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Bubble in JavaScript (ES5) Maps control

09 Sep 2021 / 3 minutes to read

Bubbles in the Maps control represent the underlying data values of the Maps. It can be scattered throughout the Maps shapes that contain values in the data source. Bubbles are enabled by setting the visible property of bubbleSettings property to true.

To add bubbles to the Maps, bind the data source to the dataSource property of bubbleSettings property and set the field name, that contains the numerical data, in the data source to the valuePath property. The following example demonstrates how to enable bubbles for the World map with the data source.

Source
Preview
index.js
index.html
Copied to clipboard
var map = new ej.maps.Maps({
    layers: [{
        shapeData: world_map,
        shapeDataPath: 'name',
        shapePropertyPath: 'name',
        bubbleSettings: [{
            visible: true,
            minRadius: 20,
            dataSource: [
                { name: 'India', population: '38332521' },
                { name: 'Burundi', population: '10524117' },
                { name: 'Pakistan', population: '3090416' }
            ],
            maxRadius: 40,
            valuePath: 'population'
        }]
    }]
});
map.appendTo('#element');
Copied to clipboard
<!DOCTYPE html><html lang="en"><head>
    <title>EJ2 Maps</title>
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta name="description" content="Typescript UI Controls">
    <meta name="author" content="Syncfusion">
    <link href="index.css" rel="stylesheet">
    
    <script src="world-map.js"></script>
    <script src="usa.js"></script>
    <script src="data.js"></script>
    <script src="california.js"></script>
    <script src="texas.js"></script>
    <script src="africa_continent.js"></script>
    <script src="africa.js"></script>
    <script src="cluster.js"></script>
    
<script src="https://cdn.syncfusion.com/ej2/dist/ej2.min.js" type="text/javascript"></script>
</head>

<body>
    
    <div id="container" style="height: 500px; width: 700px">
        <div id="element"></div>
    </div>
    <svg height="150" width="400">
        <defs>
            <linearGradient id="grad1" x1="0%" y1="0%" x2="0%" y2="100%">
                <stop offset="0%" style="stop-color:#C5494B;stop-opacity:1"></stop>
                <stop offset="100%" style="stop-color:#4C134F;stop-opacity:1"></stop>
            </linearGradient>
        </defs>
    </svg>
    <!-- annotation content -->
    <div id="maps-annotation" style="display: none;">
        <div id="annotation">
            <div>
                <p style="margin-left:10px;font-size:13px;font-weight:500">Facts about Africa</p>
            </div>
            <hr style="margin-top:-3px;margin-bottom:10px;border:0.5px solid #DDDDDD">
            <div>
                <ul style="list-style-type:disc; margin-left:-20px;margin-bottom:2px; font-weight:400">
                    <li>Africa is the second largest and second most populated continent in the world.</li>
                    <li style="padding-top:5px;">Africa has 54 sovereign states and 10 non-sovereign territories.</li>
                    <li style="padding-top:5px;">Algeria is the largest country in Africa, where as Mayotte is the smallest.</li>
                </ul>
            </div>
        </div>
    </div>
    <div id="compass-maps" style="display: none;">
        <img src="templates/maps/how-to/annotation/compass.png" height="75px" width="75px">
    </div>
    <style>
        #annotation {
            color: #DDDDDD;
            font-size: 12px;
            font-family: Roboto;
            background: #3E464C;
            margin: 20px;
            padding: 10px;
            -webkit-border-radius: 2px;
            -moz-border-radius: 2px;
            border-radius: 2px;
            width: 300px;
            -moz-box-shadow: 0px 2px 5px #666;
            -webkit-box-shadow: 0px 2px 5px #666;
            box-shadow: 0px 2px 5px #666;
        }
        .country-label {
            color: white;
            font-size: 25px;
        }
    </style>


<script>
var ele = document.getElementById('container');
if(ele) {
    ele.style.visibility = "visible";
 }   
        </script>
<script src="index.js" type="text/javascript"></script>
</body></html>

Bubble shapes

The following types of shapes are available to render the bubbles in Maps.

