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