Prepare with Salesforce JS-Dev-101 exam torrent, pass for sure
Updated: Oct 23, 2026
No. of Questions: 149 Questions & Answers with Testing Engine
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Salesforce JS-Dev-101 Exam Overview:
| Certification Vendor: | Salesforce |
|---|---|
| Exam Name: | Salesforce Certified JavaScript Developer I |
| Exam Number: | JS-Dev-101 |
| Available Languages: | English |
| Related Certifications: | Lightning Web Components Specialist Superbadge Salesforce Certified JavaScript Developer I |
| Passing Score: | 65% |
| Exam Price: | $200 USD |
| Exam Format: | Multiple Select, Multiple Choice |
| Certificate Validity Period: | Lifetime (No renewal required) |
| Real Exam Qty: | 60 (plus up to 5 unscored pilot questions) |
| Exam Duration: | 105 minutes |
| Sample Questions: | Salesforce JS-Dev-101 Sample Questions |
| Exam Way: | Online (Proctored) |
| Pre Condition: | Completion of the Lightning Web Components Specialist Superbadge is required to earn the full credential, though it can be completed before or after the exam. |
| Official Syllabus URL: | https://trailhead.salesforce.com/en/credentials/javascriptdeveloperi |
Salesforce JS-Dev-101 Exam Syllabus Topics:
| Topic | Details |
|---|---|
| Topic 1 |
|
| Topic 2 |
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| Topic 3 |
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Reference: https://trailheadacademy.salesforce.com/certificate/exam-javascript-dev---JS-Dev-101
Salesforce Certified JavaScript Developer - Multiple Choice Sample Questions:
Refer to the code below:
flag();
function flag() {
console.log('flag');
}
const anotherFlag = () => {
console.log('another flag');
}
anotherFlag();
What is result of the code block?
- A. An error is thrown.
- B. The console logs 'flag' and 'another flag'.
- C. The console logs 'flag' and then an error is thrown.
- D. The console logs only 'flag'.
Correct Answer: B 🗳️
Explanation: Only visible for Test4Sure members. You can sign-up / login (it's free).
01 function changeValue(obj) {
02 obj.value = obj.value / 2;
03 }
04 const objA = { value: 10 };
05 const objB = objA;
06
07 changeValue(objB);
08 const result = objA.value;
What is the value of result?
- A. 10
- B. undefined
- C. NaN
- D. 5
Correct Answer: D 🗳️
Explanation: Only visible for Test4Sure members. You can sign-up / login (it's free).
A developer wants to use a module called DatePrettyPrint.
This module exports one default function called printDate().
How can the developer import and use printDate()?
- A. import DatePrettyPrint from '/path/DatePrettyPrint.js';
DatePrettyPrint.printDate(); - B. import DatePrettyPrint() from '/path/DatePrettyPrint.js';
printDate(); - C. import printDate from '/path/DatePrettyPrint.js';
printDate(); - D. import printDate from '/path/DatePrettyPrint.js';
DatePrettyPrint.printDate();
Correct Answer: C 🗳️
Explanation: Only visible for Test4Sure members. You can sign-up / login (it's free).
Which actions can be done using the JavaScript browser console?
- A. View and change the DOM of the page
- B. Display a report showing the performance of a page
- C. Run code that's not related to the page
- D. Change the DOM and the JavaScript code of the page
- E. View and change security cookies
Correct Answer: A 🗳️
Explanation: Only visible for Test4Sure members. You can sign-up / login (it's free).
Why does second have access to variable a?
- A. Prototype Chain
- B. Inner function's scope
- C. Hoisting
- D. Outer function's scope
Correct Answer: D 🗳️
Explanation: Only visible for Test4Sure members. You can sign-up / login (it's free).
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