--- /dev/null
+<!doctype html>
+<html>
+
+<head>
+ <title>Bar Chart</title>
+ <script src="../node_modules/jquery/dist/jquery.min.js"></script>
+ <script src="../Chart.js"></script>
+</head>
+
+<body>
+ <div style="width: 50%">
+ <canvas id="canvas" height="450" width="600"></canvas>
+ </div>
+ <button id="randomizeData">Randomize Data</button>
+ <script>
+ var randomScalingFactor = function() {
+ return (Math.random() > 0.5 ? 1.0 : -1.0) * Math.round(Math.random() * 100);
+ };
+ var randomColorFactor = function() {
+ return Math.round(Math.random() * 255);
+ };
+
+ var barChartData = {
+ labels: ["January", "February", "March", "April", "May", "June", "July"],
+ datasets: [{
+ label: 'Dataset 1',
+ backgroundColor: "rgba(220,220,220,0.5)",
+ data: [randomScalingFactor(), randomScalingFactor(), randomScalingFactor(), randomScalingFactor(), randomScalingFactor(), randomScalingFactor(), randomScalingFactor()]
+ }, {
+ label: 'Dataset 2',
+ backgroundColor: "rgba(151,187,205,0.5)",
+ data: [randomScalingFactor(), randomScalingFactor(), randomScalingFactor(), randomScalingFactor(), randomScalingFactor(), randomScalingFactor(), randomScalingFactor()]
+ }, {
+ label: 'Dataset 3',
+ backgroundColor: "rgba(151,187,205,0.5)",
+ data: [randomScalingFactor(), randomScalingFactor(), randomScalingFactor(), randomScalingFactor(), randomScalingFactor(), randomScalingFactor(), randomScalingFactor()]
+ }]
+
+ };
+ window.onload = function() {
+ var ctx = document.getElementById("canvas").getContext("2d");
+ window.myBar = new Chart(ctx).Bar({
+ data: barChartData,
+ options: {
+ responsive: true,
+ stacked: true,
+ }
+ });
+ };
+
+ $('#randomizeData').click(function() {
+ $.each(barChartData.datasets, function(i, dataset) {
+ dataset.backgroundColor = 'rgba(' + randomColorFactor() + ',' + randomColorFactor() + ',' + randomColorFactor() + ',.7)';
+ dataset.data = [randomScalingFactor(), randomScalingFactor(), randomScalingFactor(), randomScalingFactor(), randomScalingFactor(), randomScalingFactor(), randomScalingFactor()];
+
+ });
+ window.myBar.update();
+ });
+ </script>
+</body>
+
+</html>
projects / thirdparty / Chart.js.git / commitdiff
