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Total 65 questions
Exam Code: JavaScript-Developer-I                Update: Nov 30, 2025
Exam Name: Salesforce Certified JavaScript Developer (JS-Dev-101)
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Salesforce Salesforce Certified JavaScript Developer (JS-Dev-101) JavaScript-Developer-I Exam Dumps: Updated Questions & Answers (November 2025)

Question # 1

Which code statement below correctly persists an objects inlocal Storage ?

A.

const setLocalStorage = (storageKey, jsObject) => {window.localStorage.setItem(storageKey, JSON.stringify(jsObject));}

B.

const setLocalStorage = ( jsObject) => {window.localStorage.connectObject(jsObject));}

C.

const setLocalStorage= ( jsObject) => {window.localStorage.setItem(jsObject);}

D.

const setLocalStorage = (storageKey, jsObject) => {window.localStorage.persist(storageKey, jsObject);}

Question # 2

Refer to the following code:

What will the console show when the button is clicked?

A.

Outer message

B.

Outer messageInner message

C.

Inner messageOuter message

D.

Inner message

Question # 3

Refer to the code below:

Function Person(firstName, lastName, eyecolor) {

this.firstName =firstName;

this.lastName = lastName;

this.eyeColor = eyeColor;

}

Person.job = ‘Developer’;

const myFather = new Person(‘John’, ‘Doe’);

console.log(myFather.job);

What is the output after the code executes?

A.

ReferenceError: eyeColor is not defined

B.

ReferenceError: assignment to undeclared variable “Person”

C.

Developer

D.

Undefined

Question # 4

Whichthree 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 ofthe page.

E.

View and change security cookies.

Question # 5

Refer to the code below:

Click me!

Which code change should be made for the console to log only Row log when ‘Click me! ’ is

clicked?

A.

Add.event.stopPropagation(); to window.onLoad event handler.

B.

Add event.stopPropagation(); to printMessage function.

C.

Add event.removeEventListener(); to window.onLoad event handler.

D.

Add event.removeEventListener(); toprintMessage function.

Question # 6

A developer has an ErrorHandler module that contains multiple functions.

What kind of export should be leveraged so that multiple functions can be used?

A.

all

B.

named

C.

multi

D.

default

Question # 7

What is the result of the code block?

A.

The console logs only ‘flag’.

B.

The console logs ‘flag’ and another flag.

C.

An error is thrown.

D.

The console logs ‘flag’ and then an error is thrown.

Question # 8

Given the following code:

is the output of line 02?

A.

''x''

B.

''null'''

C.

''object''

D.

''undefined''

Question # 9

A developer wrote a fizzbuzz function thatwhen passed in a number, returns the

following:

● ‘Fizz’ if the number is divisible by 3.

● ‘Buzz’ if the number is divisible by 5.

● ‘Fizzbuzz’ if the number is divisible by both 3 and 5.

● Empty string if the number is divisible by neither 3 or 5.

Whichtwo test cases will properly test scenarios for the fizzbuzz function?

Choose 2 answers

A.

let res = fizzbuzz(5);console.assert ( res === ‘ ’ );

B.

let res = fizzbuzz(15);console.assert ( res === ‘ fizzbuzz ’ )

C.

let res = fizzbuzz(Infinity);console.assert ( res === ‘ ’ )

D.

let res = fizzbuzz(3);console.assert ( res === ‘ buzz ’ )

Question # 10

Given the following code:

Let x =null;

console.log(typeof x);

What is the output of the line 02?

A.

“Null”

B.

“X”

C.

“Object”

D.

“undefined”

Page: 1 / 7
Total 65 questions
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