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HTML

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<div id="chartContainer" style="height: 360px; width: 100%;"></div>

JavaScript

Module

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var chart = new CanvasJS.Chart("chartContainer", {
  title: {
    text: "Zooming Chart with Mouse Scroll"
  },
  data: [
    {
      type: "column",
      dataPoints: [
        { x: 10, y: 71 },
        { x: 20, y: 55 },
        { x: 30, y: 50 },
        { x: 40, y: 65 },
        { x: 50, y: 95 },
        { x: 60, y: 68 },
        { x: 70, y: 28 },
        { x: 80, y: 34 },
        { x: 90, y: 14 },
      ]
    }         
  ]
});
​
chart.render();
​
document.getElementsByClassName("canvasjs-chart-canvas")[1].addEventListener("wheel", function(e){
  e.preventDefault();
​
  if(e.clientX < chart.plotArea.x1 || e.clientX > chart.plotArea.x2 || e.clientY < chart.plotArea.y1 || e.clientY > chart.plotArea.y2)
    return;
​
  var xValue = Math.round(chart.axisX[0].convertPixelToValue(e.clientX));
  var yValue = Math.round(chart.axisY[0].convertPixelToValue(e.clientY));
​
  var axisXViewportMin = chart.axisX[0].get("viewportMinimum"),
      axisXViewportMax = chart.axisX[0].get("viewportMaximum"),
​
      axisYViewportMin = chart.axisY[0].get("viewportMinimum"),
      axisYViewportMax = chart.axisY[0].get("viewportMaximum"),
      
      axisXMin = chart.axisX[0].get("minimum"),
      axisXMax = chart.axisX[0].get("maximum"),
      
      axisYMin = chart.axisY[0].get("minimum"),
      axisYMax = chart.axisY[0].get("maximum"),
​
      axisXInterval = chart.axisX[0].interval,
      axisYInterval = chart.axisY[0].interval;
​
  var newAxisXViewportMin, newAxisXViewportMax,newAxisYViewportMin, newAxisYViewportMax;
​
  if (e.deltaY < 0) {
    newAxisXViewportMin = axisXViewportMin + (xValue - axisXViewportMin) / axisXInterval;
    newAxisXViewportMax = axisXViewportMax - (axisXViewportMax - xValue) / axisXInterval;
​
    newAxisYViewportMin = axisYViewportMin + (yValue - axisYViewportMin) / axisYInterval;
    newAxisYViewportMax = axisYViewportMax - (axisYViewportMax - yValue) / axisYInterval;
  }
​
  else if (e.deltaY > 0) {
    newAxisXViewportMin = (axisXViewportMin - (xValue - axisXViewportMin) / axisXInterval) >= axisXMin ? (axisXViewportMin - (xValue - axisXViewportMin) / axisXInterval) : axisXMin;
    newAxisXViewportMax = (axisXViewportMax + (axisXViewportMax - xValue) / axisXInterval) <= axisXMax ? (axisXViewportMax + (axisXViewportMax - xValue) / axisXInterval) : axisXMax;
​
    newAxisYViewportMin = (axisYViewportMin - (yValue - axisYViewportMin) / axisYInterval) >= axisYMin ? (axisYViewportMin - (yValue - axisYViewportMin) / axisYInterval) : axisYMin;
    newAxisYViewportMax = (axisYViewportMax + (axisYViewportMax - yValue) / axisYInterval) <= axisYMax ? (axisYViewportMax + (axisYViewportMax - yValue) / axisYInterval) : axisYMax;
​
  }
​
  if(newAxisXViewportMin >= axisXMin && newAxisXViewportMax <= axisXMax && (newAxisXViewportMax - newAxisXViewportMin) > (2 * axisXInterval) && newAxisYViewportMin >= axisYMin && newAxisYViewportMax <= axisYMax && (newAxisYViewportMax - newAxisYViewportMin) > (2 * axisYInterval)){
    chart.axisX[0].set("viewportMinimum", newAxisXViewportMin, false);
    chart.axisX[0].set("viewportMaximum", newAxisXViewportMax, false);
​
    chart.axisY[0].set("viewportMinimum", newAxisYViewportMin, false);
    chart.axisY[0].set("viewportMaximum", newAxisYViewportMax);
  }
​
});

CSS

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​

1342px

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