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JavaScript for…in vs for
...hen using this function.
Example:
$(['a','b','c']).each(function() {
alert(this);
});
//Outputs "a" then "b" then "c"
The downside of using this is that if you're doing some non UI logic, your functions will be less portable to other frameworks. The each() function is probably best reserved ...
Difference between return and exit in Bash functions
...as nothing to do with exit codes. Exit codes are intended for applications/scripts, not functions. So in this regard, the only keyword that sets the exit code of the script (the one that can be caught by the calling program using the $? shell variable) is exit.
EDIT 2:
My last statement referring ...
Bootstrap Dropdown menu is not working
...
Maybe try with
<script src="//ajax.googleapis.com/ajax/libs/jquery/1.11.0/jquery.min.js"></script>
<script src="//netdna.bootstrapcdn.com/bootstrap/3.1.1/js/bootstrap.min.js"></script>
<link rel="stylesheet" type="tex...
How to check for an undefined or null variable in JavaScript?
...quality will also return true for undefined.
if (window.variable == null) alert('variable is null or undefined');
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sys.argv[1] meaning in script
...t in the meantime, here are a few things to know.
You can simply create a script that prints the arguments as they're represented. It also prints the number of arguments, using the len function on the list.
from __future__ import print_function
import sys
print(sys.argv, len(sys.argv))
The scrip...
How do I know the script file name in a Bash script?
How can I determine the name of the Bash script file inside the script itself?
23 Answers
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How to detect if a script is being sourced
I have a script where I do not want it to call exit if it's being sourced.
17 Answers
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Unit Testing bash scripts
We have a system that has some bash scripts running besides Java code. Since we are trying to Test Everything That Could Possibly Break, and those bash scripts may break, we want to test them.
...
How can I backup a remote SQL Server database to a local drive?
...ht-click on the database you wish to backup and click Tasks -> Generate Scripts.
This pops open a wizard where you can set the following in order to perform a decent backup of your database, even on a remote server:
Select the database you wish to backup and hit next,
In the options it present...
Determining whether jQuery has not found any element
...e { /* code if not found */ }
You're getting an object returned from that alert because jQuery (almost) always returns the "jQuery object" when you use it, which is a wrapper for the elements jQuery's found that permits method chaining.
...