Introduction
In this article I describe how to create Windows Store Apps for adding controls to a Template using JavaScript. This app embeds a ratings control and displays the rating supplied by the data. This page uses a JavaScript function to template the items, which enables event listeners to be attached to individual items.
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.
![Control-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:lightcoral">
<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/page6.css" />
<script src="/js/script.js"></script>
</head>
<body>
<div data-win-control="App.pageInput">
</div>
<div data-win-control="App.pageOutput">
<div id="listView"
class="win-selectionstylefilled"
data-win-control="WinJS.UI.ListView"
data-win-options="{
itemDataSource: myDataWithRatings.dataSource,
itemTemplate: MyInteractiveTemplate,
selectionMode: 'none',
tapBehavior: 'none',
swipeBehavior: 'none',
layout: { type: WinJS.UI.GridLayout }
}">
</div>
</div>
</body>
</html>
Write the following code in the Script.js:
var MyInteractiveTemplate = WinJS.Utilities.markSupportedForProcessing(function MyInteractiveTemplate(itemPromise) {
return itemPromise.then(function (currentItem) {
var result = document.createElement("div");
result.className = "regularListIconTextItem";
result.style.overflow = "hidden";
var image = document.createElement("img");
image.className = "regularListIconTextItem-Image";
image.src = currentItem.data.picture;
result.appendChild(image);
var body = document.createElement("div");
body.className = "regularListIconTextItem-Detail";
body.style.overflow = "hidden";
result.appendChild(body);
var title = document.createElement("h4");
title.innerText = currentItem.data.title;
body.appendChild(title);
var ratingsControl = new WinJS.UI.Rating();
WinJS.Utilities.addClass(ratingsControl.element, "win-interactive");
body.appendChild(ratingsControl.element);
var currentRating = currentItem.data.rating;
if (typeof (currentItem.data.userRating) === "number") {
ratingsControl.userRating = currentRating;
} else {
ratingsControl.averageRating = currentRating;
}
ratingsControl.addEventListener("change", function (eventObject) {
var newRating = eventObject.detail.tentativeRating;
currentItem.data.rating = newRating;
currentItem.data.userRating = newRating;
WinJS.log && WinJS.log("Rating for " + currentItem.data.title + " changed to " + newRating, "app", "status");
});
return result;
});
});
var myDataWithRatings = new WinJS.Binding.List([
{ title: "Lenovo", text: "Lenovo", picture: "images/1.jpg", rating: 3 },
{ title: "HP", text: "HP", picture: "images/2.jpg", rating: 1 },
{ title: "Samsung", text: "Samsung", picture: "images/3.jpg", rating: 1 },
{ title: "Dell", text: "Dell", picture: "images/4.jpg", rating: 2 },
]);
Output:
![Control-in-windows-store-app.jpg]()
Summary:
In this article I described how to create a Windows Store App for adding controls to 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.