These are identical declarations for an array:
var foo = new Array()
var bar = []
...as are these, which also initialize the array:
var foo = new Array('first', 'second', 'third')
var bar = ['first', 'second', 'third']
Both of the above are accessed like so:
alert(foo[0]) // alerts 'first'
alert(bar[0]) // alerts 'first'
An associative array (which is really an object in JS) is declared/initialized like so:
var bash = {
first : 'value 1',
second: 'value 2',
third : 'value 3'
}
