Most Recent Salesforce Javascript-Developer-I Exam Dumps

Prepare for the Salesforce Certified JavaScript Developer (old) exam with our extensive collection of questions and answers. These practice Q&A are updated according to the latest syllabus, providing you with the tools needed to review and test your knowledge.

QA4Exam focus on the latest syllabus and exam objectives, our practice Q&A are designed to help you identify key topics and solidify your understanding. By focusing on the core curriculum, These Questions & Answers helps you cover all the essential topics, ensuring you're well-prepared for every section of the exam. Each question comes with a detailed explanation, offering valuable insights and helping you to learn from your mistakes. Whether you're looking to assess your progress or dive deeper into complex topics, our updated Q&A will provide the support you need to confidently approach the Salesforce Javascript-Developer-I exam and achieve success.

The questions for Javascript-Developer-I were last updated on Apr 21, 2026.

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Question No. 1

Refer to thefollowing code that imports a module named utils:

import (foo, bar) from '/path/Utils.js';

foo() ;

bar() ;

Which two implementations of Utils.js export foo and bar such that the code above runs without

error?

Choose 2 answers

A// FooUtils.js and BarUtils.js existImport (foo) from '/path/FooUtils.js';Import (boo) from ' /path/NarUtils.js';

Bconst foo = () => { return 'foo' ; }const bar = () => { return 'bar' ; }export { bar, foo }

CExport default class {foo() { return 'foo' ; }bar() { return 'bar' ; }}

Dconst foo = () => { return 'foo';}const bar = () => {return 'bar'; }Export default foo, bar;

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Correct Answer: B, C

Question No. 2

Refer to the following code:

Let obj ={

Foo: 1,

Bar: 2

}

Let output =[],

for(let something in obj{

output.push(something);

}

console.log(output);

What is the output line 11?

A[1,2]

B[''bar'',''foo'']

C[''foo'',''bar'']

D[''foo:1'',''bar:2'']

Show Answer

Correct Answer: C

Question No. 3

Refer to HTML below:

This card is smaller.

The width and height of this card is determined by its

contents.

Which expression outputs the screen width of the element with the ID card-01?

Adocument.getElementById(' card-01 ').getBoundingClientRest().width

Bdocument.getElementById(' card-01 ').style.width

Cdocument.getElementById(' card-01 ').width

Ddocument.getElementById(' card-01 ').innerHTML.lenght*e

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Correct Answer: A

Question No. 4

Refer to the following code:

01 function Tiger(){

02this.Type = 'Cat';

03 this.size = 'large';

04 }

06 let tony = new Tiger();

07 tony.roar = () =>{

08 console.log('They\'re great1');

09 };

11 function Lion(){

12 this.type = 'Cat';

13 this.size = 'large';

14 }

16 let leo = new Lion();

17 //Insertcode here

18 leo.roar();

Which two statements could be inserted at line 17 to enable the function call on line 18?

Choose 2 answers.

ALeo.roar = () => { console.log('They\'re pretty good:'); };

BObject.assign(leo,Tiger);

CObject.assign(leo,tony);

DLeo.prototype.roar = () => { console.log('They\'re pretty good:'); };

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Correct Answer: A, C

Question No. 5

Which function should a developer use to repeatedly execute code at a fixed interval ?

AsetIntervel

BsetTimeout

CsetPeriod

DsetInteria

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Correct Answer: A

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