Exam Name: Salesforce Certified JavaScript Developer I
Certification Provider: Salesforce
Corresponding Certification: Salesforce Certified
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Instant Download Salesforce : CRT-600 Questions & Answers as PDF & Test Engine
Updated: Sep 17, 2026
No. of Questions: 225 Questions & Answers with Testing Engine
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- Total Questions: 225
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- Total Questions: 225
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The Salesforce certificate is respected precisely because earning it is hard; the CRT-600 exam filters out candidates who prepare casually. TestKingIT prepares you seriously: 225 practice questions for the Salesforce Certified JavaScript Developer I, compiled and cross-reviewed by experts with years of experience in this exam's content.
Salesforce CRT-600 Exam Overview:
| Certification Vendor: | Salesforce |
|---|---|
| Exam Name: | Salesforce Certified JavaScript Developer I |
| Exam Number: | CRT-600 |
| Exam Duration: | 105 minutes |
| Passing Score: | 65% |
| Exam Format: | Multiple Choice, Multiple Select |
| Exam Price: | $200 USD |
| Certificate Validity Period: | Maintenance required annually via Salesforce certification maintenance modules (no fixed expiration if maintained) |
| Real Exam Qty: | 60 |
| Related Certifications: | Salesforce Certified Platform Developer I Salesforce Certified JavaScript Developer II |
| Available Languages: | Spanish, French, German, English, Japanese |
| Recommended Training: | Salesforce Trailhead JavaScript Developer Learning Path Platform Developer I Prep |
| Exam Registration: | Salesforce Certification Registration Pearson VUE Salesforce Exams |
| Sample Questions: | DOWNLOAD DEMO |
| Exam Way: | Online proctored or onsite via Pearson VUE |
| Pre Condition: | No formal prerequisites required, but recommended familiarity with JavaScript and Salesforce Platform Developer I knowledge |
| Official Syllabus URL: | https://trailhead.salesforce.com/credentials/javascript-developer-i |
Salesforce CRT-600 Exam Syllabus Topics:
| Section | Objectives |
|---|---|
| Debugging, Testing, and Security | - Security best practices (CSP, data handling) - Debugging JavaScript in Salesforce environments |
| Salesforce Platform Integration | - Lightning Web Components (LWC) basics - Apex integration from JavaScript |
| DOM Manipulation and Events | - Event handling and propagation - DOM traversal and updates |
| JavaScript Fundamentals | - Language syntax and core concepts - ES6+ features - Objects, arrays, and functions |
| Asynchronous JavaScript | - Promises and async/await - API calls and data handling |
Your Salesforce Certified JavaScript Developer I Questions, Answered Clearly
The CRT-600 exam — officially the Salesforce Certified JavaScript Developer I — is Salesforce's certification exam for professionals who work with its technologies, and passing it awards the Salesforce Certified JavaScript Developer I certification at the Associate level. Vendor-issued credentials like this one remain among the clearest signals of skill a resume can carry. It also connects naturally to Salesforce Certified Platform Developer I, Salesforce Certified JavaScript Developer II as a next step.
Yes — TestKingIT offers a free PDF demo of the CRT-600 practice questions so you can inspect the question quality and verified answers before paying anything. Once you purchase, 365 days of free updates are included, and if the product expires, the update service renews at a 50% discount from your member zone.
Passing the CRT-600 exam requires 65%, and the official registration fee is $200 USD. That fee buys a single attempt — a retake is charged at full price again. The smart sequence is to rehearse first: cycle through 225 practice questions at TestKingIT under timed conditions until your scores clear the passing mark with margin, then book.
The Salesforce Certified JavaScript Developer I blueprint comprises 5 domains, led by Asynchronous JavaScript, Salesforce Platform Integration, and DOM Manipulation and Events. The complete weighted syllabus is in the section above — accurate preparation starts with knowing exactly what the exam weights most.
Salesforce recommends the following training for the Salesforce Certified JavaScript Developer I:
Courses build understanding; carefully compiled practice builds accuracy under pressure. Combine either resource above with 225 practice questions from TestKingIT and your preparation covers both.
