Free Salesforce DEX602 Practice Exams Questions 2026 - TheExamsLabs

Start Preparation with the Latest and Real 100% Free Javascript Developer DEX602 Exam Dumps Questions Practice 2026

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Total 217 Questions | Updated On: May 22, 2026

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Question 1

Refer to the code below?

Let searchString = ' look for this ';

Which two options remove the whitespace from the beginning of searchString?

Choose 2 answers

A : searchString.trimEnd();

B : searchString.trimStart();

C : trimStart(searchString);

D : searchString.replace(/*\s\s*/, '');

Answer: B,D

Question 2

Refer to the code below:

function changeValue(param) {

Param =5;

}

Let a =10;

Let b =5;

changeValue(b);

Const result = a+ '' - ''+ b;

What is the value of result when code executes?

A : 10 -10

B : 5 -5

C : 5 - 10

D : 10 - 5

Answer: A

Question 3

Refer to HTML below:

The current status of an Order: <span id =''status''> In Progress </span>

Which JavaScript statement changes the text 'In Progress' to 'Completed' ?

A : document.getElementById(''status'').Value = 'Completed' ;

B : document.getElementById(''#status'')[removed] = 'Completed' ;

C : document.getElementById(''status'')[removed] = 'Completed' ;

D : document.getElementById(''.status'')[removed] = 'Completed' ;

Answer: C

Question 4

A developer has a web server running with Node.js. The command to start the web server is node server.js. The web server started having

latency issues. Instead of a one second turnaround for web requests, the developer now sees a five second turnaround.

Which command can the web developer run to see what the module is doing during the latency period?

A : NODE_DEBUG=true node server.js

B : DEBUG=http, https node server.js

C : NODE_DEBUG=http,https node server.js

D : DEBUG=true node server.js

Answer: D

Question 5

Given two expressions var1 and var2. What are two valid ways to return the logical AND

of the two expressions and ensure it is data type Boolean ?

Choose 2 answers:

A : Boolean(var1 && var2)

B : var1 && var2

C : var1.toBoolean() && var2toBoolean()

D : Boolean(var1) && Boolean(var2)

Answer: A,D

Page: 1 / 44

Total 217 Questions | Updated On: May 22, 2026

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