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Matching an empty input box using CSS
...: 1px solid red; /* Red border only if the input is empty */
}
More info and browser support: https://css-tricks.com/almanac/selectors/p/placeholder-shown/
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jQuery hasClass() - check for more than one class
... ... um, but I just ran this in jsperf for Chrome 21.0.1180 and the is() method is now about 20% faster. But the hasClass() seems more readable.
– Danyal Aytekin
Sep 27 '12 at 12:27
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Wrong requestCode in onActivityResult
... Just a note: if you use startActivityForResult in a fragment and expect the result from onActivityResult in that fragment, just make sure you call super.onActivityResult in the host activity (in case you override that method there). This is because the activity's onActivityResult seems...
Get battery level and state in Android
How can I get battery level and state (plugged in, discharging, charging, etc)? I researched the developer docs and I found a BatteryManager class. But it doesn't contain any methods, just constants. How do I even use it?
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how to read all files inside particular folder
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@user001 because usually the IDE can find and add such things for you - just press ctrl+.
– Marc Gravell♦
Nov 30 '15 at 15:58
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How do I preview emails in Rails?
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@andres Pretty sure that's by design--you don't want users to preview your mail on production servers, it's meant only for local development.
– mpowered
Jan 24 '15 at 5:45
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Set Background cell color in PHPExcel
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Your functions it's ok, but you are using global, and that's a real error... You should make use of the PHP5 features. Instead, you could try a lambda function such as eval.in/39136 :)
– Cito
Jul 26 '13 at 15:06
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Resizing SVG in html?
So, I have an SVG file in HTML, and one of the things I've heard about the format is that it doesn't get all pixelated when you zoom in on it.
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Calling a function every 60 seconds
...nction, delay)
That fires the function passed in as first parameter over and over.
A better approach is, to use setTimeout along with a self-executing anonymous function:
(function(){
// do some stuff
setTimeout(arguments.callee, 60000);
})();
that guarantees, that the next call is not...
Prevent Default on Form Submit jQuery
...alid variable to true or false? Can you recreate your code in jsfiddle.net and send the link? Try adding an alert() to confirm that the function is firing. Some people have reported that adding e.stopPropagation(); after e.preventDefault(); stops other chained events from firing.
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