  • Circle
  • Square

By default, bubbles are rendered in the “Circle” type. To change the type of the bubble, set the bubbleType property of bubbleSettings property as “Square” to render the square shape bubbles.

Source
Preview
index.js
index.html
Copied to clipboard
var map = new ej.maps.Maps({
    layers: [{
        shapeData: world_map,
        shapeDataPath: 'name',
        shapePropertyPath: 'name',
        bubbleSettings: [{
            bubbleType: 'Square',
            visible: true,
            dataSource: [
                { name: 'India', population: '38332521' },
                { name: 'Pakistan', population: '3090416' }
            ],
            valuePath: 'population'
        }]
    }]
});
map.appendTo('#element');
Copied to clipboard
<!DOCTYPE html><html lang="en"><head>
    <title>EJ2 Maps</title>
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta name="description" content="Typescript UI Controls">
    <meta name="author" content="Syncfusion">
    <link href="index.css" rel="stylesheet">
    
    <script src="world-map.js"></script>
    <script src="usa.js"></script>
    <script src="data.js"></script>
    <script src="california.js"></script>
    <script src="texas.js"></script>
    <script src="africa_continent.js"></script>
    <script src="africa.js"></script>
    <script src="cluster.js"></script>
    
<script src="https://cdn.syncfusion.com/ej2/dist/ej2.min.js" type="text/javascript"></script>
</head>

<body>
    
    <div id="container" style="height: 500px; width: 700px">
        <div id="element"></div>
    </div>
    <svg height="150" width="400">
        <defs>
            <linearGradient id="grad1" x1="0%" y1="0%" x2="0%" y2="100%">
                <stop offset="0%" style="stop-color:#C5494B;stop-opacity:1"></stop>
                <stop offset="100%" style="stop-color:#4C134F;stop-opacity:1"></stop>
            </linearGradient>
        </defs>
    </svg>
    <!-- annotation content -->
    <div id="maps-annotation" style="display: none;">
        <div id="annotation">
            <div>
                <p style="margin-left:10px;font-size:13px;font-weight:500">Facts about Africa</p>
            </div>
            <hr style="margin-top:-3px;margin-bottom:10px;border:0.5px solid #DDDDDD">
            <div>
                <ul style="list-style-type:disc; margin-left:-20px;margin-bottom:2px; font-weight:400">
                    <li>Africa is the second largest and second most populated continent in the world.</li>
                    <li style="padding-top:5px;">Africa has 54 sovereign states and 10 non-sovereign territories.</li>
                    <li style="padding-top:5px;">Algeria is the largest country in Africa, where as Mayotte is the smallest.</li>
                </ul>
            </div>
        </div>
    </div>
    <div id="compass-maps" style="display: none;">
        <img src="templates/maps/how-to/annotation/compass.png" height="75px" width="75px">
    </div>
    <style>
        #annotation {
            color: #DDDDDD;
            font-size: 12px;
            font-family: Roboto;
            background: #3E464C;
            margin: 20px;
            padding: 10px;
            -webkit-border-radius: 2px;
            -moz-border-radius: 2px;
            border-radius: 2px;
            width: 300px;
            -moz-box-shadow: 0px 2px 5px #666;
            -webkit-box-shadow: 0px 2px 5px #666;
            box-shadow: 0px 2px 5px #666;
        }
        .country-label {
            color: white;
            font-size: 25px;
        }
    </style>


<script>
var ele = document.getElementById('container');
if(ele) {
    ele.style.visibility = "visible";
 }   
        </script>
<script src="index.js" type="text/javascript"></script>
</body></html>

Customization

The following properties are available in bubbleSettings property to customize the bubbles of the Maps component.

