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- <!doctype html>
- <html>
-
- <head>
- <title>Line Chart</title>
- <script src="../dist/Chart.bundle.js"></script>
- <script src="http://cdnjs.cloudflare.com/ajax/libs/jquery/2.1.3/jquery.min.js"></script>
- <style>
- canvas {
- -moz-user-select: none;
- -webkit-user-select: none;
- -ms-user-select: none;
- }
- </style>
- </head>
-
- <body>
- <div style="width:75%;">
- <canvas id="canvas"></canvas>
- </div>
- <br>
- <br>
- <button id="randomizeData">Randomize Data</button>
- <button id="addDataset">Add Dataset</button>
- <button id="removeDataset">Remove Dataset</button>
- <button id="addData">Add Data</button>
- <button id="removeData">Remove Data</button>
- <script>
- var MONTHS = ["January", "February", "March", "April", "May", "June", "July", "August", "September", "October", "November", "December"];
- var randomScalingFactor = function() {
- return Math.round(Math.random() * 100 * (Math.random() > 0.5 ? -1 : 1));
- };
- var randomColorFactor = function() {
- return Math.round(Math.random() * 255);
- };
- var randomColor = function(opacity) {
- return 'rgba(' + randomColorFactor() + ',' + randomColorFactor() + ',' + randomColorFactor() + ',' + (opacity || '.3') + ')';
- };
-
- var config = {
- type: 'line',
- data: {
- labels: ["January", "February", "March", "April", "May", "June", "July"],
- datasets: [{
- label: "My First dataset",
- data: [randomScalingFactor(), randomScalingFactor(), randomScalingFactor(), randomScalingFactor(), randomScalingFactor(), randomScalingFactor(), randomScalingFactor()],
- fill: false,
- borderDash: [5, 5],
- }, {
- label: "My Second dataset",
- data: [randomScalingFactor(), randomScalingFactor(), randomScalingFactor(), randomScalingFactor(), randomScalingFactor(), randomScalingFactor(), randomScalingFactor()],
- fill: false,
- borderDash: [5, 5],
- }, {
- label: "My Third dataset - No bezier",
- data: [randomScalingFactor(), randomScalingFactor(), randomScalingFactor(), randomScalingFactor(), randomScalingFactor(), randomScalingFactor(), randomScalingFactor()],
- lineTension: 0,
- fill: false,
- }, {
- label: "My Fourth dataset",
- data: [randomScalingFactor(), randomScalingFactor(), randomScalingFactor(), randomScalingFactor(), randomScalingFactor(), randomScalingFactor(), randomScalingFactor()],
- fill: false,
- }]
- },
- options: {
- responsive: true,
- legend: {
- position: 'bottom',
- },
- hover: {
- mode: 'label'
- },
- scales: {
- xAxes: [{
- display: true,
- scaleLabel: {
- display: true,
- labelString: 'Month'
- }
- }],
- yAxes: [{
- display: true,
- scaleLabel: {
- display: true,
- labelString: 'Value'
- }
- }]
- },
- title: {
- display: true,
- text: 'Chart.js Line Chart - Legend'
- }
- }
- };
-
- $.each(config.data.datasets, function(i, dataset) {
- var background = randomColor(0.5);
- dataset.borderColor = background;
- dataset.backgroundColor = background;
- dataset.pointBorderColor = background;
- dataset.pointBackgroundColor = background;
- dataset.pointBorderWidth = 1;
- });
-
- window.onload = function() {
- var ctx = document.getElementById("canvas").getContext("2d");
- window.myLine = new Chart(ctx, config);
- };
-
- $('#randomizeData').click(function() {
- $.each(config.data.datasets, function(i, dataset) {
- dataset.data = dataset.data.map(function() {
- return randomScalingFactor();
- });
-
- });
-
- window.myLine.update();
- });
-
- $('#addDataset').click(function() {
- var background = randomColor(0.5);
- var newDataset = {
- label: 'Dataset ' + config.data.datasets.length,
- borderColor: background,
- backgroundColor: background,
- pointBorderColor: background,
- pointBackgroundColor: background,
- pointBorderWidth: 1,
- fill: false,
- data: [],
- };
-
- for (var index = 0; index < config.data.labels.length; ++index) {
- newDataset.data.push(randomScalingFactor());
- }
-
- config.data.datasets.push(newDataset);
- window.myLine.update();
- });
-
- $('#addData').click(function() {
- if (config.data.datasets.length > 0) {
- var month = MONTHS[config.data.labels.length % MONTHS.length];
- config.data.labels.push(month);
-
- $.each(config.data.datasets, function(i, dataset) {
- dataset.data.push(randomScalingFactor());
- });
-
- window.myLine.update();
- }
- });
-
- $('#removeDataset').click(function() {
- config.data.datasets.splice(0, 1);
- window.myLine.update();
- });
-
- $('#removeData').click(function() {
- config.data.labels.splice(-1, 1);
-
- config.data.datasets.forEach(function(dataset, datasetIndex) {
- dataset.data.pop();
- });
-
- window.myLine.update();
- });
- </script>
- </body>
-
- </html>
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