Introduction
Today we are going to learn how to create a Windows Store App for Video Playlist using JavaScript. 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 app, add two JavaScript pages by right-clicking on the js folder in the Solution Explorer and select Add > new item > JavaScript Page and then give an appropriate name. In the same way, add one HTML page to your project.
Write the following code in default.html:
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8" />
<title>app</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/scrtipt1.js"></script>
<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 default.js:
(function () {
"use strict";
var appTitle = "";
var pages = [
{ url: "page.html", title: "Stereo 3D" }
];
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,
videoOnError: function (error) {
switch (error.target.error.code) {
case error.target.error.MEDIA_ERR_ABORTED:
App.displayError("You aborted the video playback.");
break;
case error.target.error.MEDIA_ERR_NETWORK:
App.displayError("A network error caused the video download to fail part-way.");
break;
case error.target.error.MEDIA_ERR_DECODE:
App.displayError("The video playback was aborted due to a corruption problem or because the video used features your browser did not support.");
break;
case error.target.error.MEDIA_ERR_SRC_NOT_SUPPORTED:
App.displayError("The video could not be loaded, either because the server or network failed or because the format is not supported.");
break;
default:
App.displayError("An unknown error occurred.");
break;
}
},
displayStatus: function (msg) {
WinJS.log && WinJS.log(msg, null, "status");
},
displayError: function (msg) {
WinJS.log && WinJS.log(msg, null, "error");
}
});
WinJS.Application.addEventListener("activated", activated, false);
WinJS.Application.start();
})();
Write the following code in page.html:
<!DOCTYPE html>
<html>
<head>
<title></title>
<script src="/js/script.js"></script>
</head>
<body>
<div data-win-control="App.pageInput">
<button class="action" id="multitrackStart">
Play</button>
<button class="action" id="multitrackStartChannel1">
English</button>
<button class="action" id="multitrackStartChannel2">
Hindi</button>
<button class="action" id="multitrackStartChannel3">
Chinese</button>
<button class="action" id="multitrackStartChannel4">
Polish</button>
<button class="action secondary" id="multitrackStop">
Pause</button>
<br />
<br />
</div>
<div data-win-control="App.pageOutput">
<video id="multitrackVideo" src="/vidio/LadyWashington_MultiLang.mp4" style="position: relative; width: 50%;" poster="images/images.jpeg" loop>
</video>
</div>
</body>
</html>
Write the following code in script.js:
(function () {
"use strict";
var page = WinJS.UI.Pages.define("page.html", {
ready: function (element, options) {
WinJS.Utilities.query("#multitrackStart").listen("click", multitrackStart);
WinJS.Utilities.query("#multitrackStartChannel1").listen("click", getMultitrackFunction("en"));
WinJS.Utilities.query("#multitrackStartChannel2").listen("click", getMultitrackFunction("hi"));
WinJS.Utilities.query("#multitrackStartChannel3").listen("click", getMultitrackFunction("zh"));
WinJS.Utilities.query("#multitrackStartChannel4").listen("click", getMultitrackFunction("pl"));
WinJS.Utilities.query("#multitrackStop").listen("click", multitrackStop);
WinJS.Utilities.query("#multitrackVideo").listen("error", App.videoOnError);
},
unload: function () {
multitrackStop();
}
});
function multitrackStart() {
App.displayError("");
var vid = WinJS.Utilities.query("#multitrackVideo")[0];
vid.play();
}
function getMultitrackFunction(channel) {
return function () {
App.displayError("");
var vid = WinJS.Utilities.query("#multitrackVideo")[0];
for (var ch = 0; ch < vid.audioTracks.length; ch++) {
vid.audioTracks[ch].enabled = (vid.audioTracks[ch].language === channel);
}
};
}
function multitrackStop() {
var vid = WinJS.Utilities.query("#multitrackVideo")[0];
if (!vid.paused) {
vid.pause();
}
}
})();
Write the following code in script1.js:
(function () {
var pageOutput = WinJS.Class.define(
function (element, options) {
element.winControl = this;
this.element = element;
new WinJS.Utilities.QueryCollection(element)
.setAttribute("role", "region")
.setAttribute("aria-labelledby", "outputLabel")
.setAttribute("aria-live", "assertive");
element.id = "output";
this._addOutputLabel(element);
this._addStatusOutput(element);
}, {
_addOutputLabel: function (element) {
var label = document.createElement("h2");
label.id = "outputLabel";
label.textContent = "Output";
element.parentNode.insertBefore(label, element);
},
_addStatusOutput: function (element) {
var statusDiv = document.createElement("div");
statusDiv.id = "statusMessage";
element.insertBefore(statusDiv, element.childNodes[0]);
}
}
);
var currentpageUrl = null;
WinJS.Navigation.addEventListener("navigating", function (evt) {
currentpageUrl = evt.detail.location;
});
WinJS.log = function (message, tag, type) {
var statusDiv = document.getElementById("statusMessage");
};
function activated(e) {
WinJS.Utilities.query("#featureLabel")[0].textContent = App.appTitle;
}
WinJS.Application.addEventListener("activated", activated, false);
WinJS.Namespace.define("App", {
pageOutput: pageOutput
});
})();
Output:
![playlist-window-store-app.jpg]()
![multitrack-in-windows-store-apps.jpg]()
Summary
In this article I described how to create a Windows Store App for video Playlist using JavaScript. I hope this article has helped you in understanding this topic. Please share it. If you know more about this, your feedback and constructive contributions are welcome.