使用Charts.js从分组的JSON对象绘制多线图

Question

我对一个JSON对象进行了分组，现在我试图从每个潜在客户源绘制多线图以在一个主图上进行比较。 预先感谢您提供任何有用的建议。

分组https://codepen.io/edwardgnt/post/json-object后链接到JSON对象

var ctx = document.getElementById('leads_source_canvas').getContext('2d');
var dataset = {
  type: 'line',
  data: {
    labels: [],
    datasets: [{
      label: 'SOCIAL MEDIA OUTBOUND',
      backgroundColor: 'rgba(0, 149, 255, 0.70)',
      borderColor: 'rgba(0, 149, 255, 0.75)',
      hoverBackgroundColor: 'rgba(0, 149, 255, 1)',
      hoverBorderColor: 'rgba(0, 149, 255, 1)',
      data: []
    }]
  },
  options: {
    scales: {
      yAxes: [{
        ticks: {
          beginAtZero: true
        }
      }]
    }
  }
}


var getData = function(chartdata) {
  $.ajax({
    url: 'http://admin/chart/leads_source_chart',
    success: function(data) {
      console.log(data);

      data.forEach((el, i) => {
        chartdata.data.labels.push(el.CreatedDate);
        chartdata.data.datasets[0].data.push(el.NumLeads);
      });
      var myChart = new Chart(ctx, chartdata);

    }
  });
};
getData(dataset);

我目前拥有的代码来自未分组的json对象。

Answer 1

这是解决方案。

 var ctx = document.getElementById('myChart').getContext('2d'); var dataset = { type: 'line', data: { labels: [], datasets: [] }, options: { scales: { yAxes: [{ ticks: { beginAtZero: true } }] } } } function getRandomRgb() { var num = Math.round(0xffffff * Math.random()); var r = num >> 16; var g = num >> 8 & 255; var b = num & 255; return 'rgb(' + r + ', ' + g + ', ' + b + ')'; } var getData = function(chartdata) { $.ajax({ url: 'https://api.myjson.com/bins/qw7np', //url:'https://api.myjson.com/bins/fadwx', success: function(data) { console.log(data); var dates = []; Object.keys(data).forEach((k, i) => { var obj = {}; obj['label'] = k; obj['fill'] = false; obj['data'] = []; obj['borderColor'] = getRandomRgb(); chartdata.data.datasets.push(obj); data[k].forEach(el => { dates.push(el.CreatedDate); }); }); dates = [...new Set(dates)].sort(); chartdata.data.labels = dates; Object.keys(data).forEach((k, i) => { dates.forEach(d => { var mark = true; data[k].forEach(el => { if (el.CreatedDate === d) { mark = false; chartdata.data.datasets[i].data.push(el .NumLeads); } }); if (mark) chartdata.data.datasets[i].data.push(0); }); }); console.log(chartdata); var myChart = new Chart(ctx, chartdata); } }); }; getData(dataset); 

 <script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script> <script src="https://cdnjs.cloudflare.com/ajax/libs/Chart.js/2.8.0/Chart.bundle.js"></script> <canvas id="myChart" width="200" height="200"></canvas>