Question 1

The result of the operation false || "false" will be:

Options :

A : false

B : true

C : false

D : 0

Answer: A

Question 2

Analyze the following code:let id = "100";{ let id = 200; id = id + 1; console.log(id)}What will appear in the console as a result?

Options :

A : 1001

B : 201

C : 101

D : 200

Answer: B

Question 3

Handling an exception thrown by the interpreter with catch causes:

Options :

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 codewe 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

Which sequence of if ... else statements is incorrect?

Options :

A : if ... else if ...

B : if ... else ...

C : if ... else ... else ...

D : if ... else if ... else ...

Answer: C

Question 5

The minimum JavaScript online development environment will consist of:(Select two correct answers)

Options :

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

Free JSE-40-01 Mock Exam – Practice Online Confidently