How do you parse a JSON formatted array using D3?

How do you parse a JSON formatted array using D3?

I have a D3 chart where I'm trying to parse an inline JSON formatted array
instead of loading the data externally.
Instead of doing something like this:
d3.json("data/tsx.json", function (error, data) {
data.forEach(function (d) {
d.dateOrig = d.date;
d.date = parseDate(d.date);
d.close = +d.close;
});
I just want to parse an inline JSON formatted array like this:
var data = [
{"date":"1-May-13","close":58.13},
{"date":"30-Apr-13","close":53.98},
{"date":"27-Apr-13","close":67.00},
{"date":"26-Apr-13","close":89.70},
{"date":"25-Apr-13","close":99.00},
{"date":"24-Apr-13","close":130.28},
{"date":"23-Apr-13","close":166.70},
{"date":"20-Apr-13","close":234.98},
{"date":"19-Apr-13","close":345.44},
{"date":"18-Apr-13","close":443.34},
];
data.forEach(function(d) {
d.date = parseDate(d.date);
d.close = +d.close;
But this doesn't work using the same code I would have used on the first
method above.
I've created a Fiddle that sort of works, but I can see that I'm parsing
the array wrong and my chart elements are being created multiple times
(the same number of times as the length of the array). This does not
happen when I load my data externally.
See my comments starting at line 35 in this Fiddle.
http://jsfiddle.net/Critter/Hc7zD/5/
How can I rewrite my code to parse the JSON array properly? I'm stumped!
Thanks so much!