How to pass values into an array - a snippet for some friends

arrays.js

var array = []

array[1] = "a value"
array[2] = "a new value"
console.log(array) // returns ["a value","a new value"]

// p.s. console.log() and alert() are interchangeable. If you use console.log the
// message appears in your browser's console rather than in a popup.

// That's kinda obvious but here's something your probably haven't used yet:

/* Array.push()
   is a JavaScript method that allows you to tack a value on the end of an array. */


array.push(1)
array.push(2)
array.push(3)
console.log(array) // returns [1,2,3]

// you can also pass multiple values

array.push(4,5,6)
console.log(array) // returns [1,2,3,4,5,6]

// This makes it easy to populate an array without having to do some complicated
// looping or something like that.

// There are a lot of other helpful Array Methods as well:

/* Array.pop()
   removes the last value of the array and returns it. */

var giveItBack = array.pop()
console.log(array) // returns [1,2,3,4,5]
console.log(giveItBack) // returns 6

/* Array.length()
   returns the number of items in an array */

array = [1,2,3,4,5]
console.log(newArray.length()) // returns 5

/* Array.join()
   concatenates all items in an array with the separator provided */

array = [1,2,3,4,5,6]
array.join()    // returns "123456"
array.join(",") // returns "1,2,3,4,5,6"
array.join(" and ") // returns "1 and 2 and 3 and 4 and 5 and 6"