Chart.js饼图未显示

var upDataC = [];
for (var i = 1; i < upData.length; i++) {
  upDataC[i - 1] = upData[i];
  var datasetsx = [];
  var datas;

  for (var j = 0; j < lData.length; j++) {
    datas = 0;
    var x = Math.floor((Math.random() * 220) + 1);
    var y = Math.floor((Math.random() * 220) + 1);
    var z = Math.floor((Math.random() * 220) + 1);
    var temp = allData[j];
    for (var w = 0; w < temp.length; w++) {
      var temp2 = temp[w];
      datas = parseInt(parseInt(datas) + parseInt(temp2));
    }

    datasetsx[j] = {
      label: lData[j],
      color: 'rgba(' + z + ',' + y + ',' + x + ',1)',
      highlight: 'rgba(' + z + ',' + y + ',' + x + ',1)',
      value: datas,
    }
  }

  var data = {
    labels: upDataC,
    datasets: datasetsx,
  };
  var ctx = $("#myChart").get(0).getContext("2d");
  var newGraph = new Chart(ctx).Pie(data);


}


Chart.defaults.global = {
  animation: true,
  animationSteps: 60,

}
Chart.defaults.global.responsive = true;
var options = "";
var selected = false;
if (selected === false) {} else {
  legend(document.getElementById("data"), data);
}
};var upDataC = [];
for (var i = 1; i