  • border – To customize the color, width and opacity of the border of the bubbles in Maps.
  • fill – To apply the color for bubbles in Maps.
  • opacity – To apply opacity to the bubbles in Maps.
  • animationDelay - To change the time delay in the transition for bubbles.
  • animationDuration - To change the time duration of animation for bubbles.
  • highlightSettings - To customize the highlight settings for the bubbles in Maps.
  • selectionSettings - To customize the selection settings for the bubbles in Maps.
Source
Preview
index.js
index.html
Copied to clipboard
var map = new ej.maps.Maps({
     layers: [{
        shapeData: world_map,
        shapeDataPath: 'name',
        shapePropertyPath: 'name',
        bubbleSettings: [{
            visible: true,
            minRadius: 5,
            dataSource: [
                { name: 'India', population: '38332521' },
                { name: 'New Zealand', population: '19651127' },
                { name: 'Pakistan', population: '3090416' }
            ],
            fill: 'green',
            animationDelay: 100,
            animationDuration: 1000,
            maxRadius: 80,
            border: {
                color: 'blue',
                width: 2
            },
            opacity: 1,
            valuePath: 'population'
        }]
    }]
});
map.appendTo('#element');
Copied to clipboard
<!DOCTYPE html><html lang="en"><head>
    <title>EJ2 Maps</title>
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta name="description" content="Typescript UI Controls">
    <meta name="author" content="Syncfusion">
    <link href="index.css" rel="stylesheet">
    
    <script src="world-map.js"></script>
    <script src="usa.js"></script>
    <script src="data.js"></script>
    <script src="california.js"></script>
    <script src="texas.js"></script>
    <script src="africa_continent.js"></script>
    <script src="africa.js"></script>
    <script src="cluster.js"></script>
    
<script src="https://cdn.syncfusion.com/ej2/dist/ej2.min.js" type="text/javascript"></script>
</head>

<body>
    
    <div id="container" style="height: 500px; width: 700px">
        <div id="element"></div>
    </div>
    <svg height="150" width="400">
        <defs>
            <linearGradient id="grad1" x1="0%" y1="0%" x2="0%" y2="100%">
                <stop offset="0%" style="stop-color:#C5494B;stop-opacity:1"></stop>
                <stop offset="100%" style="stop-color:#4C134F;stop-opacity:1"></stop>
            </linearGradient>
        </defs>
    </svg>
    <!-- annotation content -->
    <div id="maps-annotation" style="display: none;">
        <div id="annotation">
            <div>
                <p style="margin-left:10px;font-size:13px;font-weight:500">Facts about Africa</p>
            </div>
            <hr style="margin-top:-3px;margin-bottom:10px;border:0.5px solid #DDDDDD">
            <div>
                <ul style="list-style-type:disc; margin-left:-20px;margin-bottom:2px; font-weight:400">
                    <li>Africa is the second largest and second most populated continent in the world.</li>
                    <li style="padding-top:5px;">Africa has 54 sovereign states and 10 non-sovereign territories.</li>
                    <li style="padding-top:5px;">Algeria is the largest country in Africa, where as Mayotte is the smallest.</li>
                </ul>
            </div>
        </div>
    </div>
    <div id="compass-maps" style="display: none;">
        <img src="templates/maps/how-to/annotation/compass.png" height="75px" width="75px">
    </div>
    <style>
        #annotation {
            color: #DDDDDD;
            font-size: 12px;
            font-family: Roboto;
            background: #3E464C;
            margin: 20px;
            padding: 10px;
            -webkit-border-radius: 2px;
            -moz-border-radius: 2px;
            border-radius: 2px;
            width: 300px;
            -moz-box-shadow: 0px 2px 5px #666;
            -webkit-box-shadow: 0px 2px 5px #666;
            box-shadow: 0px 2px 5px #666;
        }
        .country-label {
            color: white;
            font-size: 25px;
        }
    </style>


<script>
var ele = document.getElementById('container');
if(ele) {
    ele.style.visibility = "visible";
 }   
        </script>
<script src="index.js" type="text/javascript"></script>
</body></html>

Setting color to the bubbles from the data source

The color for each bubble in the Maps can be set using the colorValuePath property of bubbleSettings property. The value for the colorValuePath property is the field name from the data source of the bubbleSettings property which contains the color values.

