JQuery :: How To Generate Workable Copy Of Array

I have an array of reference points on a canvas which should remain intact and reusable for repeated 'games'. I need a function to make a duplicate of myArray and call it pool, which I can have jQuery manipulate, such as remove indices from, without ever tampering with myArray.

Do I use:
var myArray = ['string1','string2',...]
$(myArray).map(function) {
return this = pool;
})

Or perhaps:
var myArray = ['string1','string2',...]
(function(makepool){function(.map(myArray) {
return this = pool;
});});

Then call:
var pool = ' '
$makepool()
And refer to the new element as $(pool)