Pdf JS-Dev-101 Dumps - JS-Dev-101 Test Prep

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Salesforce JS-Dev-101 Exam Overview:

Certification Vendor:	Salesforce
Exam Name:	Salesforce Certified JavaScript Developer I - Multiple Choice Exam (JS-Dev-101)
Exam Number:	JS-Dev-101
Passing Score:	65%
Exam Format:	Multiple Select Questions, Multiple Choice Questions
Real Exam Qty:	60 (multiple choice)
Exam Price:	$200 USD
Exam Duration:	105 minutes
Related Certifications:	Salesforce Platform Developer II Salesforce Platform Developer I
Certificate Validity Period:	1 year (maintenance required annually in Salesforce certification program)
Available Languages:	English
Recommended Training:	MDN Web Docs - JavaScript Guide Salesforce Trailhead - JavaScript Developer I
Exam Registration:	Salesforce Certification Registration Kryterion Webassessor (Exam Delivery)
Sample Questions:	Salesforce JS-Dev-101 Sample Questions
Exam Way:	Online proctored exam via Salesforce authorized testing platform (e.g., Webassessor)
Pre Condition:	No formal prerequisites, but familiarity with JavaScript and web development is recommended.
Official Syllabus URL:	https://trailhead.salesforce.com/credentials/javascriptdeveloper

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JS-Dev-101 Test Prep | Pdf JS-Dev-101 Version

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Salesforce JS-Dev-101 Exam Syllabus Topics:

Topic	Details
Topic 1	Browser and Events: Covers DOM manipulation, event handling and propagation, browser-specific APIs, and using Browser Developer Tools to inspect code behavior.
Topic 2	Debugging and Error Handling: Covers proper error handling techniques and the use of the console and breakpoints to debug code.
Topic 3	Asynchronous Programming: Covers asynchronous programming concepts and understanding how the event loop controls execution flow and determines outcomes.

Salesforce Certified JavaScript Developer - Multiple Choice Sample Questions (Q96-Q101):

NEW QUESTION # 96
Which two implementations of utils.js support foo and bar?

A. const foo = () => { return 'foo'; }
const bar = () => { return 'bar'; }
export default {foo, bar};
B. const foo = () => { return 'foo'; }
const bar = () => { return 'bar'; }
export {foo, bar};
C. import {foo} from "./helpers/utils.js";
export {foo, bar};
D. export default class {
foo() { return 'foo'; }
bar() { return 'bar'; }

Answer: B,D

Explanation:
}

NEW QUESTION # 97
Refer to the code below:
01 <html lang="en">
02 <table onclick="console.log('Table log');">
03 <tr id="row1">
04 <td>Click me!</td>
05 </tr>
06 </table>
07 <script>
08 function printMessage(event) {
09 console.log('Row log');
10 event.stopPropagation();
11 }
12
13 let elem = document.getElementById('row1');
14 elem.addEventListener('click', printMessage, false);
15 </script>
16 </html>
Which code change should be done for the console to log the following when "Click me!" is clicked?
Row log
Table log

A. Change line 10 to event.stopPropagation(false);
B. Remove lines 13 and 14
C. Change line 14 to elem.addEventListener('click', printMessage, true);
D. Remove line 10

Answer: D

Explanation:
Current behavior:
Clicking <td> triggers the click event on row1, then bubbles up to <table>.
printMessage runs, logs "Row log", then event.stopPropagation() stops the event from bubbling to the table.
So "Table log" never appears.
To allow the table's inline onclick to run after the row handler:
Remove the propagation stop:
function printMessage(event) {
console.log('Row log');
// event.stopPropagation(); // remove this
}
Now the event bubbles:
printMessage logs "Row log".
The table's onclick runs, logging "Table log".
Option A only changes capture/bubble phase but still stops propagation. C does nothing meaningful (stopPropagation takes no arguments). B removes the row handler entirely.

NEW QUESTION # 98
Value of:
true + 3 + '100' + null

A. "4100null"
B. 0
C. "2200null"
D. "4100"

Answer: A

Explanation:
The correct answer is A.
JavaScript evaluates the expression from left to right:
true + 3 + '100' + null
Step 1:
true + 3
In numeric addition, true is converted to:
1
So:
true + 3
becomes:
1 + 3
Result:
4
Step 2:
4 + '100'
Because one operand is a string, JavaScript performs string concatenation instead of numeric addition.
So:
4 + '100'
becomes:
"4100"
Step 3:
"4100" + null
Again, because one operand is already a string, JavaScript converts null into the string:
"null"
So the final result is:
"4100null"
Execution summary:
true + 3 + '100' + null
// 1 + 3 + '100' + null
// 4 + '100' + null
// "4100" + null
// "4100null"
Therefore, the verified answer is A.

NEW QUESTION # 99
A developer has the following array of student test grades:
Let arr = [ 7, 8, 5, 8, 9 ];
The Teacher wants to double each score and then see an array of the students who scored more than 15 points.
How should thedeveloper implement the request?

A. Let arr1 = arr.map((num) => ( num *2)).filterBy((val) => ( val >15 ));
B. Let arr1 = arr.map((num) => num*2). Filter (( val) => val > 15);
C. Let arr1 = arr.filter(( val) => ( return val > 15 )) .map (( num) => ( return num *2 ))
D. Let arr1 = arr.mapBy (( num) => ( return num *2 )) .filterBy (( val ) => return val > 15 )) ;

Answer: B

NEW QUESTION # 100
Universal Containers (UC) just launched anew landing page, but users complain that the website is slow. A developer found some functions any that might cause this problem. To verify this, the developer decides to execute everything and log the time each of these three suspicious functions consumes.
Which function can the developer use to obtain the time spent by every one of the three functions?

A. console.getTime ()
B. console. timeLog ()
C. console.trace()
D. console.timeStamp ()

Answer: B

NEW QUESTION # 101
......

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P.S. Free 2026 Salesforce JS-Dev-101 dumps are available on Google Drive shared by VCEDumps: https://drive.google.com/open?id=1g3uFT3fodlnIcKvHra2f0XhRZesiP-Wj