detect | 易学教程

How can I detect 'any' ajax request being completed using jQuery?

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I have a page where I can insert some javascript / jquery to manipulate the output. I don't have any other control over the page markup etc. I need to add an extra element via jquery after each present on the page. The issue is that the elements are generated via an asynchronous call on the existing page which occurs after $(document).ready is complete. Essentially, I need a way of calling my jquery after the page has loaded and the subsequent ajax calls have completed. Is there a way to detect the completion of any ajax call on the page and then call my own custom function to insert the

Get iPhone's camera resolution?

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问题 Is there any way to get the resolution of the iPhone's camera? Apparently the 3G has 1200x1600, and 3GS has 1500x2000, but how do I obtain these values from inside my code (without taking the picture). I need them to make some affine transform to the camera preview. I could detect if it's 3G or 3GS to hardcode these values, but it's just the last resort. 回答1: I think your "last resort" is a good solution. What's wrong with detecting the model? The hardware isn't going to change for either of

Detect element if over another element via using CSS3 Transform

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Any easy way to detect element if its over another element ? I'm using CSS3 transform to move a element. ( because ) Example : - All element size 10x10 pixels Element#A transform : translate(170px, 180px) <-- This element can controll for moving Element#B transform : translate(200px, 200px) How to detect is element#A over some element ? My full demo with jQuery element controller : http://jsfiddle.net/ndZj5/ var over = false; // do something with `over` to `true` to detect this... if(!over) { my.css('transform','translate('+x+'px,'+y+'px)'); } Take a tour on my demo , press keyboard arrows to

Is there any way to have PHP detect a corrupted image?

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问题 Is there any way to have PHP determine whether an image file is corrupted and will not be able to display properly? I've tried to check with fopen and check whether the URL is valid, but it hasn't worked! 回答1: Javascript solution (with involving jQuery, though this should be possible to do without it too): <script type='text/javascript'> $(function(){ var files = [ 'warning-large.png', 'warning-large-corrupted.png', 'http://www.example.com/none.gif', 'http://sstatic.net/stackoverflow/img

Selenium Webdriver is detectable

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I read everywhere that it is not possible for websites to detect that a user is using a selenium webdriver... but why? For example the webdriver plugin in firefox adds an 'webdriver attribute' to the <html> element. So the <html>... goes to <html webdriver="true">... I am confused... why it is not possible to detect the webdriver? I wrote a little Javascript to get the document.outerHTML... and there is the webdriver attribute! = detected!? Here is my code I tested in Browser with Webdriver and without: <html> <head> <script type="text/javascript"> <!-- function showWindow(){ javascript:(alert

Android fingerprint detect new finger added

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How to detect if the user add new fingerprint to Android settings after he/she authenticate finger inside my application ? i.e. iOS have something called (evaluatedPolicyDomainState) to detect changes in fingerprint catalog what is the alternative in Android ? This require for security reasons to prompt password in this case From the documentation for setUserAuthenticationRequired : The key will become irreversibly invalidated once the secure lock screen is disabled (reconfigured to None, Swipe or other mode which does not authenticate the user) or when the secure lock screen is forcibly reset

How to AutoDetect/Use IE proxy settings in .net HttpWebRequest

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问题 Is it possible to detect/reuse those settings ? How ? The exception i'm getting is This is the exception while connecting to http://www.google.com System.Net.WebException: Unable to connect to the remote server ---> System.Net.Sockets.SocketException: A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond 66.102.1.99:80 at System.Net.Sockets.Socket.DoConnect(EndPoint

Java: File Renaming Detection

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Is there a way to detect file renaming using Java? (NIO's WatchService API or any other) From what I've seen when renaming a file two separate events occur - ENTRY_DELETE and then ENTRY_CREATE. Take a look at jpathwatch . In addition to the standard watch event kinds specified in Java 7 ( ENTRY_CREATE, ENTRY_DELETE, ENTRY_MODIFY ) it also has additional events called ENTRY_RENAME_FROM and ENTRY_RENAME_TO which will fire when a file is renamed. Note that this depends on whether the underlying operating system supports file renaming events or not. Detecting renaming of files can not be done

How to detect mobile browser using jQuery or in some other SIMPLE way..? [duplicate]

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问题 Possible Duplicate: best way to detect handheld device in jQuery I want to make a mobile version of my web app. How I can run a function that will detect if a request is being made from a desktop or mobile browser? This is so that if the user is requesting from a mobile browser and they click on a link, rather than go to the actual page, it should get hijacked and do some other event.. Thanks in advance.. 回答1: There are a few scripts on Detect Mobile Browser that redirect mobile visitors on

Detecting autocomplete on form input with jQuery

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问题 I have a form that detects if all the text-fields are valid on each keyup() and focus(); if they're all valid, it will enable the submit button for the user to press. However, if the user fills in one of the text inputs with a browsers autocomplete feature, it prevents the submit button from being enabled. Is there a way to detect if any of the input has changed regardless of how it's been changed, using jQuery? 回答1: The jQuery change event will only fire on blur. The keyup event will fire as