Step 3 - Formatting Currency

index.js

  g = new Dygraph(

    // containing div
    document.getElementById("graphdiv"),

    // CSV or path to a CSV file.
    "Fort Lauderdale Data Snapshot-Reoriented.csv",
    {
    	title: 'Fort Lauderdale Budget Data',
        width: 800,
        height: 480,
        axes: {
            y: {
                axisLabelFormatter: function(x) {
                    return numeral(x).format('($ 0.00 a)');
                },
                valueFormatter: function(x) {
                    return numeral(x).format('($ 0.00 a)');
                },
            }
        },
    }
    );