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Instant Download Salesforce : CRT-600 Questions & Answers as PDF & Test Engine
- Exam Code: CRT-600
- Exam Name: Salesforce Certified JavaScript Developer I
- Updated: Oct 24, 2026
- No. of Questions: 225 Questions and Answers
- Download Limit: Unlimited
Price: $69.98
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Multiple-choice questions feel different under a ticking clock. The Lead2Passed test engines recreate the real CRT-600 exam experience, so the 225 practice questions for the Salesforce Certified JavaScript Developer I exam train both your knowledge and your nerve for 2026 test day.
Salesforce CRT-600 Exam Syllabus Topics:
| Section | Objectives |
|---|---|
| Topic 1: DOM Manipulation and Events | - Event handling and propagation - DOM traversal and updates |
| Topic 2: Debugging, Testing, and Security | - Debugging JavaScript in Salesforce environments - Security best practices (CSP, data handling) |
| Topic 3: Salesforce Platform Integration | - Apex integration from JavaScript - Lightning Web Components (LWC) basics |
| Topic 4: JavaScript Fundamentals | - Objects, arrays, and functions - Language syntax and core concepts - ES6+ features |
| Topic 5: Asynchronous JavaScript | - Promises and async/await - API calls and data handling |
Read Before You Register: CRT-600 Exam Q&A
No formal prerequisites required, but recommended familiarity with JavaScript and Salesforce Platform Developer I knowledge These conditions come from Salesforce and can be revised, so confirm the current requirements on the official exam page: https://trailhead.salesforce.com/credentials/javascript-developer-i — better a two-minute check than a wasted Salesforce Certified JavaScript Developer I registration.
The Salesforce Certified JavaScript Developer I exam gives you 105 minutes to work through 60 questions. Split that down and each question earns only a narrow slice of the clock — lingering too long on one item borrows time from three others. Build the habit now: run timed, full-length sessions in the Lead2Passed test engine until finishing early feels normal on the real CRT-600 exam.
Salesforce recommends these official training resources:
Once the coursework is done, pressure-test it with the 225 practice questions for the CRT-600 exam from Lead2Passed — theory only counts when it survives exam conditions.
The CRT-600 exam is Salesforce's official assessment leading to the Salesforce Certified JavaScript Developer I certification, which sits at the Associate level. It validates job-ready, vendor-recognized skills — the kind employers screen for. It also belongs to a wider certification family that includes Salesforce Certified Platform Developer I, Salesforce Certified JavaScript Developer II, so it can anchor a longer credential roadmap.
Delivery takes about a minute: after payment, Lead2Passed emails your CRT-600 download instantly — if nothing arrives within 2 hours, check spam and contact support for an immediate resend. Install it on as many computers as you like. On failure: take the corresponding CRT-600 exam within 60 days of purchase, and a fail qualifies you for a full refund. File within 2 days after the exam with a scanned enrollment slip and the official Score Report PDF; claims close within 7 days. Excluded are attempts within 3 days of purchase, exams never actually taken, free materials, and expired orders — and the candidate name must match the payer name. Prefer to keep studying? On request we can exchange your product for two free exam products of equal value, and your original purchase keeps its update service.
The Salesforce Certified JavaScript Developer I syllabus divides into 5 domains, led by JavaScript Fundamentals, Salesforce Platform Integration, Debugging, Testing, and Security. Heavier domains deserve heavier study time — the complete outline with every domain is listed above on this page.
Book through the official Salesforce registration channels:
One thing to note while booking: the exam is delivered via Online proctored or onsite via Pearson VUE.
Plan on $200 USD per attempt, with 65% required to pass the Salesforce Certified JavaScript Developer I exam. Since every retake bills the full fee again, the cheapest strategy is arriving overprepared. Test yourself with Lead2Passed practice questions first — when your timed scores clear 65% consistently, booking the CRT-600 exam becomes a formality.
Yes — a free demo is available for the Salesforce Certified JavaScript Developer I product, so you can review the question style and verified answers yourself first. After purchase, 365 days of free updates are included; once the year ends, the update service renews at a 50% discount from your member zone.
Salesforce Certified JavaScript Developer I Sample Questions:
Refer to the code declarations below:
Which three expressions return the string JavaScript?
Choose 3 answers
- A. Str1 + str2;
- B. $(str1) $ (str2} ';
- C. Str1.concat (str2);
- D. Str1.join (str2);
- E. Concat (str1, str2);
Correct Answer: A,B,C 🗳️
Refer to the code below:
console.log(''start);
Promise.resolve('Success') .then(function(value){
console.log('Success');
});
console.log('End');
What is the output after the code executes successfully?
- A. Start
Success
End - B. End
Start
Success - C. Success
Start
End - D. Start
End
Success
Correct Answer: D 🗳️
A developer implements a function that adds a few values.
Function sum(num) {
If (num == undefined) {
Num =0;
}
Return function( num2, num3){
If (num3 === undefined) {
Num3 =0 ;
}
Return num + num2 + num3;
}
}
Which three options can the developer invoke for this function to get a return value of 10 ?
Choose 3 answers
- A. sum(5)(5)
- B. Sum () (20)
- C. sum() (5, 5)
- D. Sum (5, 5) ()
- E. sum(10) ()
Correct Answer: A,C 🗳️
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 DOMContentLoaded event
- B. Add a listener to the window object to handle the lead event
- C. Add a handler to the personalizeWebsiteContent script to handle the load event
- D. Add a listener to the window object to handle the DOMContentLoaded event
Correct Answer: B 🗳️
A developer creates a simple webpage with an input field. When a user enters text in the input field and clicks the button, the actual value of the field must be displayed in the console.
Here is the HTML file content:
<input type =" text" value="Hello" name ="input">
<button type ="button" >Display </button> The developer wrote the javascript code below:
Const button = document.querySelector('button');
button.addEvenListener('click', () => (
Const input = document.querySelector('input');
console.log(input.getAttribute('value'));
When the user clicks the button, the output is always "Hello".
What needs to be done to make this code work as expected?
- A. Replace line 03 with const input = document.getElementByName('input');
- B. Replace line 04 with console.log(input .value);
- C. Replace line 02 with button.addCallback("click", function() {
- D. Replace line 02 with button.addEventListener("onclick", function() {
Correct Answer: B 🗳️
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