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How to validate an email address in JavaScript

...return false; } $("#validate").on("click", validate); <script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script> <form> <p>Enter an email address:</p> <input id='email'> <button type='submit' id='validate'>Valid...
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How do I access the host machine from the guest machine? [closed]

... the following: ./manage.py runserver [default-gateway-IP]:8000 because https://docs.djangoproject.com/en/dev/ref/django-admin/ Note that the default IP address, 127.0.0.1, is not accessible from other machines on your network. To make your development server viewable to other machines on the ne...
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HttpClient not supporting PostAsJsonAsync method C#

...o add an assembly reference in your csproj: System.Web.Extensions.dll See https://code.msdn.microsoft.com/windowsapps/How-to-use-HttpClient-to-b9289836 share | improve this answer | ...
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How to send a JSON object over Request with Android?

...m.out.println(response); } }); To send JSON (credit to `voidberg' at https://github.com/loopj/android-async-http/issues/125): // params is a JSONObject StringEntity se = null; try { se = new StringEntity(params.toString()); } catch (UnsupportedEncodingException e) { // handle exceptio...
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How to request Google to re-crawl my website? [closed]

...that Mike Flynn commented about. Here are detailed instructions: Go to: https://www.google.com/webmasters/tools/ and log in If you haven't already, add and verify the site with the "Add a Site" button Click on the site name for the one you want to manage Click Crawl -> Fetch as Google Optional...
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How to split a string at the first `/` (slash) and surround part of it in a ``?

...[0] + "</span></br>" + arr[1]+"/"+arr[2]); <script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script> <div id="date">23/05/2013</div> Fiddle When you split this string ---> 23/05/2013 on / var myString = "23/05/2013";...
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Facebook Android Generate Key Hash

...th your own package name ( package name in Manifest.xml). Official link - https://developers.facebook.com/docs/android/login-with-facebook/ ( See the bottom of the page) OLD ANSWER (Generating Keyhash using openssl ) to generate signature you need openssl installed on your pc. If you don’t hav...
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bind event only once

...bj).unbind('click.namespace').bind('click.namespace', function() { }); } https://api.jquery.com/event.namespace/ share | improve this answer | follow | ...
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Installing R with Homebrew

...l gcc through brew, and you will not have to waste time compiling gcc. See https://stackoverflow.com/a/24967219/2668545 for more details. After that, you can simply do brew tap homebrew/science brew install Caskroom/cask/xquartz brew install r ...
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Center image using text-align center?

...<div style="border: 1px solid black;"> <img class="center" src ="https://cdn.sstatic.net/Sites/stackoverflow/company/img/logos/so/so-icon.png?v=c78bd457575a"> </div> share | ...