Source
Preview
index.js
index.html
Copied to clipboard
var map = new ej.maps.Maps({
    layers: [{
        shapeData: world_map,
        shapeDataPath: 'name',
        shapePropertyPath: 'name',
        bubbleSettings: [{
            visible: true,
            minRadius: 20,
            colorValuePath: 'color',
            dataSource: [
                { name: 'India', population: '38332521', color: 'blue' },
                { name: 'New Zealand', population: '19651127', color: '#c2d2d6'  },
                { name: 'Pakistan', population: '3090416', color: '#09156d'  }
            ],
            maxRadius: 40,
            valuePath: 'population'
        }]
    }]
});
map.appendTo('#element');
Copied to clipboard
<!DOCTYPE html><html lang="en"><head>
    <title>EJ2 Maps</title>
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta name="description" content="Typescript UI Controls">
    <meta name="author" content="Syncfusion">
    <link href="index.css" rel="stylesheet">
    
    <script src="world-map.js"></script>
    <script src="usa.js"></script>
    <script src="data.js"></script>
    <script src="california.js"></script>
    <script src="texas.js"></script>
    <script src="africa_continent.js"></script>
    <script src="africa.js"></script>
    <script src="cluster.js"></script>
    
<script src="https://cdn.syncfusion.com/ej2/dist/ej2.min.js" type="text/javascript"></script>
</head>

<body>
    
    <div id="container" style="height: 500px; width: 700px">
        <div id="element"></div>
    </div>
    <svg height="150" width="400">
        <defs>
            <linearGradient id="grad1" x1="0%" y1="0%" x2="0%" y2="100%">
                <stop offset="0%" style="stop-color:#C5494B;stop-opacity:1"></stop>
                <stop offset="100%" style="stop-color:#4C134F;stop-opacity:1"></stop>
            </linearGradient>
        </defs>
    </svg>
    <!-- annotation content -->
    <div id="maps-annotation" style="display: none;">
        <div id="annotation">
            <div>
                <p style="margin-left:10px;font-size:13px;font-weight:500">Facts about Africa</p>
            </div>
            <hr style="margin-top:-3px;margin-bottom:10px;border:0.5px solid #DDDDDD">
            <div>
                <ul style="list-style-type:disc; margin-left:-20px;margin-bottom:2px; font-weight:400">
                    <li>Africa is the second largest and second most populated continent in the world.</li>
                    <li style="padding-top:5px;">Africa has 54 sovereign states and 10 non-sovereign territories.</li>
                    <li style="padding-top:5px;">Algeria is the largest country in Africa, where as Mayotte is the smallest.</li>
                </ul>
            </div>
        </div>
    </div>
    <div id="compass-maps" style="display: none;">
        <img src="templates/maps/how-to/annotation/compass.png" height="75px" width="75px">
    </div>
    <style>
        #annotation {
            color: #DDDDDD;
            font-size: 12px;
            font-family: Roboto;
            background: #3E464C;
            margin: 20px;
            padding: 10px;
            -webkit-border-radius: 2px;
            -moz-border-radius: 2px;
            border-radius: 2px;
            width: 300px;
            -moz-box-shadow: 0px 2px 5px #666;
            -webkit-box-shadow: 0px 2px 5px #666;
            box-shadow: 0px 2px 5px #666;
        }
        .country-label {
            color: white;
            font-size: 25px;
        }
    </style>


<script>
var ele = document.getElementById('container');
if(ele) {
    ele.style.visibility = "visible";
 }   
        </script>
<script src="index.js" type="text/javascript"></script>
</body></html>

Bubble sizing

The size of the bubbles is calculated from the values got from the valuePath property. The range for the radius of the bubbles can be modified using minRadius and maxRadius properties.

