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[General] Free PDF Quiz 2026 Trustable Salesforce JS-Dev-101 Reliable Exam Simulations

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【General】 Free PDF Quiz 2026 Trustable Salesforce JS-Dev-101 Reliable Exam Simulations

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Salesforce JS-Dev-101 Exam Syllabus Topics:
TopicDetails
Topic 1
  • Debugging and Error Handling: Covers proper error handling techniques and the use of the console and breakpoints to debug code.
Topic 2
  • Objects, Functions, and Classes: Covers function, object, and class implementations to meet business requirements, along with the use of modules, decorators, variable scope, and execution flow.
Topic 3
  • Asynchronous Programming: Covers asynchronous programming concepts and understanding how the event loop controls execution flow and determines outcomes.
Topic 4
  • Testing: Covers evaluating unit test effectiveness against a block of code and modifying tests to improve their coverage and reliability.

Salesforce Certified JavaScript Developer - Multiple Choice Sample Questions (Q112-Q117):NEW QUESTION # 112
A developer writers the code below to calculate the factorial of a given number.
Function factorial(number) {
Return number + factorial(number -1);
}
factorial(3);
What is the resultof executing line 04?
  • A. 0
  • B. 1
  • C. -Infinity
  • D. RuntimeError
Answer: D

NEW QUESTION # 113
A developer wrote the following code to test a sum3 function that takes in an array of numbers and returns the sum of the first three numbers in the array. The test passes:
01 let res = sum3([1, 2, 3]);
02 console.assert(res === 6);
03
04 res = sum3([1, 2, 3, 4]);
05 console.assert(res === 6);
A different developer made changes to the behavior of sum3 to instead sum all of the numbers present in the array.
Which two results occur when running the test on the updated sum3 function?
  • A. The line 05 assertion passes.
  • B. The line 02 assertion passes.
  • C. The line 05 assertion fails.
  • D. The line 02 assertion fails.
Answer: B,C
Explanation:
New behavior: sum3 now returns the sum of all elements.
Line 01: sum3([1, 2, 3]) → 1 + 2 + 3 = 6
Assertion on line 02: res === 6 → passes.
Line 04: sum3([1, 2, 3, 4]) → 1 + 2 + 3 + 4 = 10
Assertion on line 05: res === 6 → 10 === 6 is false, so the assertion fails.
So:
Line 02 assertion passes → D.
Line 05 assertion fails → C.
________________________________________

NEW QUESTION # 114
Given the following code:
is the output of line 02?
  • A. ''undefined''
  • B. ''x''
  • C. ''object''
  • D. ''null'''
Answer: C

NEW QUESTION # 115
Which two options are core Node.js modules?
Choose 2 answers
  • A. worker
  • B. http
  • C. isotream
  • D. exception
Answer: B,C

NEW QUESTION # 116
Refer to the code snippet:
01 let array = [1, 2, 3, 4, 4, 5, 4, 4];
02 for (let i = 0; i < array.length; i++) {
03 if (array === 4) {
04 array.splice(i, 1);
05 i--;
06 }
07 }
What is the value of array after the code executes?
  • A. [1, 2, 3, 4, 5, 4, 4]
  • B. [1, 2, 3, 4, 4, 5, 4]
  • C. [1, 2, 3, 5]
  • D. [1, 2, 3, 4, 5, 4]
Answer: C
Explanation:
Comprehensive and Detailed
The loop removes every 4:
Start: [1, 2, 3, 4, 4, 5, 4, 4]
i=0 → 1 (no change)
i=1 → 2 (no change)
i=2 → 3 (no change)
i=3 → 4 → splice removes index 3 → [1,2,3,4,5,4,4], then i-- → 2
Next loop, i=3 → 4 again → splice → [1,2,3,5,4,4], i-- → 2
i=3 → 5 (no change)
i=4 → 4 → splice → [1,2,3,5,4], i-- → 3
i=4 → 4 → splice → [1,2,3,5], i-- → 3
Next i=4, array.length is 4 → loop ends.
All 4s removed, final array: [1, 2, 3, 5].
________________________________________

NEW QUESTION # 117
......
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