Selection and highlight in EJ2 JavaScript Treemap control
19 Apr 202313 minutes to read
Selection
Selection is used to select a particular group or item to differentiate from other items. Each item or each group can be selected and deselected while interacting with the items. The corresponding Treemap items are also selected while tapping a specific legend item, and vice versa.
The fill property is used to change the selected item color. The color and the width properties are used to customize the selected item border, and the selection is enabled by using the enable property to true in the selectionSettings.
var treemap = new ej.treemap.TreeMap({
dataSource: [
{ dataType: "Import", type: "Animal products", product: "2010", sales: 20839332874 },
{ dataType: "Import", type: "Animal products", product: "2011", sales: 23098635589 },
{ dataType: "Import", type: "Chemical products", product: "2010", sales: 141637951510 },
{ dataType: "Import", type: "Chemical products", product: "2011", sales: 161550338209 },
{ dataType: "Import", type: "Base metals", product: "2010", sales: 86079439944 },
{ dataType: "Import", type: "Base metals", product: "2011", sales: 103821671535 },
{ dataType: "Import", type: "Textile articles", product: "2010", sales: 97126140830 },
{ dataType: "Import", type: "Textile articles", product: "2011", sales: 104980750811 },
{ dataType: "Export", type: "Animal products", product: "2010", sales: 15845503378 },
{ dataType: "Export", type: "Animal products", product: "2011", sales: 20650111620 },
{ dataType: "Export", type: "Chemical products", product: "2010", sales: 136100054087 },
{ dataType: "Export", type: "Chemical products", product: "2011", sales: 146341672411 },
{ dataType: "Export", type: "Base metals", product: "2010", sales: 59060592813 },
{ dataType: "Export", type: "Base metals", product: "2011", sales: 71785882641 },
{ dataType: "Export", type: "Textile articles", product: "2010", sales: 20982380561 },
{ dataType: "Export", type: "Textile articles", product: "2011", sales: 26016143783 }
],
weightValuePath: 'sales',
levels: [
{ groupPath: 'dataType', fill: '#c5e2f7', headerStyle: { size: '16px' }, headerAlignment: 'Center', groupGap: 5 },
{ groupPath: 'product', fill: '#a4d1f2', headerAlignment: 'Center' , groupGap: 2 }
],
leafItemSettings: {
labelPath: 'type',
fill: '#8ebfe2',
labelPosition: 'Center'
},
selectionSettings: {
enable: true,
fill: '#58a0d3',
border: { width: 0.3, color: 'black' },
opacity: '1'
},
}, '#container');<!DOCTYPE html><html lang="en"><head>
<title>Essential JS 2 for Treemap </title>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta name="description" content="Essential JS 2 for treemap UI Control">
<meta name="author" content="Syncfusion">
<link href="index.css" rel="stylesheet">
<script src="https://cdn.syncfusion.com/ej2/29.1.33/dist/ej2.min.js" type="text/javascript"></script>
<script src="https://cdn.syncfusion.com/ej2/syncfusion-helper.js" type ="text/javascript"></script>
</head>
<body>
<div id="container">
</div>
<script>
var ele = document.getElementById('container');
if(ele) {
ele.style.visibility = "visible";
}
</script>
<script src="index.js" type="text/javascript"></script>
</body></html>Highlight
Highlight is used to highlight an item or group from other items or groups. Each item or each group can be highlighted by hovering the mouse over the items. The corresponding Treemap items are also be highlighted while hovering over a specific legend item, and vice versa.
The fill property is used to change the highlighted item color. The color and the width properties are used to customize the highlighted item border, and the highlight is enabled by setting the enable property to true in the highlightSettings.
var treemap = new ej.treemap.TreeMap({
dataSource: [
{ dataType: "Import", type: "Animal products", product: "2010", sales: 20839332874 },
{ dataType: "Import", type: "Animal products", product: "2011", sales: 23098635589 },
{ dataType: "Import", type: "Chemical products", product: "2010", sales: 141637951510 },
{ dataType: "Import", type: "Chemical products", product: "2011", sales: 161550338209 },
{ dataType: "Import", type: "Base metals", product: "2010", sales: 86079439944 },
{ dataType: "Import", type: "Base metals", product: "2011", sales: 103821671535 },
{ dataType: "Import", type: "Textile articles", product: "2010", sales: 97126140830 },
{ dataType: "Import", type: "Textile articles", product: "2011", sales: 104980750811 },
{ dataType: "Export", type: "Animal products", product: "2010", sales: 15845503378 },
{ dataType: "Export", type: "Animal products", product: "2011", sales: 20650111620 },
{ dataType: "Export", type: "Chemical products", product: "2010", sales: 136100054087 },
{ dataType: "Export", type: "Chemical products", product: "2011", sales: 146341672411 },
{ dataType: "Export", type: "Base metals", product: "2010", sales: 59060592813 },
{ dataType: "Export", type: "Base metals", product: "2011", sales: 71785882641 },
{ dataType: "Export", type: "Textile articles", product: "2010", sales: 20982380561 },
{ dataType: "Export", type: "Textile articles", product: "2011", sales: 26016143783 }
],
weightValuePath: 'sales',
levels: [
{ groupPath: 'dataType', fill: '#c5e2f7', headerStyle: { size: '16px' }, headerAlignment: 'Center', groupGap: 5 },
{ groupPath: 'product', fill: '#a4d1f2', headerAlignment: 'Center' , groupGap: 2 }
],
leafItemSettings: {
labelPath: 'type',
fill: '#8ebfe2',
labelPosition: 'Center'
},
highlightSettings: {
enable: true,
fill: '#71b0dd',
border: { width: 0.3, color: 'black' },
opacity: '1'
}
}, '#container');<!DOCTYPE html><html lang="en"><head>
<title>Essential JS 2 for Treemap </title>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta name="description" content="Essential JS 2 for treemap UI Control">
<meta name="author" content="Syncfusion">
<link href="index.css" rel="stylesheet">
<script src="https://cdn.syncfusion.com/ej2/29.1.33/dist/ej2.min.js" type="text/javascript"></script>
<script src="https://cdn.syncfusion.com/ej2/syncfusion-helper.js" type ="text/javascript"></script>
</head>
<body>
<div id="container">
</div>
<script>
var ele = document.getElementById('container');
if(ele) {
ele.style.visibility = "visible";
}
</script>
<script src="index.js" type="text/javascript"></script>
</body></html>