表单提交后呈现图表？

Question

我在点击按钮后尝试渲染图形，但点击后图形会在一秒钟内快速消失。

这是我用来渲染图表的函数（我正在使用CanvasJS）：

function makeChart() {

  var p = Number(dieForm.elements["headsProb"].value);
  var numTrials = Number(dieForm.elements["numTrials"].value);
  var dieResults = coinToss(p, numTrials);

  var heads = dieResults[0];
  var tails = dieResults[1];

  var chart = new CanvasJS.Chart("colChartContainer", {
      theme: "theme2",
      title:{
          text: "Coin Toss Results"              
     },
      data: [              
      {
        type: "column",
        dataPoints: [
          { label: "Heads", y: heads},
          { label: "Tails", y: tails}
        ]
    }
  ]
});

chart.render();
}