JavaScript statements are composed of the following:
•Values
•Operators
•Expressions
•Keywords
•Comments.
Semicolons separate JavaScript statements.
Add a semicolon at the end of each executable statement:
var a, b, c; // Declare 3 variables
a = 5; // Assign the value 5 to a
b = 6; // Assign the value 6 to b
c = a + b; // Assign the sum of a and b to c