Review Part 1

html / Javascript
No html on exam.



Variables
--Types
int, string, 


--Operations
int + string = string
12 + "Guzy" = "12Guzy"
12 + "2"  = "122"

38 + "1" + 7  = 3817
12 + 5 + "9"  = 179

"3" + 1 + 99  = 3199
"3" + (1 + 99) = 3100




Conditionals
--Boolean Math
Boolean Operators

AND 
both inputs T --> result is T
Example

T && T = T

T && F = F

F && F = F


OR
Either is T, then result is T

Example
T || F = T

!!!(F && T || !F) || T
= T



NOT
Opposite
!T = F
!F = T

Example
!(T || F && !F && T)
!(T)
= F




--If statements
mx = 100
my = 350
screen = 2
day = "Saturday"

if(mx > 400 && my < 200 && screen == 2 && day != 'Tuesday')

Solution

if(F && F && T && T)
--> does not run




if( cond1 )
else if ( cond2 )
else if ( cond3 )
else 

First condition to come up T, breaks the if statement. Will not check any further conditions.

cond1 = T
cond2 = F
cond3 = F

if(cond1){
   if(cond3){
      alert("Whoop!");
   }else{
      alert("There");

   }

}else if (cond2){
  alert("it");

}else{
  alert("is.");

}