Intro to JavaScript

What is a variable?

• Variables are keywords inside the program that break it.

• Variables are used to store information to be referenced and manipulated in a computer program.

• Variables boot the computer

• Variables are types of comparison operators

Why do we use JavaScript

• To make web pages more dynamic, user friendly and attractive

• To create domain names

• To host web sites

• To run databases on the web

What does '>' mean in JavaScript

• Less than

• Greater than

• Equal to

• Greater than and equal to

4 > 2

• True

• False

5 <= 5

• True

• False

What does % do in JavaScript

• Modulus - Finds the remainder of a division.

• Multiply - Multiplies a number

• Adds

• Subtracts

a = 5

b = 5

c = a + b

What is c?

• 10

• 25

• 0

• error

What does && mean in JavaScript?

• AND

• OR

• NOT

What does ! mean in JavaScript?

• NOT

• AND

• OR

Which statement is true about if statements

• They allow the program to make a decision and then follow those steps

• They create variables in the program

• They create databases