JSON to CSV converter.

json_to_csv.js

function JsonToCsv(json) {

    var csv = '';

	// Begin with the header row, using
	// the keys as headings.
	for (var key in json[0]) {

		csv += key + ',';
	}

	// Cut off the trailing comma.
	csv = csv.substring(0, csv.length-1);

    // Line break.
	csv += '\r\n';

	// Iterate through the rows.
	for (var i=0; i<json.length; i++) {

		var line = '';
		for (var key in json[i]) {

			if (line != '') {
				line += ',';
			}

		    line += json[i][key];
		}

		csv += line + '\r\n';
	}

	return csv;
}

/*
Test conversion:

[
    {
		"Header 1": "Data 1",
		"Header 2": "Data 2",
		"Header 3": "Data 3"
	},
	{
		"Header 1": "Data 4",
		"Header 2": "Data 5",
		"Header 3": "Data 6"
	},
	{
		"Header 1": "Data 7",
		"Header 2": "Data 8",
		"Header 3": "Data 9"
	}
]

becomes:

Header 1,Header 2,Header 3
Data 1,Data 2,Data 3
Data 4,Data 5,Data 6
Data 7,Data 8,Data 9
*/