PDF Version DemoA Salesforce certification unlocks career development that stays locked without it. The Salesforce Certified JavaScript Developer - Multiple Choice exam is the key, and the 149 practice questions at ActualPDF are cut to fit it.
Salesforce JS-Dev-101 Exam Overview:
| Certification Vendor: | Salesforce |
|---|---|
| Exam Name: | Salesforce Certified JavaScript Developer - Multiple Choice |
| Exam Number: | JS-Dev-101 |
| Exam Price: | USD 200 |
| Exam Format: | Multiple select, Multiple choice |
| Passing Score: | 65% |
| Available Languages: | Japanese, English |
| Exam Duration: | 105 minutes |
| Related Certifications: | Salesforce Certified Platform Developer I Salesforce Certified Developer |
| Certificate Validity Period: | Does not expire; requires maintenance updates |
| Real Exam Qty: | 60 scored + up to 5 unscored |
| Recommended Training: | Trailhead JavaScript Developer I Certification Prep |
| Exam Registration: | Salesforce Certification Registration |
| Sample Questions: | DOWNLOAD DEMO |
| Exam Way: | Online proctored or onsite at authorized testing centers |
| Pre Condition: | No formal prerequisites; recommended: strong JavaScript fundamentals, ES6+ experience, web development familiarity |
| Official Syllabus URL: | https://trailheadacademy.salesforce.com/certificate/exam-javascript-dev---JS-Dev-101 |
Salesforce JS-Dev-101 Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Browser and Events | 17% | - Browser APIs and developer tools - DOM selection and manipulation - Event handling, propagation, listeners |
| Topic 2: Testing | 7% | - Test coverage and improvement - Unit test structure and effectiveness |
| Topic 3: Debugging and Error Handling | 7% | - Console usage, breakpoints and debugging techniques - Error types and handling strategies |
| Topic 4: Asynchronous Programming | 13% | - Callbacks, promises, async/await - Event loop and execution flow |
| Topic 5: Variables, Types, and Collections | 23% | - Variable declaration and scope - JSON parsing and manipulation - Strings, numbers, dates, arrays and methods - Data types, type coercion, truthy/falsy values |
| Topic 6: Server Side JavaScript | 8% | - Node.js fundamentals and core modules - Package management and CLI tools |
| Topic 7: Objects, Functions, and Classes | 25% | - ES6 classes, inheritance, modules, decorators - Function types, scope, closures, arrow functions - Object creation, properties, prototypes |
JS-Dev-101 (Salesforce) Exam FAQ: Trusted Answers
Salesforce Certified JavaScript Developer - Multiple Choice is an official Salesforce certification exam, registered under the code JS-Dev-101. Passing it awards the Salesforce Certified JavaScript Developer certification, a credential at the Intermediate / Specialist level. It also connects to Salesforce Certified Developer, Salesforce Certified Platform Developer I. The exam is demanding by design, and that difficulty is precisely what makes the credential meaningful for career development.
The Salesforce Certified JavaScript Developer - Multiple Choice exam presents 60 scored + up to 5 unscored questions within 105 minutes. That is a brisk pace, and the candidates who handle it best are the ones who rehearsed it. Use the ActualPDF engine for full timed simulations, practice flagging and returning, and arrive on exam day with a pacing strategy already proven.
Passing Salesforce Certified JavaScript Developer - Multiple Choice takes 65%, and official registration costs USD 200. Retakes bill the full USD 200 again, so preparation is the least expensive insurance available. Let your ActualPDF practice scores guide the timing: book when you clear the requirement consistently, not occasionally.
No formal prerequisites; recommended: strong JavaScript fundamentals, ES6+ experience, web development familiarity
Policies get revised, so confirm the current requirements before you register on the official exam page.
Salesforce Certified JavaScript Developer - Multiple Choice registration is handled through the official channels below.
For scheduling purposes: the exam is delivered Online proctored or onsite at authorized testing centers.
Yes, Salesforce recommends the following training for Salesforce Certified JavaScript Developer - Multiple Choice candidates.
Complement any training with the 149 practice questions in the ActualPDF JS-Dev-101 package, because repeated application is what turns course knowledge into a passing score.
Yes. ActualPDF offers a free demo of the Salesforce Certified JavaScript Developer - Multiple Choice questions, so you can verify the quality personally before purchasing. Your purchase then includes a one-year service warranty: updates are free for 365 days, and after expiry you can extend the update service at a 50% discount.
