detection

问题 I would like to know, what is the best way to detect tablets and smartphone at the moment? Plugin, user agent detection, touch screen detection etc. Thanks 回答1: Look at the top rated answer at this url: What is the best way to detect a mobile device in jQuery? Current methods from that thread: var isMobile = navigator.userAgent.match(/(iPhone|iPod|iPad|Android|BlackBerry)/); Jquery: $.browser.device = (/android|webos|iphone|ipad|ipod|blackberry|iemobile|opera mini/i.test(navigator.userAgent

问题 Closed. This question is off-topic. It is not currently accepting answers. Want to improve this question? Update the question so it's on-topic for Stack Overflow. Closed 4 years ago . Is there an open-source implementation in any programming language to detect running handwriting in English and convert them to text ? 回答1: there is Ocropus 来源： https://stackoverflow.com/questions/4130650/opensource-for-detecting-running-handwriting

问题 I am fairly interested in my website visitor's Chrome extensions, and what they do ( outgoing network communication, file saving, storage, etc. ) Is there any possibility to detect these? 回答1: No. That would be a nasty invasion of privacy. The closest you could come to detecting an extension would be to examine the DOM and JS environment of your page and see if the browser modified it in ways you didn't expect … but that would be a massively broad problem to solve, so you could only

问题 I know how to track down an IP address, but I need to track down the MAC address of the users viewing my page. How to accomplish this? 回答1: Unless the user is on the same LAN as the webserver, you cannot do this. MAC addresses are on the ethernet layer below TCP/IP, and are not included in TCP/IP packets routed off the users local network. In some environments, it might be possible use to a client-side plugin to allow Javascript access to the MAC address, and transmit that information to the

问题 I am looking to emulate hyperterminal functionality for my Serial Communication in C# by detecting the keypresses of certain key combinations (escape sequences) which cannot be typed out such as Ctrl+C, Ctrl+Z, etc. I understand that these keys have their ASCII equivalents and can be transmitted as such. But I am facing problems with the detection of multiple keypresses. Some of my code is provided as a reference : private void Transmitted_KeyDown(object sender, KeyEventArgs e) { if (e

问题 Applications like iPhone Explorer can show the contents for each installed iPhone application on Mac OS X (even on non-jailbroken devices) when iPhone is connected using USB-cable. I'm trying to do something similar, programmatically copy some files from my iPhone app's folder. I have done some experiments with open-source frameworks/products built to use iTunes-framework, like iPhoneBrowser and MobileDevice Library. I can connect to iPhone, now the problem is how to enumerate Apps folder

问题 I did qr code with Zxing, Right now I can read data but what I want is : Example: Be able read type of QR Code is wifi, VCard, Calendar, url, etc... if detect QR Code is wifi so I be able code to change wifi setting key, So, how do i know that data read from QR code is wifi? 回答1: QR Code itself does not specify any types. Its plain text. It can be an HTTP URL or a custom URL. (e.g. it should have "type://wifi" inside it. You can then use it to see what the type is). But off-the-shelf, there

问题 Now iOS devices has 0~2 cameras. How to detect them? 回答1: You iterate through the video devices... NSArray *videoDevices = [AVCaptureDevice devicesWithMediaType:AVMediaTypeVideo]; AVCaptureDevice *captureDevice = nil; for (AVCaptureDevice *device in videoDevices) { if (device.position == AVCaptureDevicePositionFront) { //FRONT-FACING CAMERA EXISTS } } Of course you could also do this a bit quicker with a predicate, but i'll leave that for you to work out ;).... (HINT: use the

问题 I am working on a project which requires detection of people in a scene. Initially after running the HOG detector on the original frames a particular background object was being detected as a person on all the frames, giving me 3021 false positive detections. So I took the logical step to remove the static background by applying a background subtracter (BackgroundSubtractorMOG2) to all the frames. The resulting frames looked like this: Then these mask images were added (using bitwise_and) to

问题 How to detect user's click on the link inside the iframe using JavaScript? 回答1: You are able to check iframe load event onLoad="alert(this.contentWindow.location);" or on jquery: $('iframe#yourId').load(function() { alert("the iframe has been loaded"); }); 回答2: Assuming you have an iframe with ID "myIframe", and the iframe comes from the same domain as the main document, the following will detect a click anywhere in the document. This will also work when the document is editable, which using