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How do I implement basic “Long Polling”?

...chance of returning an error 404 (to show error handling in the coming Javascript example) msgsrv.php <?php if(rand(1,3) == 1){ /* Fake an error */ header("HTTP/1.0 404 Not Found"); die(); } /* Send a string after a random number of seconds (2-10) */ sleep(rand(2,10)); echo("Hi! Ha...
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How to execute a Python script from the Django shell?

I need to execute a Python script from the Django shell. I tried: 21 Answers 21 ...
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How to launch jQuery Fancybox on page load?

...to a hidden anchor tag and fire the click event of that anchor tag via JavaScript, but I would rather just launch the Fancybox directly and avoid the extra anchor tag. ...
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JavaScript equivalent of PHP’s die

Is there something like "die" in JavaScript? I've tried with "break", but doesn't work :) 14 Answers ...
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How to add facebook share button on my website?

... You can do this by using asynchronous Javascript SDK provided by facebook Have a look at the following code FB Javascript SDK initialization <div id="fb-root"></div> <script> window.fbAsyncInit = function() { FB.init({appId: 'YOUR APP ID', status...
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Should I write script in the body or the head of the html? [duplicate]

...s actually, the some of which actually render in the body. Place library script such as the jQuery library in the head section. Place normal script in the head unless it becomes a performance/page load issue. Place script associated with includes, within and at the end of that include. One exampl...
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Are Javascript arrays sparse?

... How exactly JavaScript arrays are implemented differs from browser to browser, but they generally fall back to a sparse implementation - most likely the same one used for property access of regular objects - if using an actual array would be...
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XMLHttpRequest Origin null is not allowed Access-Control-Allow-Origin for file:/// to file:/// (Serv

...le-access-from-files would not fix the issue. I am simply trying to load a script file like so $.getScript("application.js"); and get the error described in the question. – Denzo Jul 25 '12 at 4:17 ...
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Safari 3rd party cookie iframe trick no longer working?

...ard tricks to get 3rd party cookies in Safari was as follows: use some javascript to POST to a hidden iframe. It (used to) trick Safari into thinking that the user had interacted with the 3rd party content and so then allow cookies to be set. ...
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How do I hide an element on a click event anywhere outside of the element?

...t</p> <input type="file" /> </div> <script src="jquery.js" type="text/javascript"></script> <script type="text/javascript"> var box = $('#box'); var link = $('#link'); link.click(function() { box.show(); ...