FusionCharts - Changing size of the chart through API

Created using FusionCharts Suite XT - www.fusioncharts.com

by FusionCharts

HTML

<script src="https://cdn.fusioncharts.com/fusioncharts/latest/fusioncharts.js"></script>
<script src="https://cdn.fusioncharts.com/fusioncharts/latest/themes/fusioncharts.theme.fusion.js"></script>
<!--Changing the chart size dynamically through FusionCharts API (resizeTo method) -->
<div id="chart-container">FusionCharts will render here</div>

<div id='controllers'>
  <label for='width'>Width</label>
  <input id='width' type='text' value='550' />
  <label for='height'>Height</label>
  <input id='height' type='text' value='350' />
  <input id='change' class='resizebtn' type='Button' value='Resize' />
</div>

CSS

input[type=text] {
  max-width: 50px;
  font-family: Verdana, sans;
  font-size: 13px;
  font-style: normal;
  font-weight: normal;
}

#controllers {
  position: inherit;
  left: 10px;
  font-family: Verdana, sans;
  font-size: 13px;
  font-style: normal;
  font-weight: bold;
}

.resizebtn {
  font-family: Verdana, sans;
  font-size: 14px;
  font-style: normal;
}

JavaScript

FusionCharts.ready(function() {
  var iniWidth = 500,
    iniHeight = 300,

    widthInput = document.getElementById('width'),
    heightInput = document.getElementById('height'),
    changeBtn = document.getElementById('change'),

    setDimensionOnClick = function() {
      var w = parseInt(widthInput.value, 10) || iniWidth,
        h = parseInt(heightInput.value, 10) || iniHeight;
      if (w && h) {
        revenueChart.resizeTo(w, h);
      }
    },

    revenueChart = new FusionCharts({
      type: 'column2d',
      renderAt: 'chart-container',
      width: iniWidth,
      height: iniHeight,
      dataFormat: 'json',
      dataSource: {
        "chart": {
          "caption": "Monthly revenue",
          "subCaption": "Last year",
          "xAxisName": "Month",
          "yAxisName": "Amount ($)",
          "numberPrefix": "$",
          "theme": "fusion"
        },

        "data": [{
            "label": "Jan",
            "value": "420000"
          },
          {
            "label": "Feb",
            "value": "810000"
          },
          {
            "label": "Mar",
            "value": "720000"
          },
          {
            "label": "Apr",
            "value": "550000"
          },
          {
            "label": "May",
            "value": "910000"
          },
          {
            "label": "Jun",
            "value": "510000"
          },
          {
            "label": "Jul",
            "value": "680000"
          },
          {
            "label": "Aug",
            "value": "620000"
          },
          {
            "label": "Sep",
            "value": "610000"
          },
          {
            "label": "Oct",
            "value": "490000"
          },
          {
            "label": "Nov",
            "value": "900000"
          },
          {
            "label": "Dec",
            "value": "730000"
          }
        ]
      }
    });

  revenueChart.render();

  if (changeBtn.addEventListener) {
   ...