Source
Preview
index.js
index.html
Copied to clipboard
var map = new ej.maps.Maps({
    layers: [{
        shapeData: world_map,
        shapeDataPath: 'name',
        shapePropertyPath: 'name',
        bubbleSettings: [{
            visible: true,
            minRadius: 5,
            dataSource: [
                { name: 'India', population: '38332521' },
                { name: 'New Zealand', population: '19651127' },
                { name: 'Pakistan', population: '3090416' }
            ],
            maxRadius: 80,
            valuePath: 'population'
        }]
    }]
});
map.appendTo('#element');
Copied to clipboard
<!DOCTYPE html><html lang="en"><head>
    <title>EJ2 Maps</title>
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta name="description" content="Typescript UI Controls">
    <meta name="author" content="Syncfusion">
    <link href="index.css" rel="stylesheet">
    
    <script src="world-map.js"></script>
    <script src="usa.js"></script>
    <script src="data.js"></script>
    <script src="california.js"></script>
    <script src="texas.js"></script>
    <script src="africa_continent.js"></script>
    <script src="africa.js"></script>
    <script src="cluster.js"></script>
    
<script src="https://cdn.syncfusion.com/ej2/dist/ej2.min.js" type="text/javascript"></script>
</head>

<body>
    
    <div id="container" style="height: 500px; width: 700px">
        <div id="element"></div>
    </div>
    <svg height="150" width="400">
        <defs>
            <linearGradient id="grad1" x1="0%" y1="0%" x2="0%" y2="100%">
                <stop offset="0%" style="stop-color:#C5494B;stop-opacity:1"></stop>
                <stop offset="100%" style="stop-color:#4C134F;stop-opacity:1"></stop>
            </linearGradient>
        </defs>
    </svg>
    <!-- annotation content -->
    <div id="maps-annotation" style="display: none;">
        <div id="annotation">
            <div>
                <p style="margin-left:10px;font-size:13px;font-weight:500">Facts about Africa</p>
            </div>
            <hr style="margin-top:-3px;margin-bottom:10px;border:0.5px solid #DDDDDD">
            <div>
                <ul style="list-style-type:disc; margin-left:-20px;margin-bottom:2px; font-weight:400">
                    <li>Africa is the second largest and second most populated continent in the world.</li>
                    <li style="padding-top:5px;">Africa has 54 sovereign states and 10 non-sovereign territories.</li>
                    <li style="padding-top:5px;">Algeria is the largest country in Africa, where as Mayotte is the smallest.</li>
                </ul>
            </div>
        </div>
    </div>
    <div id="compass-maps" style="display: none;">
        <img src="templates/maps/how-to/annotation/compass.png" height="75px" width="75px">
    </div>
    <style>
        #annotation {
            color: #DDDDDD;
            font-size: 12px;
            font-family: Roboto;
            background: #3E464C;
            margin: 20px;
            padding: 10px;
            -webkit-border-radius: 2px;
            -moz-border-radius: 2px;
            border-radius: 2px;
            width: 300px;
            -moz-box-shadow: 0px 2px 5px #666;
            -webkit-box-shadow: 0px 2px 5px #666;
            box-shadow: 0px 2px 5px #666;
        }
        .country-label {
            color: white;
            font-size: 25px;
        }
    </style>


<script>
var ele = document.getElementById('container');
if(ele) {
    ele.style.visibility = "visible";
 }   
        </script>
<script src="index.js" type="text/javascript"></script>
</body></html>

Multiple bubble groups

Multiple groups of bubbles can be added to the Maps using the bubbleSettings property in which the properties of bubbles are added as an array. The customization for the bubbles can be done with the bubbleSettings property. In the following example, the gender-wise population ratio is demonstrated with two different bubble groups.

