common variable letters for numbers javascript code example
Example: how to name a javascript variable
//variables can include any letter, any number, or the underscore
//NO SPACES!!! USE UNDERSCORES!!!
//variable names are case sensitive
//example:
var change_this = 'whatever you want here'
//change_this is a variable (change it to your variable name)
//'whatever you want here' is a string (you'll learn about this later)