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Tree View

Hierarchical Data Structure

Documentation
The TreeView widget displays a hierarchical collection of items using a traditional tree structure. TreeView nodes can be expanded and collapsed to display sub-items.
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window.onload = function() { var searchValue = ko.observable(""), productName = ko.observable(""), productPrice = ko.observable(""), productImage = ko.observable(""); var viewModel = { treeViewOptions: { items: products, width: 300, searchValue: searchValue, onItemClick: function(e) { var item = e.itemData; if(item.price) { productImage(item.image); productName(item.text); productPrice("$" + item.price); } else { productPrice(""); } } }, searchOptions: { value: searchValue, placeholder: "Search", width: 300, mode: "search", valueChangeEvent: "keyup" }, productName: productName, productPrice: productPrice, productImage: productImage }; ko.applyBindings(viewModel, document.getElementById("treeview")); };
<!DOCTYPE html> <html xmlns="http://www.w3.org/1999/xhtml"> <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=1.0" /> <script src="js/jquery-3.1.0.min.js"></script> <script src="https://cdnjs.cloudflare.com/ajax/libs/knockout/3.4.0/knockout-min.js"></script> <link rel="stylesheet" type="text/css" href="https://cdn3.devexpress.com/jslib/17.1.4/css/dx.spa.css" /> <link rel="stylesheet" type="text/css" href="https://cdn3.devexpress.com/jslib/17.1.4/css/dx.common.css" /> <link rel="dx-theme" data-theme="generic.light" href="https://cdn3.devexpress.com/jslib/17.1.4/css/dx.light.css" /> <script src="https://cdn3.devexpress.com/jslib/17.1.4/js/dx.all.js"></script> <script src="data.js"></script> <link rel="stylesheet" type ="text/css" href ="styles.css" /> <script src="index.js"></script> </head> <body class="dx-viewport"> <div class="demo-container"> <div class="form" id="treeview"> <div data-bind="dxTextBox: searchOptions"></div> <div id="simple-treeview" data-bind="dxTreeView: treeViewOptions"></div> <!-- ko if: productPrice() --> <div id="product-details"> <img src="" data-bind="attr: { src: productImage }" /> <div class="name" data-bind="text: productName"></div> <div class="price" data-bind="text: productPrice"></div> </div> <!-- /ko --> </div> </div> </body> </html>
#simple-treeview, #product-details { display: inline-block; } #product-details { vertical-align: top; width: 400px; height: 420px; margin-left: 20px; } #product-details > img { border: none; height: 300px; width: 400px; } #product-details > .name { text-align: center; font-size: 20px; } #product-details > .price { text-align: center; font-size: 24px; } .dark #product-details > div { color: #f0f0f0; } .hidden { visibility: hidden; }
var products = [{ id: "1", text: "Stores", expanded: true, items: [{ id: "1_1", text: "Super Mart of the West", expanded: true, items: [{ id: "1_1_1", text: "Video Players", items: [{ id: "1_1_1_1", text: "HD Video Player", price: 220, image: "../../../../images/products/1.png" }, { id: "1_1_1_2", text: "SuperHD Video Player", image: "../../../../images/products/2.png", price: 270 }] }, { id: "1_1_2", text: "Televisions", expanded: true, items: [{ id: "1_1_2_1", text: "SuperLCD 42", image: "../../../../images/products/7.png", price: 1200 }, { id: "1_1_2_2", text: "SuperLED 42", image: "../../../../images/products/5.png", price: 1450 }, { id: "1_1_2_3", text: "SuperLED 50", image: "../../../../images/products/4.png", price: 1600 }, { id: "1_1_2_4", text: "SuperLCD 55", image: "../../../../images/products/6.png", price: 1350 }, { id: "1_1_2_5", text: "SuperLCD 70", image: "../../../../images/products/9.png", price: 4000 }] }, { id: "1_1_3", text: "Monitors", expanded: true, items: [{ id: "1_1_3_1", text: "19\"", expanded: true, items: [{ id: "1_1_3_1_1", text: "DesktopLCD 19", image: "../../../../images/products/10.png", price: 160 }] }, { id: "1_1_3_2", text: "21\"", items: [{ id: "1_1_3_2_1", text: "DesktopLCD 21", image: "../../../../images/products/12.png", price: 170 }, { id: "1_1_3_2_2", text: "DesktopLED 21", image: "../../../../images/products/13.png", price: 175 }] }] }, { id: "1_1_4", text: "Projectors", items: [{ id: "1_1_4_1", text: "Projector Plus", image: "../../../../images/products/14.png", price: 550 }, { id: "1_1_4_2", text: "Projector PlusHD", image: "../../../../images/products/15.png", price: 750 }] }] }, { id: "1_2", text: "Braeburn", items: [{ id: "1_2_1", text: "Video Players", items: [{ id: "1_2_1_1", text: "HD Video Player", image: "../../../../images/products/1.png", price: 240 }, { id: "1_2_1_2", text: "SuperHD Video Player", image: "../../../../images/products/2.png", price: 300 }] }, { id: "1_2_2", text: "Televisions", items: [{ id: "1_2_2_1", text: "SuperPlasma 50", image: "../../../../images/products/3.png", price: 1800 }, { id: "1_2_2_2", text: "SuperPlasma 65", image: "../../../../images/products/8.png", price: 3500 }] }, { id: "1_2_3", text: "Monitors", items: [{ id: "1_2_3_1", text: "19\"", items: [{ id: "1_2_3_1_1", text: "DesktopLCD 19", image: "../../../../images/products/10.png", price: 170 }] }, { id: "1_2_3_2", text: "21\"", items: [{ id: "1_2_3_2_1", text: "DesktopLCD 21", image: "../../../../images/products/12.png", price: 180 }, { id: "1_2_3_2_2", text: "DesktopLED 21", image: "../../../../images/products/13.png", price: 190 }] }] }] }, { id: "1_3", text: "E-Mart", items: [{ id: "1_3_1", text: "Video Players", items: [{ id: "1_3_1_1", text: "HD Video Player", image: "../../../../images/products/1.png", price: 220 }, { id: "1_3_1_2", text: "SuperHD Video Player", image: "../../../../images/products/2.png", price: 275 }] }, { id: "1_3_3", text: "Monitors", items: [{ id: "1_3_3_1", text: "19\"", items: [{ id: "1_3_3_1_1", text: "DesktopLCD 19", image: "../../../../images/products/10.png", price: 165 }] }, { id: "1_3_3_2", text: "21\"", items: [{ id: "1_3_3_2_1", text: "DesktopLCD 21", image: "../../../../images/products/12.png", price: 175 }] }] }] }, { id: "1_4", text: "Walters", items: [{ id: "1_4_1", text: "Video Players", items: [{ id: "1_4_1_1", text: "HD Video Player", image: "../../../../images/products/1.png", price: 210 }, { id: "1_4_1_2", text: "SuperHD Video Player", image: "../../../../images/products/2.png", price: 250 }] }, { id: "1_4_2", text: "Televisions", items: [{ id: "1_4_2_1", text: "SuperLCD 42", image: "../../../../images/products/7.png", price: 1100 }, { id: "1_4_2_2", text: "SuperLED 42", image: "../../../../images/products/5.png", price: 1400 }, { id: "1_4_2_3", text: "SuperLED 50", image: "../../../../images/products/4.png", price: 1500 }, { id: "1_4_2_4", text: "SuperLCD 55", image: "../../../../images/products/6.png", price: 1300 }, { id: "1_4_2_5", text: "SuperLCD 70", image: "../../../../images/products/9.png", price: 4000 }, { id: "1_4_2_6", text: "SuperPlasma 50", image: "../../../../images/products/3.png", price: 1700 }] }, { id: "1_4_3", text: "Monitors", items: [{ id: "1_4_3_1", text: "19\"", items: [{ id: "1_4_3_1_1", text: "DesktopLCD 19", image: "../../../../images/products/10.png", price: 160 }] }, { id: "1_4_3_2", text: "21\"", items: [{ id: "1_4_3_2_1", text: "DesktopLCD 21", image: "../../../../images/products/12.png", price: 170 }, { id: "1_4_3_2_2", text: "DesktopLED 21", image: "../../../../images/products/13.png", price: 180 }] }] }, { id: "1_4_4", text: "Projectors", items: [{ id: "1_4_4_1", text: "Projector Plus", image: "../../../../images/products/14.png", price: 550 }, { id: "1_4_4_2", text: "Projector PlusHD", image: "../../../../images/products/15.png", price: 750 }] }] }] }];