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Configuring your Chart using Plain JS

FusionCharts Suite XT includes advanced features that let you add more context to your chart and make data visualization simpler. These features include chart updates, annotations, trend-lines, and events.

This article focuses on how you can:

Update Chart Data

A chart, configured to update data values dynamically, is shown below (click Update Chart Data to start):

FusionCharts will load here..
{
    "chart": {
        "caption": "Countries With Most Oil Reserves [2017-18]",
        "subCaption": "In MMbbl = One Million barrels",
        "xAxisName": "Country",
        "yAxisName": "Reserves (MMbbl)",
        "numberSuffix": "K",
        "theme": "fusion"
    },
    "data": [
        {
            "label": "Venezuela",
            "value": "290"
        },
        {
            "label": "Saudi",
            "value": "260"
        },
        {
            "label": "Canada",
            "value": "180"
        },
        {
            "label": "Iran",
            "value": "140"
        },
        {
            "label": "Russia",
            "value": "115"
        },
        {
            "label": "UAE",
            "value": "100"
        },
        {
            "label": "US",
            "value": "30"
        },
        {
            "label": "China",
            "value": "30"
        }
    ]
}

The full code of the above sample is given below:

import FusionCharts from "fusioncharts";
import Charts from "fusioncharts/fusioncharts.charts";
import FusionTheme from "fusioncharts/themes/fusioncharts.theme.fusion";

// Add the chart and theme as dependency
FusionCharts.addDep(Charts);
FusionCharts.addDep(FusionTheme);

// Create an Instance with chart options
var chartInstance = new FusionCharts({
  type: "column2d",
  renderAt: "chart-container",
  width: "700",
  height: "400",
  dataFormat: "json",
  dataSource: {
    // Chart Configuration
    chart: {
      caption: "Countries With Most Oil Reserves [2017-18]",
      subCaption: "In MMbbl = One Million barrels",
      xAxisName: "Country",
      yAxisName: "Reserves (MMbbl)",
      numberSuffix: "K",
      theme: "fusion"
    },
    // Chart Data
    data: [
      {
        label: "Venezuela",
        value: "290"
      },
      {
        label: "Saudi",
        value: "260"
      },
      {
        label: "Canada",
        value: "180"
      },
      {
        label: "Iran",
        value: "140"
      },
      {
        label: "Russia",
        value: "115"
      },
      {
        label: "UAE",
        value: "100"
      },
      {
        label: "US",
        value: "30"
      },
      {
        label: "China",
        value: "30"
      }
    ]
  },
  events: {
    beforeRender: function(evt, args) {
      var controls = document.createElement("div"),
        chartRef = evt.sender;

      chartRef.getRandomNumber = function() {
        var max = 300,
          min = 50;
        return Math.round((max - min) * Math.random() + min);
      };
      updateData = function() {
        //clones data
        var data = Object.assign({}, chartRef.getJSONData());
        data.data[2].label = "Canada";
        data.data[2].value = chartRef.getRandomNumber();

        data.data[3].label = "Iran";
        data.data[3].value = chartRef.getRandomNumber();
        chartRef.setJSONData(data);
      };
      controls.innerHTML =
        '<button style="background-color: #6957da; border: none; border-radius: 3px; color: white; padding: 4px 12px; text-align: center; cursor: pointer; outline: none; text-decoration: none; display: inline-block; font-size: 14px;" onClick="updateData()" >Update chart data</button>';
      controls.style.cssText = "text-align: center; width: 100%;";
      args.container.appendChild(controls);
    }
  }
}); // Render
chartInstance.render();

The above chart has been rendered using the following steps:

  1. Include the necessary libraries and components using import. For example, fusioncharts library, etc.

  2. Add the chart and theme as dependency.

  3. Create an instance of the chart with chart options. In the JSON object:

    • Set the chart type as column2d. Find the complete list of chart types with their respective alias here.
    • Set the width and height of the chart in pixels.
    • Set the dataFormat as JSON.
    • Embed the json data as the value of dataSource.

  4. Generate random data to update the chart using Math.random().

  5. Add an event handler to update chart button.

  6. Add the updateData() function to randomly update the value of the chart when the button is clicked.

  7. Add the innerHTML to create the button inside the <div>.

Update Chart Attributes

A chart, configured to update the chart caption, sub-caption alignment and chart background dynamically, is shown below (click any one of the buttons shown below the chart to change the chart background and caption, sub-caption alignment):

FusionCharts will load here..
{
    "chart": {
        "caption": "Countries With Most Oil Reserves [2017-18]",
        "subCaption": "In MMbbl = One Million barrels",
        "xAxisName": "Country",
        "yAxisName": "Reserves (MMbbl)",
        "numberSuffix": "K",
        "theme": "fusion"
    },
    "data": [
        {
            "label": "Venezuela",
            "value": "290"
        },
        {
            "label": "Saudi",
            "value": "260"
        },
        {
            "label": "Canada",
            "value": "180"
        },
        {
            "label": "Iran",
            "value": "140"
        },
        {
            "label": "Russia",
            "value": "115"
        },
        {
            "label": "UAE",
            "value": "100"
        },
        {
            "label": "US",
            "value": "30"
        },
        {
            "label": "China",
            "value": "30"
        }
    ]
}

