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How do I check if an HTML element is empty using jQuery?
...empty')){
//do something
}
for more info see http://api.jquery.com/is/ and http://api.jquery.com/empty-selector/
EDIT:
As some have pointed, the browser interpretation of an empty element can vary. If you would like to ignore invisible elements such as spaces and line breaks and make the imple...
Print number of keys in Redis
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You can issue the INFO command, which returns information and statistics about the server. See here for an example output.
As mentioned in the comments by mVChr, you can use info keyspace directly on the redis-cli.
redis> INFO
# Server
redis_version...
How to check status of PostgreSQL server Mac OS X
...e simplest way to to check running processes:
ps auxwww | grep postgres
And look for a command that looks something like this (your version may not be 8.3):
/Library/PostgreSQL/8.3/bin/postgres -D /Library/PostgreSQL/8.3/data
To start the server, execute something like this:
/Library/PostgreS...
Make a link use POST instead of GET
... was wondering if anyone knows how to make a hyperlink pass some variables and use POST (like a form) as opposed to GET.
11...
Is there a quick way to delete a file from a Jar / war without having to extract the jar and recreat
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I more often have p7zip installed instead of zip and in this case it's important to specify file format: 7z d -tzip file.jar dir/unwanted_file.txt
– lapo
Jul 31 '13 at 10:02
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Get first day of week in PHP?
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but, it means the start and the end of 'this week', right?
– Oki Erie Rinaldi
Aug 7 '15 at 6:59
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Difference between angle bracket < > and double quotes “ ” while including header files in C++? [dup
What is the difference between angle bracket < > and double quotes " " while including header files in C++?
2 Ans...
What's the difference between URI.escape and CGI.escape?
What's the difference between URI.escape and CGI.escape and which one should I use?
7 Answers
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How to execute maven plugin execution directly from command line?
I have a plugin (antrun) with an execution configured which has an id and is not bound to any phase. Can I execute this execution directly from the command line?
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How to have jQuery restrict file types on upload?
...would like to have jQuery limit a file upload field to only jpg/jpeg, png, and gif. I am doing backend checking with PHP already. I am running my submit button through a JavaScript function already so I really just need to know how to check for the file types before submit or alert.
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