Chart.js v2.0:仅针对一个数据集的工具提示(Chart.js v2.0: Tooltip only for one dataset)
我有这3个数据集的图表:
this.myChart = new Chart(this.ctx, { type: 'bar', data: { labels: labels, datasets: [ { type: 'line', data: data3 }, { type: 'bar', data: data1, backgroundColor: "#3EAFD5" }, { type: 'bar', data: data2, backgroundColor: "#D24B47" } ] } }如何仅为第一个数据集显示工具提示(类型:'line')?
I have graph whit this 3 datasets:
this.myChart = new Chart(this.ctx, { type: 'bar', data: { labels: labels, datasets: [ { type: 'line', data: data3 }, { type: 'bar', data: data1, backgroundColor: "#3EAFD5" }, { type: 'bar', data: data2, backgroundColor: "#D24B47" } ] } }How can I do to show tooltip only for first dataset (type: 'line')?
最满意答案
您可以覆盖图表对象的getElementAtEvent方法
var originalGetElementAtEvent = myChart.getElementAtEvent; myChart.getElementAtEvent = function () { return originalGetElementAtEvent.apply(this, arguments).filter(function (e) { return e._datasetIndex == 0; }); }其中myChart是您的图表对象。
小提琴 - http://jsfiddle.net/x4shhvbk/
You can just override the getElementAtEvent method of the chart object
var originalGetElementAtEvent = myChart.getElementAtEvent; myChart.getElementAtEvent = function () { return originalGetElementAtEvent.apply(this, arguments).filter(function (e) { return e._datasetIndex == 0; }); }where myChart is your chart object.
Fiddle - http://jsfiddle.net/x4shhvbk/
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