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Check if array is empty or null
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As long as your selector is actually working, I see nothing wrong with your code that checks the length of the array. That should do what you want. There are a lot of ways to clean up your code to be simpler and more readable. Here's a cleaned up version...
What is the “double tilde” (~~) operator in JavaScript? [duplicate]
... @ghoppe: Worth noting that it differs from .floor() in that it actually just removes anything to the right of the decimal. This makes a difference when used against a negative number. Also, it will always return a number, and will never give you NaN. If it can't be converted to a number, you...
How to insert a line break before an element using CSS
...lements. They simply won't go onto the next line. Only solution was to actually append an empty <div></div> in the HTML.
– Adam Reis
Jun 10 '16 at 2:25
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sendmail: how to configure sendmail on ubuntu? [closed]
...guration are located at the following (in case you want to update them manually):
/etc/mail/sendmail.conf
/etc/cron.d/sendmail
/etc/mail/sendmail.mc
You can test sendmail to see if it is properly configured and setup by typing the following into the command line:
$ echo "My test email being sent...
Thread.Sleep replacement in .NET for Windows Store
...continue 30 seconds later, but the thread will not be blocked, just as for all await expressions.
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facebook: permanent Page Access Token?
...ook pages as one of its data sources. It imports some data from it periodically with no GUI involved. Then we use a web app to show the data we already have.
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Executing Shell Scripts from the OS X Dock?
...ng the command, exiting after it completes.
The benefit to this is it's really simple to do, and you can very easily get user input (say, selecting a bunch of files), then pass it to the input of the shell script (either to stdin, or as arguments).
(Automator is in your /Applications folder!)
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Javascript Thousand Separator / string format [duplicate]
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Really Really Appreciate It // But How Can i Convert that string (with commas) to a number ?
– LostLord
Sep 20 '10 at 16:51
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Get string character by index - Java
...???????????";
Iterate of chars
The first solution is a simple loop over all char of the string:
/* 1 */
System.out.println(
"\n\nUsing char iterator (do not work for surrogate pairs !)");
for (int pos = 0; pos < str.length(); ++pos) {
char c = str.charAt(pos);
System.out.print...
How to uncheck checkbox using jQuery Uniform library
...oken. Here's an updated fiddle. If you mean that it'll have issues specifically in 1.6, then that's probably true since jQuery changed then reverted behavior of .attr(). Using 1.6 or higher, you should really be using .prop().
– user113716
Aug 25 '11 at 16:42
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