Introduction
In this article I describe how to create Windows Store Apps for swapping a template using JavaScript. To change the List View control's template, set its item template property to the declarative template or templating function you want to use instead.
I assume you can create a simple Windows Store App using JavaScript; for more help visit Simple Windows Store Apps using JavaScript.
To start the creation of the apps, add one JavaScript page by right-clicking on the js folder in the Solution Explorer and select "Add" > "New item" > "JavaScript Page" and then provide an appropriate name. In the same way, add a HTML page to your project.
![swapping-in-windows-store-apps.jpg]()
Write the following code in the default.html:
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8" />
<title></title>
<link rel="stylesheet" href="//Microsoft.WinJS.1.0/css/ui-light.css" />
<script src="//Microsoft.WinJS.1.0/js/base.js"></script>
<script src="//Microsoft.WinJS.1.0/js/ui.js"></script>
<link rel="stylesheet" href="/css/default.css" />
<script src="/js/default.js"></script>
</head>
<body role="application" style="background-color: lightgreen">
<center><div id="rootGrid">
<div id="content">
<h1 id="featureLabel"></h1>
<div id="contentHost"></div>
</div>
</div>
</center>
</body>
</html>
Write the following code in the default.js:
(function () {
"use strict";
var appTitle = "";
var pages = [
{ url: "page.html" }
];
function activated(eventObject) {
if (eventObject.detail.kind === Windows.ApplicationModel.Activation.ActivationKind.launch) {
eventObject.setPromise(WinJS.UI.processAll().then(function () {
var url = WinJS.Application.sessionState.lastUrl || pages[0].url;
return WinJS.Navigation.navigate(url);
}));
}
}
WinJS.Navigation.addEventListener("navigated", function (eventObject) {
var url = eventObject.detail.location;
var host = document.getElementById("contentHost");
host.winControl && host.winControl.unload && host.winControl.unload();
WinJS.Utilities.empty(host);
eventObject.detail.setPromise(WinJS.UI.Pages.render(url, host, eventObject.detail.state).then(function () {
WinJS.Application.sessionState.lastUrl = url;
}));
});
WinJS.Namespace.define("App", {
appTitle: appTitle,
pages: pages
});
WinJS.Application.addEventListener("activated", activated, false);
WinJS.Application.start();
})();
Write the following code in the page.html:
<!DOCTYPE html>
<html>
<head>
<title></title>
<link rel="stylesheet" href="/css/page3.css" />
<script src="/js/script.js"></script>
</head>
<body>
<div data-win-control="App.pageInput">
<button id="swapTemplateButton" class="action">Swap item template</button>
</div>
<div data-win-control="App.pageOutput">
<div id="regularListIconTextTemplate" data-win-control="WinJS.Binding.Template" style="display: none">
<div class="regularListIconTextItem">
<img src="#" class="regularListIconTextItem-Image" data-win-bind="src: picture" />
<div class="regularListIconTextItem-Detail">
<h4 data-win-bind="innerText: title"></h4>
<h6 data-win-bind="innerText: text"></h6>
</div>
</div>
</div>
<div id="regularListIconTemplate" data-win-control="WinJS.Binding.Template" style="display: none">
<div class="regularListIconItem">
<img src="#" class="regularListIconItem-Image" data-win-bind="src: picture" />
</div>
</div>
<div id="listView"
class="win-selectionstylefilled"
data-win-control="WinJS.UI.ListView"
data-win-options="{
itemDataSource: myData.dataSource,
itemTemplate: regularListIconTemplate,
selectionMode: 'none',
tapBehavior: 'none',
swipeBehavior: 'none',
layout: { type: WinJS.UI.GridLayout }
}">
</div>
</div>
</body>
</html>
Write the following code in the script.js:
(function () {
"use strict";
var page = WinJS.UI.Pages.define("page.html", {
ready: function (element, options) {
var listView = element.querySelector("#listView").winControl;
listView.forceLayout();
listView.itemTemplate = regularListIconTemplate;
var CurrentTemplate_regularListIconTemplate = true;
function swapTemplate() {
if (CurrentTemplate_regularListIconTemplate) {
listView.itemTemplate = regularListIconTextTemplate;
CurrentTemplate_regularListIconTemplate = false;
} else {
listView.itemTemplate = regularListIconTemplate;
CurrentTemplate_regularListIconTemplate = true;
}
}
element.querySelector("#swapTemplateButton").addEventListener("click", swapTemplate, false);
}
});
})();
var myData = new WinJS.Binding.List([
{ title: "Samsung", text: "Samsung", picture: "images/1.jpg" },
{ title: "Nokia", text: "Nokia", picture: "images/2.jpg" },
{ title: "Apple", text: "Apple", picture: "images/3.jpg" },
{ title: "Macromax", text: "Nokia", picture: "images/4.jpg" },
{ title: "Samsung", text: "Samsung", picture: "images/1.jpg" },
{ title: "Nokia", text: "Nokia", picture: "images/2.jpg" },
{ title: "Apple", text: "Apple", picture: "images/3.jpg" },
{ title: "Macromax", text: "Nokia", picture: "images/4.jpg" }
]);
Output:
![swapping-in-windows-store-app.jpg]()
Summary
In this article I described how to create a Windows Store App for swapping a template using JavaScript. I hope this article has helped you to understand this topic. Please share it. If you know more about this, your feedback and constructive contributions are welcome.