小编Lin*_*son的帖子

我的条形图中有一个添加数据功能，但我希望能够使用 onclick 删除此数据。我该怎么做呢？

var canvas = document.getElementById("barChart");
var ctx = canvas.getContext('2d');
// We are only changing the chart type, so let's make that a global variable along with the chart object:
var chartType = 'bar';
var myBarChart;

// Global Options:
Chart.defaults.global.defaultFontColor = 'grey';
Chart.defaults.global.defaultFontSize = 16;

var data = {
  labels: [ "2012", "2013", "2014", "2015", "2016", "2017"],
  datasets: [{
    label: "Miljoner ton",
    fill: true,
    lineTension: 0.1,
    backgroundColor: "rgba(0,255,0,0.4)",
    borderColor: "green", // The main line color
    borderCapStyle: 'square',
    pointBorderColor: "white", …