The full code of the above sample is given below:

import FusionCharts from 'fusioncharts';
import Charts from 'fusioncharts/fusioncharts.charts';
import FusionTheme from 'fusioncharts/themes/fusioncharts.theme.fusion';

// Add the chart and theme as dependency
FusionCharts.addDep(Charts);
FusionCharts.addDep(FusionTheme);

// Create an Instance with chart options
var chartInstance = new FusionCharts({
    type: 'column2d',
    renderAt: 'chart-container',
    width: '700',
    height: '400',
    dataFormat: 'json',
    dataSource: {
        // Chart Configuration
        "chart": {
            "caption": "Countries With Most Oil Reserves [2017-18]",
            "subCaption": "In MMbbl = One Million barrels",
            "xAxisName": "Country",
            "yAxisName": "Reserves (MMbbl)",
            "numberSuffix": "K",
            "theme": "fusion",
        },
        // Chart Data
        "data": [{
            "label": "Venezuela",
            "value": "290"
        }, {
            "label": "Saudi",
            "value": "260"
        }, {
            "label": "Canada",
            "value": "180"
        }, {
            "label": "Iran",
            "value": "140"
        }, {
            "label": "Russia",
            "value": "115"
        }, {
            "label": "UAE",
            "value": "100"
        }, {
            "label": "US",
            "value": "30"
        }, {
            "label": "China",
            "value": "30"
        }]
    },
    events: {
        "beforeRender": function(evt, args) {
            var chartRef = evt.sender;

            chartRef.originalData = JSON.parse(JSON.stringify(chartRef.getJSONData()));

            chartRef.changeBackground = function() {
                var data = chartRef.getJSONData(); //copy of object
                data.chart.bgColor = '#efefef';
                chartRef.setJSONData(data);
            };

            // Resets all the chart data to it's initial verison
            chartRef.resetAttr = function() {
                chartRef.setJSONData(chartRef.originalData);
            };

            // Makes the caption text left aligned
            chartRef.makeCaptionLeft = function() {
                var data = chartRef.getJSONData();
                data.chart.captionAlignment = 'left';
                chartRef.setJSONData(data);
            };


            var btnContainer = document.createElement('div'),
                str;

            // buttons
            str = '<button id="bgColorBtn" style="background-color: #6957da; border: none; border-radius: 3px; color: white; padding: 4px 12px; text-align: center; cursor: pointer; outline: none; text-decoration: none; display: inline-block; font-size: 14px;">Change Chart Background</button>&nbsp&nbsp';
            str += '<button id="captionAlignBtn" style="background-color: #6957da; border: none; border-radius: 3px; color: white; padding: 4px 12px; text-align: center; cursor: pointer; outline: none; text-decoration: none; display: inline-block; font-size: 14px;">Make Caption Text Left-Aligned</button>&nbsp&nbsp';
            str += '<button id="resetAttrBtn" style="background-color: #6957da; border: none; border-radius: 3px; color: white; padding: 4px 12px; text-align: center; cursor: pointer; outline: none; text-decoration: none; display: inline-block; font-size: 14px;">Reset Attributes</button>';

            btnContainer.style.cssText = "text-align: center; width: 100%; margin: 10px;";
            btnContainer.innerHTML = str;
            //button attachment
            args.container.parentNode.insertBefore(btnContainer, args.container.nextSibling);
        },

        "renderComplete": function(evt, args) {
            var chartRef = evt.sender,
                bgColorBtn = document.getElementById('bgColorBtn'),
                captionAlignBtn = document.getElementById('captionAlignBtn'),
                resetAttrBtn = document.getElementById('resetAttrBtn');

            bgColorBtn.onclick = chartRef.changeBackground;
            captionAlignBtn.onclick = chartRef.makeCaptionLeft;
            resetAttrBtn.onclick = chartRef.resetAttr;
        }
    }
});// Render
chartInstance.render();

  1. Include the necessary libraries and components using import. For example, fusioncharts library, etc.

  2. Add the chart and theme as dependency.

  3. Create an instance of the chart with chart options. In the JSON object:

    • Set the chart type as column2d. Find the complete list of chart types with their respective alias here.
    • Set the width and height of the chart in pixels.
    • Set the dataFormat as JSON.
    • Embed the json data as the value of dataSource.

  4. beforeRender function is used to set the chart attributes.

    • changeBackground updated the background of the chart.
    • makeCaptionLeft sets the caption text to left aligned.
    • resetAttr resets the chart data to it's initial state.

  5. btnContainer created the button inside the <div>. Set style to button using innerHTML.

  6. Call the renderComplete function to return the rendered chart.