Your money is protected by a 100% money-back guarantee with defined conditions. Take the Salesforce Certified JavaScript Developer - Multiple Choice exam within 60 days of purchase; if you fail, you may claim a full refund, provided the exam matches your product. Attempts within 3 days of purchase are ineligible, as are downloaded-but-unused products, free materials, and expired orders; the candidate name must match the payer name. Submit a scanned enrollment slip and the official Score Report PDF within 2 days of the exam, and claims are processed within 7 days. You may instead wait for the update version or change to other exam material: exchange for two other exam products of equal value, free, with your original purchase keeping its update service.
Delivery is instant: files unlock for download at payment and are emailed within one minute. If nothing arrives within 2 hours, check spam and contact customer service, online 7/24 even on official holidays. Installation is unlimited across your computers.
Salesforce Certified JavaScript Developer - Multiple Choice is organized into 7 official domains. The most heavily weighted are Objects, Functions, and Classes (25%), Testing (7%), and Server Side JavaScript (8%). The full breakdown appears above on this page; study the weightings and your preparation priorities set themselves.
Salesforce Certified JavaScript Developer - Multiple Choice Sample Questions:
01 function Monster() { this.name = 'hello'; };
02 const m = Monster();
What happens due to the missing new keyword?
- A. The m variable is assigned the correct object but this.name remains undefined.
- B. The m variable is assigned the correct object.
- C. window.m is assigned the correct object.
- D. window.name is assigned to 'hello' and the variable m remains undefined.
Correct Answer: D 🗳️
Explanation: Only visible for ActualPDF members. You can sign-up / login (it's free).
Refer to the following code:
<html lang="en">
<body>
<button class="secondary">Save draft</button>
<button class="primary">Save and close</button>
</body>
<script>
function displaySaveMessage(event) {
console.log('Save message.');
}
function displaySuccessMessage(event) {
console.log('Success message.');
}
window.onload = function() {
document.querySelector('.secondary')
.addEventListener('click', displaySaveMessage, true);
document.querySelector('.primary')
.addEventListener('click', displaySuccessMessage, true);
}
</script>
</html>
- A. > Inner message
Outer message - B. > Outer message
Inner message - C. > Outer message
- D. > Inner message
Correct Answer: B 🗳️
Explanation: Only visible for ActualPDF members. You can sign-up / login (it's free).
A developer is creating a simple webpage with a button. When a user clicks this button for the first time, a message is displayed.
The developer wrote the JavaScript code below, but something is missing. The message gets displayed every time a user clicks the button, instead of just the first time.
01 function listen(event) {
02
03 alert('Hey! I am John Doe');
04
05 }
06 button.addEventListener('click', listen);
Which two code lines make this code work as required?
- A. On line 04, use button.removeEventListener('click', listen);
- B. On line 02, use event.first to test if it is the first execution.
- C. On line 04, use event.stopPropagation();
- D. On line 06, add an option called once to button.addEventListener().
Correct Answer: A,D 🗳️
Explanation: Only visible for ActualPDF members. You can sign-up / login (it's free).
Refer to the code snippet:
01 function getAvailableilityMessage(item) {
02 if (getAvailableility(item)) {
03 var msg = "Username available";
04 }
05 return msg;
06 }
What is the return value of msg when getAvailableilityMessage("newUserName") is executed and getAvailableility("newUserName") returns false?
- A. undefined
- B. "Username available"
- C. "newUserName"
- D. "msg is not defined"
Correct Answer: A 🗳️
Explanation: Only visible for ActualPDF members. You can sign-up / login (it's free).
Given the code below:
01 function Person(name, email) {
02 this.name = name;
03 this.email = email;
04 }
05
06 const john = new Person('John', '[email protected]');
07 const jane = new Person('Jane', '[email protected]');
08 const emily = new Person('Emily', '[email protected]');
09
10 let usersList = [john, jane, emily];
Which method can be used to provide a visual representation of the list of users and to allow sorting by the name or email attribute?
- A. console.info(usersList);
- B. console.group(usersList);
- C. console.groupCollapsed(usersList);
- D. console.table(usersList);
Correct Answer: D 🗳️
Explanation: Only visible for ActualPDF members. You can sign-up / login (it's free).