No formal prerequisites required, but recommended familiarity with JavaScript and Salesforce Platform Developer I knowledge
Vendor criteria evolve, so before you schedule anything, verify the latest requirements on the official Salesforce exam page.
Registration for the Salesforce Certified JavaScript Developer I runs through these official channels:
Worth noting when you book: the CRT-600 exam is delivered Online proctored or onsite via Pearson VUE.
Delivery first: download immediately after payment, with an email copy arriving within one minute. If 2 hours pass with no email, check spam and contact our support team. You can install the software on as many computers as you need — no device limit.
If you take the CRT-600 exam within 60 days of purchase and do not pass, the TestKingIT money back guarantee applies: file within 2 days of the exam with a scanned enrollment slip and the official score report (PDF), and the claim is processed within 7 days. The candidate name must match the payer name; the policy excludes exams taken within 3 days of purchase, purchases never used in an actual exam attempt, free materials, and expired orders. If you would rather keep preparing, exchange the product for two free exam packages of equal value and keep the update service on your original purchase.
Expect 60 questions inside 105 minutes on the CRT-600 exam. The clock is the quiet examiner: knowing the content is not enough if pacing fails you. Rehearse with the TestKingIT Windows software or online engine in timed mode — the smooth, stable interface means nothing technical distracts you while you build your rhythm.
Salesforce Certified JavaScript Developer I Sample Questions:
A developer wants to create an object from a function in the browser using the code below.
What happens due to the lack of the mm keyword on line 02?
- A. window.name is assigned to 'hello' and the variable = remains undefined.
- B. The m variable is assigned the correct object.
- C. window.m Is assigned the correct object.
- D. The m variable is assigned the correct object but this.name remains undefined.
Correct Answer: A 🗳️
A developer uses a parsed JSON string to work with user information as in the block below:
01 const userInformation ={
02 " id " : "user-01",
03 "email" : "[email protected]",
04 "age" : 25
Which two options access the email attribute in the object?
Choose 2 answers
- A. userInformation("email")
- B. userInformation.email
- C. userInformation(email)
- D. userInformation.get("email")
Correct Answer: A,B 🗳️
Given the JavaScript below:
01 function filterDOM (searchString) {
02 const parsedSearchString = searchString && searchString.toLowerCase() ;
03 document.quesrySelectorAll(' .account' ) . forEach(account => (
04 const accountName = account.innerHTML.toLOwerCase();
05 account. Style.display = accountName.includes(parsedSearchString) ? /*Insert code*/;
06 )};
07 }
Which code should replace the placeholder comment on line 05 to hide accounts that do not match the search string?
- A. ' Block ' : ' none '
- B. ' hidden ' : ' visible '
- C. ' visible ' : ' hidden '
- D. ' name ' : ' block '
Correct Answer: A 🗳️
Refer to the following code:
function test (val) {
If (val === undefined) {
return 'Undefined values!' ;
}
if (val === null) {
return 'Null value! ';
}
return val;
}
Let x;
test(x);
What is returned by the function call on line 13?
- A. 'Null value!'
- B. 'Undefined values!'
- C. Line 13 throws an error.
- D. Undefined
Correct Answer: B 🗳️
A developer is setting up a new Node.js server with a client library that is built using events and callbacks.
The library:
* Will establish a web socket connection and handle receipt of messages to the server
* Will be imported with require, and made available with a variable called we.
The developer also wants to add error logging if a connection fails.
Given this info, which code segment shows the correct way to set up a client with two events that listen at execution time?
- A. try{
ws.connect (( ) => {
console.log('connected to client'); }); - B. ws.connect (( ) => {
console.log('connected to client'); }).catch((error) => { console.log('ERROR' , error); }}; - C. ws.on ('connect', ( ) => { console.log('connected to client'); }}; ws.on('error', (error) => { console.log('ERROR' , error); }};
- D. ws.on ('connect', ( ) => {
console.log('connected to client'); ws.on('error', (error) => { console.log('ERROR' , error); });
});
Correct Answer: C 🗳️
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