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93 lines
1.9 KiB
Markdown
93 lines
1.9 KiB
Markdown
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# Position
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This sample shows how to use the tooltip position mode setting.
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```js chart-editor
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// <block:actions:3>
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const actions = [
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{
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name: 'Position: average',
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handler(chart) {
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chart.options.plugins.tooltip.position = 'average';
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chart.update();
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}
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},
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{
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name: 'Position: nearest',
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handler(chart) {
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chart.options.plugins.tooltip.position = 'nearest';
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chart.update();
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}
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},
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{
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name: 'Position: bottom (custom)',
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handler(chart) {
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chart.options.plugins.tooltip.position = 'bottom';
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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:2>
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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 data = {
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labels: Utils.months({count: DATA_COUNT}),
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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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fill: false,
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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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fill: false,
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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:positioner:1>
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// Create a custom tooltip positioner to put at the bottom of the chart area
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components.Tooltip.positioners.bottom = function(items) {
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const pos = components.Tooltip.positioners.average(items);
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const chart = this._chart;
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return {
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x: pos.x,
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y: chart.chartArea.bottom,
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};
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};
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// </block:positioner>
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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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interaction: {
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intersect: false,
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mode: 'index',
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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: (ctx) => 'Tooltip position mode: ' + ctx.chart.options.plugins.tooltip.position,
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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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};
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```
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