how to declare an array in javascript
var array = [item1, item2, .....]; /* item1 and item2 could be a string (which is a letter written in double or single quotes like this "string" or 'string') or a number (which is just a normal number on the keypad) or a boolean (which is an experssion which either returns to true of false) and the ..... means that the inputs can be infinite. */