Digital Tech and Innovations Javascript Fundamentals Test

Question 1

What is the writing inside parenthesis called

Answer 1

An argument

Question 2

How do you make a comment javascript

Answer 2

//___

Question 3

How do you emphasize text
is this javascript or html?

Answer 3

<em></em> html

Question 4

how do you bold something?
Is this html or java?

Answer 4

<b></b> html

Question 5

What is a string literal

Answer 5

Anything in quotes

Question 6

What does string in string literal mean

Answer 6

Series of characters, they don’t havre to make sense

Question 7

What is Parenthisis and what is brackets

Answer 7

()
[]

Question 8

What is a method

Answer 8

A specific tool that does something extremely specififc (eg document.write())

Question 9

Everything inside partenthisis is called an ___

Answer 9

Argument

Question 10

What is variable declaration

Answer 10

When you declare or write a variable

Question 11

How do you declare a variable of var a

Answer 11

var a;

Question 12

What is variable initialization

Answer 12

Defining a varibale

Question 13

How do you do variable initilization of var a

Answer 13

var a = poo;

Question 14

A variable that does not have a value is ____

Answer 14

Undefined

Question 15

Can you declare and initialize at the same time

Answer 15

Yes

Question 16

What are camel cases

Answer 16

lower case then upper case letters to read something easier

Question 17

does case matter

Answer 17

yes

Question 18

Can you put spaces in variables

Answer 18

no

Question 19

Can variables begin with a number

Answer 19

no

Question 20

Can variables end with a number

Answer 20

yes

Question 21

Can variables contain symbols

Answer 21

No

Question 22

How do you ask the user a question?

Answer 22

var b = prompt()

Question 23

How do you output with a variable you just made

Answer 23

alert(“hi” + b)

Question 24

What is a floating point number

Answer 24

A number with decimals

Question 25

Whats the difference between 123 and “123”

Answer 25

123 is an integer and “123” is a string literal. Written out “123” would be 1,2,3

Question 26

What is an integer

Answer 26

A whole number

Question 27

What are the arithmetic operators?

Answer 27

+ - * /

Question 28

What is an operator

Answer 28

used to assign values, compare values, perform arithmetic operations, and more.

Question 29

What is the modulus operator

Answer 29

It returns the remainder of a division

Question 30

Example of modulus

Answer 30

var tot = 5/2
document.write( modulus)

Question 31

What does /t mean and where can you use it

Answer 31

tab forward
alert

Question 32

What does <br></br> mean and where can you use it

Answer 32

break/new line
document.write

Question 33

What is a shortcut of * something or adding something to a variable that you have defined

(also explain in long terms what this is written out as)

Answer 33

var score = 10

score *= 10
score /= 10

(score = score * 10)
(score = score / 10

Question 34

Whats an increment operator?
- example

Answer 34

• adding 1 to a variable

z++; instead of z = z+1

Question 35

Whats a decrement operator?
- example

Answer 35

• subtracting 1 from a variable

z–; instead of z = z-1

Question 36

What is a numerical literal

Answer 36

a literal saved as a number that you can perform operations with

Question 37

How do you change something from a string literal into a number

Answer 37

var b = Number(42)

Question 38

How do you make someting into a floating point #

Answer 38

var b = Parse.float(42)

Question 39

What is var b = Parse.float(42)

Answer 39

Turning a number into a floating poit number

Question 40

How do you make a number down to two decimal places

Answer 40

number.toFixed(2)

Question 41

How do you generate a random # between 0 and 1

Answer 41

var a = Math.random();

Question 42

How do you find the smallest # in a line of #’s

Answer 42

var b = Math.min(45, 34, 67, 90, 126, 54, 39, -19);

Question 43

How do you find the biggest # in a line full of #’s

Answer 43

var c = Math.max(45, 34, 67, 90, 126, 54, 39, -19);

Question 44

How do you round a number

Answer 44

var d = Math.round(4.7);

Question 45

How do you round a number always down

Answer 45

var e = Math.floor(4.7)

Question 46

How do you round a number always up

Answer 46

var f = Math.ceil(4.7)

Question 47

How do you generate pi

Answer 47

var g = Math.PI

Question 48

How do you power a number

Answer 48

var h = Math.pow(2,4)

Question 49

How do you generate a random number between 1 and 100?

Answer 49

var i = Math.floor(Math.random() * 100) + 1;