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javascript set a variable if undefined
...efined. It would therefore not only match undefined but also null, false, 0, NaN, "" (but not "0").
If you want to set to default only if the variable is strictly undefined then the safest way is to write:
var x = (typeof x === 'undefined') ? your_default_value : x;
On newer browsers it's actu...
CSS/HTML: Create a glowing border around an Input Field
...der:focus {
outline: none;
border-color: #9ecaed;
box-shadow: 0 0 10px #9ecaed;
}
Live demo: http://jsfiddle.net/simevidas/CXUpm/1/show/
(to view the code for the demo, remove "show/" from the URL)
label {
display:block;
margin:20px;
width:420px;
overflow:au...
How to create your own library for Android development to be used in every program you write?
...
answered Nov 3 '10 at 8:52
Denis PalnitskyDenis Palnitsky
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In which situations do we need to write the __autoreleasing ownership qualifier under ARC?
...
edited Nov 22 '13 at 22:50
Imre Kelényi
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answer...
How to create a new file together with missing parent directories?
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answered Jun 22 '10 at 6:32
Jon SkeetJon Skeet
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Is it bad practice to have a constructor function return a Promise?
...
202
Yes, it is a bad practise. A constructor should return an instance of its class, nothing else. ...
Java: Class.this
... |
edited Jul 25 at 14:40
Rarblack
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answered Ap...
Determine if a function exists in bash
...
answered Sep 17 '08 at 18:00
JBBJBB
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Difference between git pull and git pull --rebase
...
mvpmvp
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14
...
Convert seconds to HH-MM-SS with JavaScript?
...
--update 2
Please use @Frank's a one line solution:
new Date(SECONDS * 1000).toISOString().substr(11, 8)
It is by far the best solution.
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