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When to use os.name, sys.platform, or platform.system?
...
Dived a bit into the source code.
The output of sys.platform and os.name are determined at compile time. platform.system() determines the system type at run time.
sys.platform is specified as a compiler define during the build configuration.
os.name checks whether certain os specific mod...
How to extract the hostname portion of a URL in JavaScript
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Use document.location object and its host or hostname properties.
alert(document.location.hostname); // alerts "stackoverflow.com"
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How to get screen width without (minus) scrollbar?
..., html').css('overflow', 'visible');
var screenWidth2 = $(window).width();
alert(screenWidth1); // Gives the screenwith without scrollbar
alert(screenWidth2); // Gives the screenwith including scrollbar
You can get the screen width by with and without scroll bar by using this code.
Here, I have ch...
Creating a jQuery object from a big HTML-string
...eHTML('<div><input type="text" value="val" /></div>'));
alert( dom_nodes.find('input').val() );
DEMO
var string = '<div><input type="text" value="val" /></div>';
$('<div/>').html(string).contents();
DEMO
What's happening in this code:
$('<div/>')...
javac not working in windows command prompt
... the solutions here: http://techdem.centerkey.com/2009/05/javahome-command-script.html
These are much more robust to change -- like when you upgrade the JDK or JRE, since there is no hard coded path.
The quick solution (if you don't want to read the blog) is
C:\>for /d %i in ("\Program Files\J...
Capturing Groups From a Grep RegEx
I've got this little script in sh (Mac OSX 10.6) to look through an array of files. Google has stopped being helpful at this point:
...
How to communicate between iframe and the parent site?
...ame:
window.onmessage = function(e){
if (e.data == 'hello') {
alert('It works!');
}
};
If you are posting message from iframe to parent window
window.top.postMessage('hello', '*')
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What is the exact meaning of IFS=$'\n'?
... can be
found in the Bash documentation.found
I guess it's forcing the script to escape the line feed to the proper ANSI-C standard.
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What is an OS kernel ? How does it differ from an operating system? [closed]
...System while for a programmer the Linux kernel itself is a perfectly valid OS depending on what you're trying to achieve. For instance embedded systems are mostly just kernel with very small number of specialized processes running on top of them. In that case the kernel itself becomes the OS itself....
When is JavaScript synchronous?
I have been under the impression for that JavaScript was always asynchronous. However, I have learned that there are situations where it is not (ie DOM manipulations). Is there a good reference anywhere about when it will be synchronous and when it will be asynchronous? Does jQuery affect this at...