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  • Questions: 219 Q&A's With Detailed Explanation
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  • Exam Name: Salesforce Certified JavaScript Developer (JS-Dev-101)
  • Last Update: 16-Oct-2025
  • Questions and Answers: 219
  • Single Choice: 161 Q&A's
  • Multiple Choice: 51 Q&A's

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JavaScript-Developer-I Questions and Answers

Question # 1

Refer to the code below:

let timeFunction =() => {

console.log(‘Timer called.”);

};

let timerId = setTimeout (timedFunction, 1000);

Which statement allows a developer to cancel the scheduled timed function?

A.

removeTimeout(timedFunction);

B.

removeTimeout(timerId);

C.

clearTimeout(timerId);

D.

clearTimeout(timedFunction);

Question # 2

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 * from '/path/universalContainersLib.js';universalContainersLib. foo ()7universalContainersLib.bar ();

B.

import {foo,bar} from '/path/universalCcontainersLib.js';foo():bar()?

C.

import all from '/path/universalContainersLib.js';universalContainersLib.foo();universalContainersLib.bar ();

D.

import * as lib from '/path/universalContainersLib.js';lib.foo();lib. bar ();

Question # 3

A developer has the following array of hourly wages:

Let arr = (8, 5, 9, 75, 11, 25, 7, 75, , 13, 25);

For workers making less than $10 an hour rate should be multiple by 1.25 and returned in a new array.

How should the developer implement the request?

A.

let arrl = arr.filter((val) => val < 10).map((num) -> num = 1.25);

B.

let arrl = arr .rr.acArray ((val) => ( val < 10 )) ,map((num) => { num * 1.25 ));

C.

let arrl = arr-map((num) => { return ran * 1.25 }).filter((val) -> { return val < 10));

D.

let arrl = arr.filterBy((val) => val < 10 ).aapBy<(num) -> num = ..25 );

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JavaScript-Developer-I Testimonials

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be  Cameron
posted on 22-Sep-2025
5 Stars

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nr  Smith
posted on 20-Sep-2025
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profile 3
mk  Willey
posted on 04-Sep-2025
5 Stars

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