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6f7e09540c
Changed var to const/let in the docs
145 lines
3.4 KiB
Markdown
145 lines
3.4 KiB
Markdown
# Animation Progress Bar
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## Initial animation
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<progress id="initialProgress" max="1" value="0" style="width: 100%"></progress>
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## Other animations
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<progress id="animationProgress" max="1" value="0" style="width: 100%"></progress>
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```js chart-editor
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// <block:actions:2>
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const actions = [
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{
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name: 'Randomize',
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handler(chart) {
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chart.data.datasets.forEach(dataset => {
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dataset.data = Utils.numbers({count: chart.data.labels.length, min: -100, max: 100});
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});
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chart.update();
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}
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},
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{
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name: 'Add Dataset',
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handler(chart) {
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const data = chart.data;
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const dsColor = Utils.namedColor(chart.data.datasets.length);
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const newDataset = {
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label: 'Dataset ' + (data.datasets.length + 1),
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backgroundColor: Utils.transparentize(dsColor, 0.5),
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borderColor: dsColor,
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data: Utils.numbers({count: data.labels.length, min: -100, max: 100}),
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};
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chart.data.datasets.push(newDataset);
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chart.update();
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}
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},
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{
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name: 'Add Data',
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handler(chart) {
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const data = chart.data;
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if (data.datasets.length > 0) {
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data.labels = Utils.months({count: data.labels.length + 1});
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for (let index = 0; index < data.datasets.length; ++index) {
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data.datasets[index].data.push(Utils.rand(-100, 100));
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}
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chart.update();
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}
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}
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},
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{
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name: 'Remove Dataset',
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handler(chart) {
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chart.data.datasets.pop();
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chart.update();
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}
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},
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{
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name: 'Remove Data',
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handler(chart) {
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chart.data.labels.splice(-1, 1); // remove the label first
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chart.data.datasets.forEach(dataset => {
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dataset.data.pop();
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});
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chart.update();
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}
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}
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];
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// </block:actions>
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// <block:setup:1>
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const initProgress = document.getElementById('initialProgress');
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const progress = document.getElementById('animationProgress');
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const DATA_COUNT = 7;
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const NUMBER_CFG = {count: DATA_COUNT, min: -100, max: 100};
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const labels = Utils.months({count: 7});
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const data = {
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labels: labels,
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datasets: [
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{
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label: 'Dataset 1',
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data: Utils.numbers(NUMBER_CFG),
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borderColor: Utils.CHART_COLORS.red,
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backgroundColor: Utils.transparentize(Utils.CHART_COLORS.red, 0.5),
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},
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{
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label: 'Dataset 2',
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data: Utils.numbers(NUMBER_CFG),
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borderColor: Utils.CHART_COLORS.blue,
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backgroundColor: Utils.transparentize(Utils.CHART_COLORS.blue, 0.5),
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}
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]
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};
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// </block:setup>
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// <block:config:0>
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const config = {
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type: 'line',
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data: data,
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options: {
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animation: {
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duration: 2000,
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onProgress: function(context) {
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if (context.initial) {
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initProgress.value = context.currentStep / context.numSteps;
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} else {
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progress.value = context.currentStep / context.numSteps;
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}
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},
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onComplete: function(context) {
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if (context.initial) {
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console.log('Initial animation finished');
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} else {
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console.log('animation finished');
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}
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}
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},
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interaction: {
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mode: 'nearest',
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axis: 'x',
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intersect: false
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},
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plugins: {
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title: {
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display: true,
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text: 'Chart.js Line Chart - Animation Progress Bar'
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}
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},
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},
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};
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// </block:config>
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module.exports = {
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actions: actions,
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config: config,
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output: 'console.log output is displayed here'
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};
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```
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