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JavaScript-Developer-I Practice Questions

Question # 1

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



C.

02413



Question # 2

Which javascript methods can be used to serialize an object into a string and deserialize a JSON string into an object, respectively?

A.

JSON.stringify and JSON.parse

B.

JSON.serialize and JSON.deserialize

C.

JSON.encode and JSON.decode

D.

JSON.parse and JSON.deserialize



A.

JSON.stringify and JSON.parse



Question # 3

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



B.

‘ new york ’



Question # 4

Considering type coercion, what does the following expression evaluate to?
True + ‘13’ + NaN

A.

‘ 113Nan ’

B.

14

C.

‘ true13 ’

D.

‘ true13NaN ’



D.

‘ true13NaN ’



Question # 5

A developer is leading the creation of a new browser application that will serve a single
page application. The team wants to use a new web framework Minimalsit.js. The Lead
developer wants to advocate for a more seasoned web framework that already has a
community around it.
Which two frameworks should the lead developer advocate for?
Choose 2 answers

A.

Vue

B.

Angular

C.

Koa

D.

Express



B.

Angular


D.

Express



Question # 6

Given the following code:

What will be the first four numbers logged?

A.

0012

B.

0112

C.

0122

D.

0123



B.

0112



Question # 7

In the browser, the window object is often used to assign variables that require the
broadest scope in an application Node.js application does not have access to the window
object by default.
Which two methods are used to address this ?
Choose 2 answers

A.

Use the document object instead of the window object.

B.

Assign variables to the global object.

C.

Create a new window object in the root file.

D.

Assign variables to module.exports and require them as need



B.

Assign variables to the global object.



Question # 8

Given the JavaScript below:

Which code should replace the placeholder comment on line 05 to highlight accounts that
match the search string'

A.

'yellow' : null

B.

null : 'yellow’

C.

'none1 : "yellow’

D.

'yellow : 'none'



D.

'yellow : 'none'



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Salesforce JavaScript-Developer-I Exam Dumps

Exam Name: Salesforce Certified JavaScript Developer I (SU24)
Certification Name: Salesforce Developer

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  • Total Questions: 215
  • Last Updation Date: 17-Feb-2025

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