Source
Preview
index.js
index.html
Copied to clipboard
var map = new ej.maps.Maps({
    layers: [{
        shapeData: world_map,
        shapeDataPath: 'name',
        shapePropertyPath: 'name',
         bubbleSettings: [{
            visible: true,
            minRadius: 5,
            valuePath: "femaleRatio",
            colorValuePath: "femaleRatioColor",
            dataSource: [
                { 
                    country: "United States", femaleRatio: 50.50442726, maleRatio: 49.49557274, femaleRatioColor: "green", maleRatioColor: "blue"
                },
                { 
                    country: "India", femaleRatio: 48.18032713, maleRatio: 51.81967287, femaleRatioColor: "blue", maleRatioColor: "#c2d2d6"
                },
                { 
                    country: "Oman", femaleRatio: 34.15597234, maleRatio: 65.84402766, femaleRatioColor: "#09156d", maleRatioColor: "orange" 
                }, 
                { 
                    country: "United Arab Emirates", femaleRatio: 27.59638942, maleRatio: 72.40361058, femaleRatioColor: "#09156d", maleRatioColor: "orange"
                }
            ],
            maxRadius: 20,
        },
        {
            visible: true,
            bubbleType: 'Circle',
            opacity: 0.4,
            minRadius: 15,
            valuePath: "maleRatio",
            colorValuePath: "maleRatioColor",
            dataSource: [
                { 
                    country: "United States", femaleRatio: 50.50442726, maleRatio: 49.49557274, femaleRatioColor: "green", maleRatioColor: "blue"
                },
                { 
                    country: "India", femaleRatio: 48.18032713, maleRatio: 51.81967287, femaleRatioColor: "blue", maleRatioColor: "#c2d2d6"
                },
                { 
                    country: "Oman", femaleRatio: 34.15597234, maleRatio: 65.84402766, femaleRatioColor: "#09156d", maleRatioColor: "orange" 
                }, 
                { 
                    country: "United Arab Emirates", femaleRatio: 27.59638942, maleRatio: 72.40361058, femaleRatioColor: "#09156d", maleRatioColor: "orange"
                }
            ],
            maxRadius: 25,
        }]
    }]
});
map.appendTo('#element');
Copied to clipboard
<!DOCTYPE html><html lang="en"><head>
    <title>EJ2 Maps</title>
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta name="description" content="Typescript UI Controls">
    <meta name="author" content="Syncfusion">
    <link href="index.css" rel="stylesheet">
    
    <script src="world-map.js"></script>
    <script src="usa.js"></script>
    <script src="data.js"></script>
    <script src="california.js"></script>
    <script src="texas.js"></script>
    <script src="africa_continent.js"></script>
    <script src="africa.js"></script>
    <script src="cluster.js"></script>
    
<script src="https://cdn.syncfusion.com/ej2/dist/ej2.min.js" type="text/javascript"></script>
</head>

<body>
    
    <div id="container" style="height: 500px; width: 700px">
        <div id="element"></div>
    </div>
    <svg height="150" width="400">
        <defs>
            <linearGradient id="grad1" x1="0%" y1="0%" x2="0%" y2="100%">
                <stop offset="0%" style="stop-color:#C5494B;stop-opacity:1"></stop>
                <stop offset="100%" style="stop-color:#4C134F;stop-opacity:1"></stop>
            </linearGradient>
        </defs>
    </svg>
    <!-- annotation content -->
    <div id="maps-annotation" style="display: none;">
        <div id="annotation">
            <div>
                <p style="margin-left:10px;font-size:13px;font-weight:500">Facts about Africa</p>
            </div>
            <hr style="margin-top:-3px;margin-bottom:10px;border:0.5px solid #DDDDDD">
            <div>
                <ul style="list-style-type:disc; margin-left:-20px;margin-bottom:2px; font-weight:400">
                    <li>Africa is the second largest and second most populated continent in the world.</li>
                    <li style="padding-top:5px;">Africa has 54 sovereign states and 10 non-sovereign territories.</li>
                    <li style="padding-top:5px;">Algeria is the largest country in Africa, where as Mayotte is the smallest.</li>
                </ul>
            </div>
        </div>
    </div>
    <div id="compass-maps" style="display: none;">
        <img src="templates/maps/how-to/annotation/compass.png" height="75px" width="75px">
    </div>
    <style>
        #annotation {
            color: #DDDDDD;
            font-size: 12px;
            font-family: Roboto;
            background: #3E464C;
            margin: 20px;
            padding: 10px;
            -webkit-border-radius: 2px;
            -moz-border-radius: 2px;
            border-radius: 2px;
            width: 300px;
            -moz-box-shadow: 0px 2px 5px #666;
            -webkit-box-shadow: 0px 2px 5px #666;
            box-shadow: 0px 2px 5px #666;
        }
        .country-label {
            color: white;
            font-size: 25px;
        }
    </style>


<script>
var ele = document.getElementById('container');
if(ele) {
    ele.style.visibility = "visible";
 }   
        </script>
<script src="index.js" type="text/javascript"></script>
</body></html>

Enable tooltip for bubble

The tooltip for the bubbles can be enabled by setting the visible property of the tooltipSettings property as true. The content for the tooltip can be set using the valuePath property in the tooltipSettings of the bubbleSettings property where the value for the valuePath property is the field name from the data source of the bubbleSettings property. Also added any HTML element as the template in tooltip using the template property.

