JavaScript/jQuery Diagram - Advanced Data Binding

The JavaScript Diagram component accepts functions as expression property values. It allows you to implement custom logic when you bind a diagram to a data source.

In this demo, the nodes and edges collections are bound to a data source. Custom functions are used to get different shape types and font styles for items based on additional data source information.

The autoLayout property specifies an auto-layout algorithm type and orientation that the component uses to build diagrams.

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Backend API

$(() => { $('#diagram').dxDiagram({ nodes: { dataSource: new DevExpress.data.ArrayStore({ key: 'id', data: orgItems, }), typeExpr: itemTypeExpr, textExpr: 'name', widthExpr: itemWidthExpr, heightExpr: itemHeightExpr, textStyleExpr: itemTextStyleExpr, styleExpr: itemStyleExpr, autoLayout: { type: 'tree', orientation: 'horizontal', }, }, edges: { dataSource: new DevExpress.data.ArrayStore({ key: 'id', data: orgLinks, }), styleExpr: linkStyleExpr, fromLineEndExpr: linkFromLineEndExpr, toLineEndExpr: linkToLineEndExpr, }, toolbox: { groups: ['general'], }, }); function itemTypeExpr(obj, value) { if (value) { obj.type = (value === 'rectangle') ? undefined : 'group'; } else { return obj.type === 'group' ? 'ellipse' : 'rectangle'; } return null; } function itemWidthExpr(obj, value) { if (value) { obj.width = value; } else { return obj.width || (obj.type === 'group' && 1.5) || 1; } return null; } function itemHeightExpr(obj, value) { if (value) { obj.height = value; } else { return obj.height || (obj.type === 'group' && 1) || 0.75; } return null; } function itemTextStyleExpr(obj) { if (obj.level === 'senior') { return { 'font-weight': 'bold', 'text-decoration': 'underline' }; } return {}; } function itemStyleExpr(obj) { const style = { stroke: '#444444' }; if (obj.type === 'group') { style.fill = '#f3f3f3'; } return style; } function linkStyleExpr() { return { stroke: '#444444' }; } function linkFromLineEndExpr() { return 'none'; } function linkToLineEndExpr() { return 'none'; } });

<!DOCTYPE html> <html xmlns="http://www.w3.org/1999/xhtml" lang="en"> <head> <title>DevExtreme Demo</title> <meta http-equiv="X-UA-Compatible" content="IE=edge" /> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=5.0" /> <script src="https://ajax.googleapis.com/ajax/libs/jquery/3.5.1/jquery.min.js"></script> <script>window.jQuery || document.write(decodeURIComponent('%3Cscript src="js/jquery.min.js"%3E%3C/script%3E'))</script> <script src="https://cdn3.devexpress.com/jslib/24.2.3/js/dx-diagram.min.js"></script> <link rel="stylesheet" type="text/css" href="https://cdn3.devexpress.com/jslib/24.2.3/css/dx-diagram.min.css" /> <link rel="stylesheet" href="https://cdn3.devexpress.com/jslib/24.2.3/css/dx.light.css" /> <script src="js/dx.all.js"></script> <link rel="stylesheet" type="text/css" href="styles.css" /> <script src="data.js"></script> <script src="index.js"></script> </head> <body class="dx-viewport"> <div class="demo-container"> <div id="diagram"> </div> </div> </body> </html>

#diagram { height: 900px; }

const orgItems = [ { id: '106', name: 'Development', type: 'group', }, { id: '107', name: 'WinForms\nTeam', type: 'group', }, { id: '108', name: 'WPF\nTeam', type: 'group', }, { id: '109', name: 'Javascript\nTeam', type: 'group', }, { id: '110', name: 'ASP.NET\nTeam', type: 'group', }, { id: '112', name: 'Ana\nTrujillo', level: 'senior', }, { id: '113', name: 'Antonio\nMoreno', }, { id: '115', name: 'Christina\nBerglund', }, { id: '116', name: 'Hanna\nMoos', }, { id: '119', name: 'Laurence\nLebihan', }, { id: '120', name: 'Elizabeth\nLincoln', level: 'senior', }, { id: '122', name: 'Patricio\nSimpson', level: 'senior', }, { id: '123', name: 'Francisco\nChang', }, ]; const orgLinks = [ { id: '124', from: '106', to: '108', }, { id: '125', from: '106', to: '109', }, { id: '126', from: '106', to: '107', }, { id: '127', from: '106', to: '110', }, { id: '129', from: '110', to: '112', }, { id: '130', from: '110', to: '113', }, { id: '132', from: '107', to: '115', }, { id: '133', from: '107', to: '116', }, { id: '136', from: '108', to: '119', }, { id: '137', from: '108', to: '120', }, { id: '139', from: '109', to: '122', }, { id: '140', from: '109', to: '123', }, ];