Login Windows Store Apps

Introduction

In this article I describe how to create Windows Store Apps for Login using JavaScript. If a command requires a small amount of user input before it can be completed, you can collect that information in a flyout.

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.

Write the following code in the default.html:

<!DOCTYPE html>

<html>

<head>

</head>

</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>

</head>

<body>

<p>

Click the "Login" button to launch the user login flyout.

</p>

</div>

</div>

<p>

Username

<br />

</label>

</p>

<p>

Password<br />

</label>

</p>

</form>

</div>

</body>

</html>

Write the following code in the script.html:

(function () {

var loggedIn;

"use strict";

var page = WinJS.UI.Pages.define("page.html", {

ready: function (element, options) {

document.getElementById("loginButton").addEventListener("click", showLoginFlyout, false);

document.getElementById("submitLoginButton").addEventListener("click", submitLogin, false);

document.getElementById("loginFlyout").addEventListener("afterhide", onDismiss, false);

}

});

function showLoginFlyout() {

loggedIn = false;

WinJS.log && WinJS.log("", "app", "status", "status");

var loginButton = document.getElementById("loginButton");

document.getElementById("loginFlyout").winControl.show(loginButton);

}

function submitLogin() {

var error = false;

if (document.getElementById("password").value.trim() === "") {

document.getElementById("passwordError").innerHTML = "Password cannot be blank";

document.getElementById("password").focus();

error = true;

} else {

document.getElementById("passwordError").innerHTML = "";

}

if (document.getElementById("username").value.trim() === "") {

document.getElementById("usernameError").innerHTML = "Username cannot be blank";

document.getElementById("username").focus();

error = true;

} else {

document.getElementById("usernameError").innerHTML = "";

}

if (!error) {

loggedIn = true;

WinJS.log && WinJS.log("You have logged in.", "app", "status");

document.getElementById("loginFlyout").winControl.hide();

}

function onDismiss() {

document.getElementById("username").value = "";

document.getElementById("usernameError").innerHTML = "";

document.getElementById("password").value = "";

document.getElementById("passwordError").innerHTML = "";

if (!loggedIn) {

WinJS.log && WinJS.log("You have not logged in.", "app", "status");

}

})();

Output:

Summary

In this article I described how to create a Windows Store App for Login 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.