JS

Question 1

Give 6 examples of comparison operators.

Answer 1

!= , ====, == !==, < ,>

Question 2

What data type do comparison expressions evaluate to?

Answer 2

Boolean

Question 3

What is the purpose of an if statement?

Answer 3

Execute a condition if a statement exists

Question 4

Is else required in order to use an if statement?

Answer 4

no

Question 5

Describe the syntax (structure) of an if statement.

Answer 5

if () {}

Question 6

What are the three logical operators?

Answer 6

&&, I I,!

Question 7

How do you compare two different expressions in the same condition?

Answer 7

logical and non logical

Question 8

Why do we log things to the console?

Answer 8

to check for errors to fix in the code

Question 9

What is a method?

Answer 9

a method is a function which is a property of an object

Question 10

How is a method different from any other function?

Answer 10

a method is a built it in task

Question 11

How do you remove the last element from an array?

Answer 11

arra.pop()

Question 12

How do you round a number down to the nearest integer?

Answer 12

Math.floor()

Question 13

How do you generate a random number?

Answer 13

Math.Random

Question 14

How do you delete an element from an array?

Answer 14

splice and pop

Question 15

How do you append an element to an array?

Answer 15

.push

Question 16

How do you break a string up into an array?

Answer 16

split

Question 17

Do string methods change the original string? How would you check if you weren’t sure?

Answer 17

nope, console.log