Source
Preview
index.js
index.html
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var map = new ej.maps.Maps({
    layers: [{
        shapeData: world_map,
        shapeDataPath: 'name',
        shapePropertyPath: 'name',
        bubbleSettings: [{
            visible: true,
            minRadius: 5,
            dataSource: [
                { name: 'India', population: '38332521' },
                { name: 'New Zealand', population: '19651127' },
                { name: 'Pakistan', population: '3090416' }
            ],
            maxRadius: 80,
            valuePath: 'population',
            tooltipSettings: {
                visible: true,
                valuePath: 'population',
            }
        }]
    }]
});
map.appendTo('#element');
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<!DOCTYPE html><html lang="en"><head>
    <title>EJ2 Maps</title>
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta name="description" content="Typescript UI Controls">
    <meta name="author" content="Syncfusion">
    <link href="index.css" rel="stylesheet">
    
    <script src="world-map.js"></script>
    <script src="usa.js"></script>
    <script src="data.js"></script>
    <script src="california.js"></script>
    <script src="texas.js"></script>
    <script src="africa_continent.js"></script>
    <script src="africa.js"></script>
    <script src="cluster.js"></script>
    
<script src="https://cdn.syncfusion.com/ej2/dist/ej2.min.js" type="text/javascript"></script>
</head>

<body>
    
    <div id="container" style="height: 500px; width: 700px">
        <div id="element"></div>
    </div>
    <svg height="150" width="400">
        <defs>
            <linearGradient id="grad1" x1="0%" y1="0%" x2="0%" y2="100%">
                <stop offset="0%" style="stop-color:#C5494B;stop-opacity:1"></stop>
                <stop offset="100%" style="stop-color:#4C134F;stop-opacity:1"></stop>
            </linearGradient>
        </defs>
    </svg>
    <!-- annotation content -->
    <div id="maps-annotation" style="display: none;">
        <div id="annotation">
            <div>
                <p style="margin-left:10px;font-size:13px;font-weight:500">Facts about Africa</p>
            </div>
            <hr style="margin-top:-3px;margin-bottom:10px;border:0.5px solid #DDDDDD">
            <div>
                <ul style="list-style-type:disc; margin-left:-20px;margin-bottom:2px; font-weight:400">
                    <li>Africa is the second largest and second most populated continent in the world.</li>
                    <li style="padding-top:5px;">Africa has 54 sovereign states and 10 non-sovereign territories.</li>
                    <li style="padding-top:5px;">Algeria is the largest country in Africa, where as Mayotte is the smallest.</li>
                </ul>
            </div>
        </div>
    </div>
    <div id="compass-maps" style="display: none;">
        <img src="templates/maps/how-to/annotation/compass.png" height="75px" width="75px">
    </div>
    <style>
        #annotation {
            color: #DDDDDD;
            font-size: 12px;
            font-family: Roboto;
            background: #3E464C;
            margin: 20px;
            padding: 10px;
            -webkit-border-radius: 2px;
            -moz-border-radius: 2px;
            border-radius: 2px;
            width: 300px;
            -moz-box-shadow: 0px 2px 5px #666;
            -webkit-box-shadow: 0px 2px 5px #666;
            box-shadow: 0px 2px 5px #666;
        }
        .country-label {
            color: white;
            font-size: 25px;
        }
    </style>


<script>
var ele = document.getElementById('container');
if(ele) {
    ele.style.visibility = "visible";
 }   
        </script>
<script src="index.js" type="text/javascript"></script>
</body></html>