web tech

<!doctype html>
<html>
    <head>
        <script src="js/Chart.js"></script>
        <script language="javascript">
            var readText;
            var myGraph;

            function readTextFile(fileName){
                var inFile = new XMLHttpRequest();
                inFile.open("GET", fileName, false);
                inFile.send();
                readText = inFile.responseText;
                return readText;
            }

            var date = [];
            var volume = [];
            var adjClose = [];
            var collArray = [];
            function dividedText(nameFile){
                var readText2 = readTextFile(nameFile);
                var dividedText = readText2.split("\n");

                for (i=1; i<dividedText.length-1; i++){         // ***
                    var newData = dividedText[i].split(',');
                    date.push(newData[0]);
                    volume.push(newData[1]);
                    adjClose.push(newData[2]);
                }
                collArray.push(date[0]);
                collArray.push(volume[0]);
                collArray.push(adjClose[0]);
            }

            var ChartData = {
                labels : collArray[0],
                datasets : [
                    {
                        fillColor : "rgba(255,91,91,0.5)",
                        strokeColor : "rgba(255,91,91,0.5)",
                        data : []
                    },
                    {
                        fillColor : "rgba(220,220,220,0.5)",
                        strokeColor : "rgba(30,144,255,1)",
                        data : []
                    },
                ]
            }

            function drawBarChart(){
                ChartData.datasets[0].data = adjClose; // *** TRANSFER DATA
                ChartData.labels = date;
                myGraph = new Chart(document.getElementById("canvas").getContext("2d")).Bar(ChartData);

            }
            dividedText("aol.csv");
            dividedText("facebook.csv");
        </script>

    </head>

    <body>
        <h1> Search Engine Stock Comparisons </h1>
		<div>
			<canvas id="canvas" height="600" width="1000"></canvas>
		</div>
		<div>
			<button type="button" onClick="drawBarChart()">Draw Graph</button>
		</div>
    </body>
</html>