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How to update Ruby to 1.9.x on Mac?
...sion Manager) is the Standard for upgrading your Ruby installation on OSX: https://rvm.io
To get started, open a Terminal Window and issue the following command:
\curl -L https://get.rvm.io | bash -s stable --ruby
( you will need to trust the RVM Dev Team that the command is not malicious - if ...
Play an audio file using jQuery when a button is clicked
... = document.createElement('audio');
audioElement.setAttribute('src', 'http://www.soundjay.com/misc/sounds/bell-ringing-01.mp3');
audioElement.addEventListener('ended', function() {
this.play();
}, false);
audioElement.addEventListener("canplay",function(){
...
How do you read CSS rule values with JavaScript?
...is:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
<head>
<style>
div#a { }
div#b, div#c { }
</style>
&...
PHP Sort Array By SubArray Value
...
Use arsort instead of asort if you want from high to low.
Code credit: http://www.firsttube.com/read/sorting-a-multi-dimensional-array-with-php/
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PostgreSQL array_agg order
...
If you are on a PostgreSQL version < 9.0 then:
From: http://www.postgresql.org/docs/8.4/static/functions-aggregate.html
In the current implementation, the order of the input is in principle unspecified. Supplying the input values from a sorted subquery will usually work, ho...
phpmyadmin logs out after 1440 secs
...allow a ridiculously long session timeout for all your PHP sites.
source: http://www.sitekickr.com/blog/increase-phpmyadmin-timeout/
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How to Replace dot (.) in a string in Java
...xpath.replaceAll("\\.", "/*/"); //replaces a literal . with /*/
http://docs.oracle.com/javase/7/docs/api/java/lang/String.html#replaceAll(java.lang.String,%20java.lang.String)
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How do I auto-hide placeholder text upon focus using css or jquery?
...$(this).attr('placeholder', $(this).data('holder'));
});
});
Test: http://jsfiddle.net/mPLFf/4/
-EDIT-
Actually, since placeholder should be used to describe the value, not the name of the input. I suggest the following alternative
html:
<label class="overlabel">
<span>F...
How to simulate a mouse click using JavaScript?
...rties you want to give it */
});
targetElement.dispatchEvent(evt);
Demo: http://jsfiddle.net/DerekL/932wyok6/
This works on all modern browsers. For old browsers including IE, MouseEvent.initMouseEvent will have to be used unfortunately though it's deprecated.
var evt = document.createEvent("Mo...
D3.js: what is 'g' in .append(“g”) D3.js code?
...phical drawings such
as ones you would do in a powerpoint presentation.
http://tutorials.jenkov.com/svg/g-element.html
As pointed in above link: to translate you need to use translate(x,y):
The <g>-element doesn't have x and y attributes. To move the contents
of a <g>-element y...