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jQuery hide element while preserving its space in page layout
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Instead of hide(), use:
css('visibility','hidden')
hide() sets the display style to none, which completely removes the element from the document flow and causes it to not take up space.
visibility:hidden keeps the space as it is.
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what exactly is device pixel ratio?
...device pixel ratios, you should use CSS Media Queries to provide different sets of resources for different groups of devices. Combine this with nice tricks like background-size: cover or explicitly set the background-size to percentage values.
Example
#element { background-image: url('lores.png');...
Check if value is in select list with JQuery
...elect-box option[value='+thevalue+']').length;
If the option's value was set via Javascript, that will not work. In this case we can do the following:
var exists = false;
$('#select-box option').each(function(){
if (this.value == 'bar') {
exists = true;
return false;
}
});...
How do I create ColorStateList programmatically?
...tr.html#state_above_anchor for a list of available states.
If you want to set colors for disabled, unfocused, unchecked states etc. just negate the states:
int[][] states = new int[][] {
new int[] { android.R.attr.state_enabled}, // enabled
new int[] {-android.R.attr.state_enabled}, // dis...
JPA : How to convert a native query result set to POJO class collection
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JPA provides an SqlResultSetMapping that allows you to map whatever returns from your native query into an Entity or a custom class.
EDIT JPA 1.0 does not allow mapping to non-entity classes. Only in JPA 2.1 a ConstructorResult has been added to map...
What are the ways to make an html link open a folder
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make sure your folder permissions are set so that a directory listing is allowed then just point your anchor to that folder using chmod 701 (that might be risky though)
for example
<a href="./downloads/folder_i_want_to_display/" >Go to downloads page</a...
What does git push -u mean?
...e will be pulling from, e.g. your GitHub repo. The -u option automatically sets that upstream for you, linking your repo to a central one. That way, in the future, Git "knows" where you want to push to and where you want to pull from, so you can use git pull or git push without arguments. A little b...
Automatic creation date for Django model form objects?
What's the best way to set a creation date for an object automatically, and also a field that will record when the object was last updated?
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What does -XX:MaxPermSize do?
...arguments.
Update : Starting with Java 8, both the permgen space and this setting are gone. The memory model used for loaded classes and methods is different and isn't limited (with default settings). You should not see this error any more.
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How to properly handle a gzipped page when using curl?
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curl will automatically decompress the response if you set the --compressed flag:
curl --compressed "http://example.com"
--compressed
(HTTP) Request a compressed response using one of the algorithms libcurl supports, and save the uncompressed document. If this option ...