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Is there a “null coalescing” operator in JavaScript?
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Maven2 property that indicates the parent directory
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answered Jun 19 '09 at 18:34
ClayClay
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Why does C# disallow readonly local variables?
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Trigger a button click with JavaScript on the Enter key in a text box
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Automatic Retina images for web sites
...http://caniuse.com/#search=srcset
Other Resources:
WebKit release post
W3C documentation for srcset
good explanation about why and how to use srcset
Chris Coyer's post for more good info
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Collections.emptyMap() vs new HashMap()
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From Effective Java, Item #43 - "Return empty arrays or collections, not null" demonstrates returning an empty collection and perhaps even demonstrates using these emptyList(), emptySet(), and emptyMap() methods on the Collections class to get an empty ...
For loop for HTMLCollection elements
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Working demo (in Chrome and Firefox): http://jsfiddle.net/jfriend00/3ddpz8sp/
Third Update for ES6 in Dec 2017
As of Dec. 2017, this capability works in Edge 41.16299.15.0 for a nodeList as in document.querySelectorAll(), but not an HTMLCollection as in document.getElementsByClassName() so ...
Why do we need private subnet in VPC?
... like downloading software updates, or accessing other AWS resources like S31 and SQS -- if the default route on its VPC subnet is the Internet Gateway object. So, if you are an instance on a "public" subnet, then you need a public IP address in order to do a significant number of things that serve...