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Long-lasting FB access-token for server to pull FB page info

...m to send email notifications (to subscribers) when they publish bus delay alerts and school closure alerts. A lot of people in the community follow the organization on their Facebook page, and that's the only place they look for those alerts. So an employee of the organization has to manually publi...
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How do I replace a character at a particular index in JavaScript?

...replacement.length); } And use it like this: var hello = "Hello World"; alert(hello.replaceAt(2, "!!")); // Should display He!!o World share | improve this answer | follo...
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How is a non-breaking space represented in a JavaScript string?

...f (p.text() == String.fromCharCode(160) && p.text() == '\xA0') alert('Character 160'); Shows an alert, as the ASCII equivalent of the markup is returned instead. share | improve this a...
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Javascript: How to detect if browser window is scrolled to bottom?

...erHeight + window.pageYOffset) >= document.body.offsetHeight) { alert("you're at the bottom of the page"); } }; The problem with the current accepted answer is that window.scrollY is not available in IE. Here is a quote from mdn regarding scrollY: For cross-browser compatibility, us...
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Repeat String - Javascript

... This problem is a well-known / "classic" optimization issue for JavaScript, caused by the fact that JavaScript strings are "immutable" and addition by concatenation of even a single character to a string requires creation of, including memory allocation for and copying to, an entire new strin...
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How can I detect if a browser is blocking a popup?

... try { popup_window.focus(); } catch (e) { alert("Pop-up Blocker is enabled! Please add this site to your exception list."); } } share | improve this answer ...
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Handling an empty UITableView. Print a friendly message

... func emptyDataSetDidTapButton(scrollView: UIScrollView!) { let ac = UIAlertController(title: "Button tapped!", message: nil, preferredStyle: .Alert) ac.addAction(UIAlertAction(title: "Hurray", style: .Default, handler: nil)) presentViewController(ac, animated: true, completion: nil) } ...
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HTTPS connections over proxy servers

... Won't work w/o lots of alert to end user. "unconditionally trusted by the client" - there's no such thing. Even is the cert is perfect-AAA+++, it still shows different domain not matching to what end user asked for, which will make any sane browser...
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What is the difference between call and apply?

.../ This also has the unintentional side effect of adding a value to window: alert(window.value); // Alerts NaN Even though obj.addValues and f refer to the same function, they behave differently when called because the value of the receiver is different in each call. For this reason, when calling a...
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JQuery - find a radio button by value

...he HTML: <fieldset> <input type="radio" name="UI_opt" value="alerter" checked> Alerter<br/> <input type="radio" name="UI_opt" value="printer"> Printer<br/> <input type="radio" name="UI_opt" value="consoler"> Consoler<br/> </fieldset> the...