Free Salesforce JS-Dev-101 Practice Exams Questions 2026 - TheExamsLabs

Start Preparation with the Latest and Real 100% Free Salesforce Certified Developer JS-Dev-101 Exam Dumps Questions Practice 2026

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Total 217 Questions | Updated On: May 21, 2026

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Question 1

Which three actions can be using the JavaScript browser console?

Choose 3 answers:

A : View and change DOM the page.

B : Display a report showing the performance of a page.

C : Run code that is not related to page.

D : view , change, and debug the JavaScript code of the page.

E : View and change security cookies.

Answer: A,C,D

Question 2

Refer to code below:

console.log(0);

setTimeout(() => (

console.log(1);

});

console.log(2);

setTimeout(() => {

console.log(3);

), 0);

console.log(4);

In which sequence will the numbers be logged?

A : 01234

B : 02431

C : 02413

D : 13024

Answer: C

Question 3

Given the code below:

01 function GameConsole (name) {

02 this.name = name;

03 }

05 GameConsole.prototype.load = function(gamename) {

06 console.log( ` $(this.name) is loading a game : $(gamename) ...`);

07 )

08 function Console 16 Bit (name) {

09 GameConsole.call(this, name) ;

10 }

11 Console16bit.prototype = Object.create ( GameConsole.prototype) ;

12 //insert code here

13 console.log( ` $(this.name) is loading a cartridge game : $(gamename) ...`);

14 }

15 const console16bit = new Console16bit(' SNEGeneziz ');

16 console16bit.load(' Super Nonic 3x Force ');

What should a developer insert at line 15 to output the following message using the

method ?

> SNEGeneziz is loading a cartridge game: Super Monic 3x Force . . .

A : Console16bit.prototype.load(gamename) = function() {

B : Console16bit.prototype.load = function(gamename) {

C : Console16bit = Object.create(GameConsole.prototype).load = function(gamename) {

D : Console16bit.prototype.load(gamename) {

Answer: B

Question 4

Refer to the code below:

let o = {

get js() {

let city1 = String('st. Louis');

let city2 = String(' New York');

return {

firstCity: city1.toLowerCase(),

secondCity: city2.toLowerCase(),

}

What value can a developer expect when referencing o.js.secondCity?

A : Undefined

B : ' new york '

C : ' New York '

D : An error

Answer: B

Question 5

Given the following code:

document.body.addEventListener(' click ', (event) => {

if (/* CODE REPLACEMENT HERE */) {

console.log('button clicked!');

)

});

Which replacement for the conditional statement on line 02 allows a developer to

correctly determine that a button on page is clicked?

A : Event.clicked

B : e.nodeTarget ==this

C : event.target.nodeName == 'BUTTON'

D : button.addEventListener('click')

Answer: C

Page: 1 / 44

Total 217 Questions | Updated On: May 21, 2026

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