforce's certification exam for Salesforce Certified, at the Specialist level. Certification is how workers face new challenges and seize promotion chances. Related credentials include Lightning Web Components Specialist Superbadge.
Yes — new customers get a free Salesforce Certified JavaScript Developer I demo, and regular customers enjoy constant promotions and membership discounts. Purchases include 365 days of free updates by email; renew afterward at 50% off.
The Salesforce Certified JavaScript Developer I blueprint spans 7 domains — including Server-side JavaScript (8%), Testing (7%), Browser and Events (17%). Concentrate effort where the weight sits; the complete outline above lists every subtopic.
None (recommended 1-2 years JavaScript experience) Eligibility rules change over time, so verify the current requirements on the official page (official CRT-600 exam page) before registering.
105 minutes for 60 questions. Efficient preparation — steady timed practice with the VCEPrep engine — makes the real clock feel generous.
Upon successful payment, our system emails the Salesforce Certified JavaScript Developer I material to your mailbox automatically within about a minute — every transaction is secure, and strict private policies protect your information. If nothing arrives within 2 hours, check spam and contact our 24/7 service center. If you fail the corresponding CRT-600 exam within 60 days of purchase, we refund in full: send a scanned enrollment slip plus the official Score Report PDF within 2 days of the exam, processed within 7 days. Excluded: 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.
Salesforce Certified JavaScript Developer I Sample Questions:
Question #1
Refer to the code below:
Function Person(firstName, lastName, eyecolor) {
this.firstName =firstName;
this.lastName = lastName;
this.eyeColor = eyeColor;
}
Person.job = 'Developer';
const myFather = new Person('John', 'Doe');
console.log(myFather.job);
What is the output after the code executes?
- A. ReferenceError: assignment to undeclared variable "Person"
- B. Developer
- C. Undefined
- D. ReferenceError: eyeColor is not defined
Correct Answer: C 🗳️
Question #2
Which statement can a developer apply to increment the browser's navigation history without a page refresh?
Which statement can a developer apply to increment the browser's navigation history without a page refresh?
- A. window.history.pushStare(newStateObject, ' ', null);
- B. window.history.state.push(newStateObject);
- C. window.history.replaceState(newStateObject,' ', null);
- D. window.history.pushState(newStateObject);
Correct Answer: C 🗳️
Question #3
Given the following code:
Let x =null;
console.log(typeof x);
What is the output of the line 02?
- A. "Null"
- B. "X"
- C. "undefined"
- D. "Object"
Correct Answer: D 🗳️
Question #4
A developer at Universal Containers is creating their new landing page based on HTML, CSS, and JavaScript.
To ensure that visitors have a good experience, a script named personalizeWebsiteContent needs to be executed when the webpage is fully loaded (HTML content and all related files), in order to do some custom initializations.
Which implementation should be used to call Fe:s:-a;::eHec5;te::.-.ter.: based on the business requirement above?
- A. Add a handler to the personalizeWebsiteContent script to handle the load event
- B. Add a listener to the window object to handle the DOMContentLoaded event
- C. Add a handler to the personalizeWebsiteContent script to handle the DOMContentLoaded event
- D. Add a listener to the window object to handle the lead event
Correct Answer: D 🗳️
Question #5
After user acceptance testing, the developer is asked to change the webpage background based on user's location. This change was implemented and deployed for testing.
The tester reports that the background is not changing, however it works as required when viewing on the developer's computer.
Which two actions will help determine accurate results?
Choose 2 answers
- A. The developer should rework the code.
- B. The developer should inspect their browser refresh settings.
- C. The tester should disable their browser cache.
- D. The tester should dear their browser cache.
Correct Answer: B,D 🗳️
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