Practice JSE-40-01 Exam Online

Question 1

Review the following code (note the variable name)let height = 170;

height = height + 10;

console.log(Height);

As a result of its execution, the following should appear in the console:

A : "Height"

B : 180

C : "Uncaught ReferenceError: Height is not defined"

D : 170

Answer: C

Question 2

What does shadowing mean?

A : Declaring a local variable with the same name

as the previously declared global variable.

B : Declaring a global variable with the same name

as a previously declared global variable.

C : Deleting and rewriting a selected piece of program code.

D : Changing the value of a variable.

Answer: A

Question 3

Handling an exception thrown by the interpreter with catch causes:

A : the execution of the program to be automatically aborted,

but we can generate our own error message

(not necessarily in the console)

B : further executing of the program to depend on the code

we place in the execution handler.

C : the program to continue executing until the last instruction,

but we can generate our own error message

(not necessarily in the console).

D : nothing to happen, because catch is not used for exception handling.

Answer: B

Question 4

Analyze the code snippet:

let n = 5 + 2 ** 2 * 3;

The result stored in the variable n is:

A : 42

B : 117649

C : 84

D : 17

Answer: D

Question 5

The minimum JavaScript online development environment will consist of:

(Select two correct answers)

A : a forum for developers to exchange information only

B : an online code editor

C : an interactive page with JavaScript documentation

D : the runtime environment

Answer: B,D

Name:	JSE Certified Entry-Level JavaScript Programmer
Exam Code:	JSE-40-01
Certification:	JavaScript
Vendor:	JS Institute
Total Questions:	263
Last Updated:	May 05, 2026

JS Institute JSE-40-01 Answers