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I'm writting an app in Backbone and Marrionette, and I would like to show notifications on Apple's machines. Can I do this without developing application on iOS? Some JS libraries which can to push notifications if person use Apple phone or tablet.
If you're talking about native push notifications then no. (unless you're wrapping your app in PhoneGap)
If you're talking about push notifications while the person is on the browser then yes.
I've usually rolled my own notifications using either websockets, or signalr in the .NET world, to tell the client that something has happened. There are also a couple services like pusher that can help you get something up a little faster if you don't feel like making your own implementation
No, on iOS push notification are only support by apps.
This is clearly state in the documentation, Notification Programming Guide for Websites :
Note: This document pertains to OS X only. Notifications for websites do not appear on iOS.
Basically you have to implement web side to use Push Notification. It have server side implementation.
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I had developed a web application in ASP.NET MVC using C# which is used for billing purpose. But now the client had a new requirement that he need to connect swiping device so that the customers can pay using their cards.
Now the issue is that how i communicate with the device from javascript? i had tried web socket but is not succeed.Is there any ways to make this possible ?
You can use the self host Web API to communicate with the swiping device.
You can simply create a self hosted Web API to communicate with the swiping device
Make it run on the client machine
Call the API from your java script
It will work perfectly
Look at the documentation of the swiping device, it should explain how you should interface with it.
Of course there's no web browser API to interface with every imaginable peripheral device, so you're simply going to have to put your software development skills to work and create a compatibility layer.
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I have this new project that requires fingerprint bio metrics.
A Regular fingerprint scanner device will be used but I have less idea on how to use web technologies(HTML,JS,etc...) with this device, I already know that one way to do this is through Java. I was wondering if it is possible that this could be done using basic web technologies like JavaScript, HTML5 or even PHP.
All I need to do is to save the image of the scanned fingerprint to a specific file but I am not sure if HTML5 or JavaScript alone can do this.
I need to know if this is really possible and how.
Any solutions will do.
Welcome to 2019
You can now implement Web_Authentication_API https://developer.mozilla.org/en-US/docs/Web/API/Web_Authentication_API
Firstly let me explain you the basic concept. For any external devices to interact , you need a device driver in the PC and a software that co-ordinates with the device driver to receive input and send outputs to the device.
You cannot do that with the sole HTML/JS alone.Also PHP is meant meant only for server side.
If possible your SDK/software supports uploading to internet, you can post & verify the data from the internet using PHP server.
If you prefer to go with JAVA, you can refer the below post:
How to capture biometric information on a webpage by using Java
The WebAuthn is the newest browsers feature that helps you to Authenticate users by Fingerprint Biometric on Mobile devices and Security devices on Desktop devices.
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I'm creating a photo capturing system by using javascript and also HTML5 for my college project. I'm thinking of creating "somehow" called a remote control by using android device to communicate to the web application open on my laptop.
maybe I make you guys confuse already,
let say the android device have a CAPTURE BUTTON. when user click on the button, it will capture the photo inside the laptop web applications. The purpose of the android device is work like a remote control when user tap on the CAPTURE BUTTON. Is there any technology can make this happen?
I have this idea is because of there's a lot of android apps which is can connects to the computer as a mouse or as a keyboard. So, I was thinking is it possible that create a application communicate with the javascript inside of my webapp.
Thank you for answering and viewing the question.
yes it is possible. You can do it by using Node.js. I have created a presentation using Node.js and by using html code. Then I open the controller on laptop and ppt on my mobile application WebView. then I am able to record and save the video automatic as slides changes in my android phone.
so by manipulating some code you can do what ever you want.
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I want to create an application for Windows 8 using HTML/CSS and JavaScript. It is a game and after playing, you have the opportunity to send your score. You also can view all the scores sent by other players.
Where should I store all the scores so they can be accessed from any device? How could I implement this using WinJS?
If you're using HTML/JavaScript directly, then I recommend you use Azure Mobile Services or Buddy.com. Azure Mobile Services is gaining a lot of traction and fits in very nicely with Windows apps for sure. It's a little bit lower level than Buddy.com, so it will give you more power. Buddy.com sort of packages and simplifies a lot of things for you and is a good fit for social games like it sounds like you're talking about.
You can checkout my codeshow project at http://codeshow.codeplex.com if you want to get some general "how to" on HTML/JS apps and you can feel free to contact me if I can help you get started.
Have fun!
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We are looking to implement a group -voice- chat in the browser using node.js on the server. Is this possible?
If you want your solution to be purely JavaScript based on both, server and client side, then you would probably have to wait for the WebRTC, Device API or media capture API and then implement node.js backend for it.
Other than that it is, I would say, a question of Flash oriented APIs on the client side (for accessing devices such as cameras or microphones) and some kind of interoperability with node.js backend in case you don't want to take advantage of Flash Media Server or Red5.
I'm researching and working on the same problem.
This is my proposed stack:-
capturing voice on the client
https://github.com/jiehanzheng/Recorderjs/blob/master/README.md
encoding the captured speech so that it can be shared via Node
https://github.com/jpemartins/speex.js
sharing voice data with multiple users
node.js and socket.io
Somebody wrote a THESIS on this. good read but some missing code in the samples
http://pure.ltu.se/portal/files/36285511/LTU-EX-2012-36247736.pdf
relevant question on so. in particular look at answer by sirjamm
How to Call SPEEX Audio Decode/Encode in HTML5 / JavaScript (Without Flash)
If I get it working, will post the github ref here.
hth