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Salesforce JavaScript-Developer-I dumps - in .pdf
- Exam Code: JavaScript-Developer-I
- Exam Name: Salesforce Certified JavaScript Developer (JS-Dev-101)
- Updated: Oct 08, 2026
- Q & A: 149 Questions and Answers
- PDF Price: $59.99
- Free Demo
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- Exam Code: JavaScript-Developer-I
- Exam Name: Salesforce Certified JavaScript Developer (JS-Dev-101)
- Updated: Oct 08, 2026
- Q & A: 149 Questions and Answers
- PDF Version + PC Test Engine + Online Test Engine
- Value Pack Total: $119.98 $79.99
- Save 50%
Salesforce JavaScript-Developer-I dumps - Testing Engine
- Exam Code: JavaScript-Developer-I
- Exam Name: Salesforce Certified JavaScript Developer (JS-Dev-101)
- Updated: Oct 08, 2026
- Q & A: 149 Questions and Answers
- Software Price: $59.99
- Testing Engine
About Salesforce JavaScript-Developer-I Exam braindumps
Different candidates prepare for Salesforce Certified JavaScript Developer (JS-Dev-101) in different ways, and ValidTorrent supports PDF study, a desktop test engine, and an online test engine. The JavaScript-Developer-I package gives you 149 practice questions in a format that can match your routine in 2026.
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- Desktop Test Engine: installable Windows software with two practice modes, offline access, and an environment that simulates the exam experience.
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Salesforce JavaScript-Developer-I Exam Overview:
| Certification Vendor: | Salesforce |
|---|---|
| Exam Name: | Salesforce Certified JavaScript Developer I Exam |
| Exam Number: | JS-Dev-101 / JavaScript-Developer-I |
| Exam Format: | Multiple-select, Multiple-choice |
| Real Exam Qty: | 60 scored + up to 5 unscored |
| Passing Score: | 65% |
| Available Languages: | English, Japanese |
| Exam Price: | USD 200 (+ applicable taxes) |
| Exam Duration: | 105 minutes |
| Related Certifications: | Salesforce Certified Lightning Web Components Specialist Salesforce Certified Platform Developer I |
| Certificate Validity Period: | No expiration; requires regular maintenance via Trailhead modules |
| Recommended Training: | Salesforce JavaScript Developer I Certification Prep |
| Exam Registration: | Salesforce Certification Registration |
| Sample Questions: |  |
| Exam Way: | Online proctored or onsite at authorized testing centers |
| Pre Condition: | No formal prerequisites; 1–2 years of JavaScript development experience recommended |
| Official Syllabus URL: | https://trailhead.salesforce.com/credentials/javascript-developer-i |
Salesforce JavaScript-Developer-I Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Asynchronous Programming | 13% | - Async/await syntax - Fetch API and HTTP requests - Promises and chaining - Callbacks and callback hell - Event loop and micro/macro tasks |
| Topic 2: Objects, Functions, and Classes | 25% | - Class syntax, inheritance, and prototypes - Closures and execution context - Modules and imports/exports - Decorators and advanced function patterns - Object creation, properties, and methods - Function definitions, parameters, and scope |
| Topic 3: Testing | 7% | - Code coverage and best practices - Testing frameworks and assertions - Unit testing concepts - Test doubles and mocks |
| Topic 4: Variables, Types, and Collections | 23% | - Array methods and data manipulation - Truthy and falsy values - Type coercion and conversion rules - JSON parsing and usage - Variable declaration and initialization - Working with strings, numbers, dates, and booleans |
| Topic 5: Browsers and Events | 17% | - Document Object Model (DOM) manipulation - Window and document object properties - Browser APIs and Web Storage - Event handling, propagation, and delegation - Script loading and execution order |
| Topic 6: Debugging and Error Handling | 7% | - Debugging tools and breakpoints - Error types and exception handling - Defensive programming practices - Console methods and logging |
| Topic 7: Server-Side JavaScript | 8% | - Node.js fundamentals and runtime - Core Node.js modules - Module system and require/import - Command-line tools and scripts |
Salesforce Certified JavaScript Developer (JS-Dev-101): Frequently Asked Questions
The JavaScript-Developer-I exam leads to the Salesforce Certified JavaScript Developer I certification from Salesforce. It is positioned at the Intermediate / Developer level. The exam validates the knowledge and skills expected of candidates preparing for Salesforce Certified JavaScript Developer (JS-Dev-101).
Related certifications include:
- Salesforce Certified Platform Developer I
- Salesforce Certified Lightning Web Components Specialist
The JavaScript-Developer-I exam includes 60 scored + up to 5 unscored questions and allows 105 minutes. Before test day, divide the available time by the number of questions in a timed practice set to establish a steady per-question pace. If a difficult item starts consuming too much time, mark it for review and move forward instead of losing momentum. A full timed practice session can help you decide when to move on, when to return, and how much buffer to reserve for a final check.
