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How to swap two variables in JavaScript
...t also seems to be much slower using an array instead of a third variable: http://jsperf.com/swap-array-vs-variable I only tested this in Chrome though. I wasn't able to test ECMAScript 6 version yet as it currently gives a Invalid left-hand side in assignment error.
– Nope
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How do I hide javascript code in a webpage?
...script file that is included with:
<script type="text/javascript" src="http://mydomain.com/xxxx.js"></script>
tags, then the javascript code won't be immediately visible with the View Source command - only the script tag itself will be visible that way. That doesn't mean that someone...
JavaScript chop/slice/trim off last character in string
... In case anybody is wondering, substring is 11% faster than slice. jsperf.com/js-slice-vs-substring-test
– BenR
Apr 16 '14 at 15:53
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Automatic Retina images for web sites
...
<img src="low-res.jpg" srcset="high-res.jpg 2x">
Browser Support: 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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Is null check needed before calling instanceof?
...f x is null.
From the Java Language Specification, section 15.20.2, "Type comparison operator instanceof":
"At run time, the result of the
instanceof operator is true if the
value of the RelationalExpression is
not null and the reference could be
cast to the ReferenceType
without rai...
libevent+protobuf轻松搭建tcpserver - C/C++ - 清泛网 - 专注C/C++及内核技术
... }
}
3. protobuf作为client与server之间的数据传输协议详见：http://code.google.com/apis/protocolbuffers/ libevent protobuf tcpserver
How to write a cron that will run a script every day at midnight?
...eUploader: {
brandingHtml: "Powered by \u003ca href=\"https://imgur.com/\"\u003e\u003csvg class=\"svg-icon\" width=\"50\" height=\"18\" viewBox=\"0 0 50 18\" fill=\"none\" xmlns=\"http://www.w3.org/2000/svg\"\u003e\u003cpath d=\"M46.1709 9.17788C46.1709 8.26454 46.2665 7.94324 4...
Detect IF hovering over element with jQuery
...r isHovered = $('#elem').is(":hover"); // returns true or false
Example: http://jsfiddle.net/Meligy/2kyaJ/3/
(This only works when the selector matches ONE element max. See Edit 3 for more)
.
Edit 1 (June 29, 2013): (Applicable to jQuery 1.9.x only, as it works with 1.10+, see next Edit 2)
Thi...
How to check Oracle database for long running queries
...n, which uses an Oracle database, is going slow or appears to have stopped completely.
8 Answers
...
Phonegap Cordova installation Windows
... Windows Machine.
Follow these steps
Download and Install node.js from http://nodejs.org/
Run the command npm install -g phonegap (in case of phonegap installation) or run the command npm install -g cordova (in case of Cordova installation).
As the installation gets completed you can notice this...