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Detect Chrome extension first run / update

How can an extension find out that it is being run for the first time or has just been updated, so that the extension can perform some specific actions? (e.g. open a help page or update settings) ...
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Check if an element is a child of a parent

... If you are only interested in the direct parent, and not other ancestors, you can just use parent(), and give it the selector, as in target.parent('div#hello'). Example: http://jsfiddle.net/6BX9n/ function fun(evt) { var tar...
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JS: Check if date is less than 1 hour ago?

Is there a way to check if a date is less than 1 hour ago? 7 Answers 7 ...
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Streaming a video file to an html5 video player with Node.js so that the video controls continue to

...ile to an html5 video player with Node.js so that the video controls continue to work? 2 Answers ...
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What is the difference between Class Path and Build Path

I'm confused with these two terms. 6 Answers 6 ...
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Convert.ChangeType() fails on Nullable Types

I want to convert a string to an object property value, whose name I have as a string. I am trying to do this like so: 6 An...
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arrayfun can be significantly slower than an explicit loop in matlab. Why?

Consider the following simple speed test for arrayfun : 2 Answers 2 ...
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What is the difference between named and positional parameters in Dart?

Dart supports both named optional parameters and positional optional parameters. What are the differences between the two? ...
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Difference between len() and .__len__()?

... len is a function to get the length of a collection. It works by calling an object's __len__ method. __something__ attributes are special and usually more than meets the eye, and generally should not be called directly. It was decided...
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what is the unsigned datatype?

I've seen this unsigned "typeless" type used a couple of times, but never seen an explanation for it. I suppose there's a corresponding signed type. Here's an example: ...