The passing score for JavaScript-Developer-I is 65%, and the official exam fee is USD 200 (+ applicable taxes). Because a retake requires paying the exam fee again, use timed practice results as a readiness check before scheduling your next attempt. If your performance remains inconsistent, continue reviewing weak domains and repeat a timed session before booking the exam.
No formal prerequisites; 1–2 years of JavaScript development experience recommended
Eligibility rules can change, so confirm the current requirements on the official exam page before registering.
You can register through the official channels listed below:
The available exam delivery method is Online proctored or onsite at authorized testing centers.
The official training options include:
After reviewing the recommended training, reinforce what you learned with ValidTorrent's 149 practice questions for JavaScript-Developer-I.
Yes. ValidTorrent provides a free PDF demo so you can review the format, question style, and answer quality before placing an order. Your purchase includes 365 days of free updates, and expired products can receive continued update service at a 50% discount.
If you purchase the corresponding JavaScript-Developer-I preparation material and do not pass that exam within 60 days of purchase, you may apply for a full refund under the 100% Money Back Guarantee. The request requires a scanned exam enrollment slip and the official Score Report PDF, submitted within two days after the exam. Eligible requests are processed within seven days.
Claims are not eligible if the exam was taken within three days of purchase, the product was downloaded without an exam attempt, the order was free or expired, or the candidate name does not match the payer name. If you prefer an exchange instead of a refund, you can receive two free products of equal value while keeping the update service for your original purchase.
Delivery is immediate after checkout. The download is available right away, and the product is also sent to your email within one minute. Contact customer support if it has not arrived within two hours. You may install the product on an unlimited number of computers.
The current JavaScript-Developer-I outline is organized into 7 top-level domains. The first listed areas include:
- Asynchronous Programming (13%)
- Server-Side JavaScript (8%)
- Objects, Functions, and Classes (25%)
Review the Exam Topics section above for the complete outline and any nested subtopics.
Salesforce Certified JavaScript Developer (JS-Dev-101) Sample Questions:
Question #1
Given the JavaScript below:
01 function filterDOM(searchString){
02 const parsedSearchString = searchString & & searchString.toLowerCase();
03 document.querySelectorAll( ' .account ' ).forEach(account = > {
04 const accountName = account.innerHTML.toLowerCase();
05 account.style.display = accountName.includes(parsedSearchString) ? /* Insert code here */;
06 });
07 }
Which code should replace the placeholder comment on line 05 to hide accounts that do not match the search string?
- A. ' visible ' : ' hidden '
- B. ' block ' : ' none '
- C. ' hidden ' : ' visible '
- D. ' none ' : ' block '
Correct Answer: B 🗳️
Explanation: Only visible for ValidTorrent members. You can sign-up / login (it's free).
Question #2
A developer publishes a new version of a package with bug fixes but no breaking changes. The old version number was 2.1.1.
What should the new package version number be based on semantic versioning?
- A. 2.2.1
- B. 2.1.2
- C. 2.2.0
- D. 3.1.1
Correct Answer: B 🗳️
Explanation: Only visible for ValidTorrent members. You can sign-up / login (it's free).
Question #3
A team at Universal Containers works on a big project and uses yarn to manage the project ' s dependencies.
A developer added a dependency to manipulate dates and pushed the updates to the remote repository. The rest of the team complains that the dependency does not get downloaded when they execute yarn .
What could be the reason for this?
- A. The developer added the dependency as a dev dependency, and YARN_ENV is set to production.
- B. The developer added the dependency as a dev dependency, and NODE_ENV is set to production.
- C. The developer missed the option --save when adding the dependency.
- D. The developer missed the option --add when adding the dependency.
Correct Answer: B 🗳️
Explanation: Only visible for ValidTorrent members. You can sign-up / login (it's free).
Question #4
Given the code below:
01 const delay = async delay = > {
02 return new Promise((resolve, reject) = > {
03 console.log(1);
04 setTimeout(resolve, delay);
05 });
06 };
07
08 const callDelay = async () = > {
09 console.log(2);
10 const yup = await delay(1000);
11 console.log(3);
12 };
13
14 console.log(4);
15 callDelay();
16 console.log(5);
What is logged to the console?
- A. 1 4 2 3 5
- B. 4 5 1 2 3
- C. 4 2 1 5 3
- D. 4 2 1 5 3
Correct Answer: C 🗳️
Explanation: Only visible for ValidTorrent members. You can sign-up / login (it's free).
Question #5
A developer wants to use a module named universalContainerslib and then call functions from it. How should a developer import every function from the module and then call the functions foo and bar?
- A. import {foo, bar} from ' /path/universalContainerslib.js ' ;
foo();
bar(); - B. import * from ' /path/universalContainerslib.js ' ;
universalContainerslib.foo();
universalContainerslib.bar(); - C. import all from ' /path/universalContainerslib.js ' ;
universalContainerslib.foo();
universalContainerslib.bar(); - D. import * as lib from ' /path/universalContainerslib.js ' ;
lib.foo();
lib.bar();
Correct Answer: D 🗳️
Explanation: Only visible for ValidTorrent members. You can sign-up / login (it's free).
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