Arrays and Indexes
We know about names with multiple
instances: Rocky 3, QE 2, John Paul 2
• The number is called the name’s index
• The least index is called the index origin
• In programming, variables that can be
indexed are called arrays
• Declare arrays in JavaScript:
var <identifier> = new Array (<num elements>);
• JavaScript arrays are 0-origin
• Reference array elements w/ brackets: A[0]