1. JavaScript conditional

2. Boolean Logic Basis for modern computer logic
George Boole
Basis for modern computer logic
Works with only two values
George Boole was an english mathematician and philosopher. Born 1815, died 1864.

3. BOOLEAN VARIABLE OR EXPRESSION
Holds either true or false can pass as a literal Can be thought of as yes or no
Open excel – type true or false into a cell, and show that excel automatically capitlizes & centers it. TRUE & FALSE are special values in excel.

4. Is greater than or equal to
Boolean expressions
Creates a Boolean value from numbers or strings
Operator
Meaning ==
Is equal to !=
Is not equal
>
Is greater than
<
Is less than
>=
Is greater than or equal to
<=
Is less than or equal to

5. Conditionals Test if a Boolean expression is true or false
Allows a program to make a choice

6. IF … THEN … ELSE if (MUST BE LOWERCASE)
no else: do nothing if not true
else: one or the other
[elseif: series of choices]

7. Switching then and else
Operator
Meaning ==
Is equal to !=
Is not equal
>
Is greater than
<
Is less than
>=
Is greater than or equal to
<=
Is less than or equal to