bar.html 2.0 KB

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  1. <!DOCTYPE html>
  2. <html lang="en-US">
  3. <head>
  4. <meta charset="utf-8">
  5. <meta http-equiv="X-UA-Compatible" content="IE=Edge">
  6. <meta name="viewport" content="width=device-width, initial-scale=1">
  7. <title>Scriptable > Bar | Chart.js sample</title>
  8. <link rel="stylesheet" type="text/css" href="../style.css">
  9. <script src="../../dist/Chart.min.js"></script>
  10. <script src="../utils.js"></script>
  11. </head>
  12. <body>
  13. <div class="content">
  14. <div class="wrapper"><canvas id="chart-0"></canvas></div>
  15. <div class="toolbar">
  16. <button onclick="randomize(this)">Randomize</button>
  17. <button onclick="addDataset(this)">Add Dataset</button>
  18. <button onclick="removeDataset(this)">Remove Dataset</button>
  19. </div>
  20. </div>
  21. <script>
  22. var DATA_COUNT = 16;
  23. var utils = Samples.utils;
  24. utils.srand(110);
  25. function colorize(opaque, ctx) {
  26. var v = ctx.dataset.data[ctx.dataIndex];
  27. var c = v < -50 ? '#D60000'
  28. : v < 0 ? '#F46300'
  29. : v < 50 ? '#0358B6'
  30. : '#44DE28';
  31. return opaque ? c : utils.transparentize(c, 1 - Math.abs(v / 150));
  32. }
  33. function generateData() {
  34. return utils.numbers({
  35. count: DATA_COUNT,
  36. min: -100,
  37. max: 100
  38. });
  39. }
  40. var data = {
  41. labels: utils.months({count: DATA_COUNT}),
  42. datasets: [{
  43. data: generateData()
  44. }]
  45. };
  46. var options = {
  47. legend: false,
  48. tooltips: false,
  49. elements: {
  50. rectangle: {
  51. backgroundColor: colorize.bind(null, false),
  52. borderColor: colorize.bind(null, true),
  53. borderWidth: 2
  54. }
  55. }
  56. };
  57. var chart = new Chart('chart-0', {
  58. type: 'bar',
  59. data: data,
  60. options: options
  61. });
  62. // eslint-disable-next-line no-unused-vars
  63. function randomize() {
  64. chart.data.datasets.forEach(function(dataset) {
  65. dataset.data = generateData();
  66. });
  67. chart.update();
  68. }
  69. // eslint-disable-next-line no-unused-vars
  70. function addDataset() {
  71. chart.data.datasets.push({
  72. data: generateData()
  73. });
  74. chart.update();
  75. }
  76. // eslint-disable-next-line no-unused-vars
  77. function removeDataset() {
  78. chart.data.datasets.shift();
  79. chart.update();
  80. }
  81. </script>
  82. </body>
  83. </html>