"A variable is a named value in your program. Whenever you use the name in the program, it's replaced with the value."
"You can think of a variable as a box that you can fit one thing in. If you put something else in it, the first thing goes away."
var myVariableis different than
var my dog;
Safe Variable Beginings:
var lunchcostperstudent = 5;
var LunchCostPerStudent = 5;
var lunchCostPerStudent = 5;
var x = 25;
var age = 25;
1. Variables let you store data for your program to use while it's running.
2. Declare a variable by following the var keyword with a name.