Conditional Statements If/Else

These are conditional statements. They return a particular task like functions. However, the task depends upon on the circumstance of the Boolean operator .

What are Booleans?

A Boolean has only two values True or False | Yes or No. It works by using Comparison and Logical Operators for the particular task.

The Boolean will ask questions. Is C > D? If yes it will return the value “True” if no it will read “False”.

Let’s Practice The Boolean Operator

1. Create a Text Layer
2. Open the Source Text and click on the Stop Watch
3. Type 3 > 5
   • You are asking, is 3 greater than 5 ?
4. Hit the return key and After Effects will read your expression.
   • The response is False
5. Then go back and type 3 < 2
   • Is 3 greater than 2 ?
   • The response is True

Comparison Operators

Comparison Operators are similar to mathematical symbols, but slightly different.

Operator Signs	What Does It Mean?	Example	Result
==	Equal to each other?	4 == 1	false
>	Greater than	5 > 9	false
<	Less than	6 < 9	true
> =	Greater than or equal	7 > = 9	false
< =	Less than or equal	8 < = 9	true
! =	Not Equal	5 != 6	true

Basic formula

• if (Condition) {Condition True: Result 1;
• } else {
• the Condition is False: Result 2;
• }

What if you have more than one Condition?

Then you will add to conditional statements, a Logical Operator sign. It allows you to connect 2 Conditions and will result in either True or False.

Logical Operator Have 3 Types

Logical Operators	How Does It Work?	Example
&&	And Operator: It checks both conditions to see if they are true. If both are true then it will work, but if either conditions are false it will be false.	(3 > 7) && ( 5 > 2) = False
||	Or Operator: Checks to see if either condition is true. It will output the task.	(1 < 0.5) || ( 2 > 1) = True, because two is greater than one.
!	Not Operator: It inverts the statement and sets it false if it is true and vice versa.	!true = false !false = true

A Conditional Statement with 2 Conditions

1. Create at Rectangle Layer
2. Open the Opacity Property and click on the Stop-Watch
3. Type r = and use the pick whip tool to the rotation property.
   • It should read r = transform.rotation;
4. Next line type the Conditional Statement
   • if (( r > 10 ) && (r < 50)) {100} else {0};
5. It reads if the rectangle rotation is greater than 10 degrees and less than 50 degrees have the opacity property to be 100% if neither put it at 0%;