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How can I determine if a JavaScript variable is defined in a page? [duplicate]
...f a variable is defined in a page? Suppose I want to check if a variable named "x" is defined in a page, if I do if(x != null) , it gives me an error.
...
node.js, Error: Cannot find module 'express'
...first web application. I got stuck on my very first sample code and need some help to get it running. Before I post this question, I did search on stack overflow, found some similar questions but still could not fix it.
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How to get HttpClient to pass credentials along with the request?
...
I was also having this same problem. I developed a synchronous solution thanks to the research done by @tpeczek in the following SO article: Unable to authenticate to ASP.NET Web Api service with HttpClient
My solution uses a WebClient, which as you...
How to upgrade Git on Windows to the latest version?
...2.14.2 and 2.16.1, the command was
C:\> git update
(It was later renamed to avoid confusion with updating the local repository, e.g. like svn update does it.)
That command does not exist in Git 2.13 and before.
If this errors with "is not a git command" then either you don't actually have Gi...
How to stop mysqld
...emons/org.macports.mysql.plist
Note: this is persistent after reboot.
Homebrew
launchctl unload -w ~/Library/LaunchAgents/homebrew.mxcl.mysql.plist
launchctl load -w ~/Library/LaunchAgents/homebrew.mxcl.mysql.plist
Binary installer
sudo /Library/StartupItems/MySQLCOM/MySQLCOM stop
sudo /Libra...
Way to go from recursion to iteration
... years of programming to solve simple problems, but I'm fully aware that sometimes you need iteration due to memory/speed problems.
...
Can you find all classes in a package using reflection?
...ered remotely, you will not be able to discover those classes.
The normal method is instead to somewhere register the classes you need access to in a file, or reference them in a different class. Or just use convention when it comes to naming.
Addendum: The Reflections Library will allow you to lo...
jQuery Validate Plugin - Trigger validation of single field
...ally be pre-populated via facebook connect. Once a user connects, their name and email are automatically filled in. The problem is that this doesn't trigger the remote validation to check if the email already exists.
...
Django “xxxxxx Object” display customization in admin action sidebar
...he default behavior of how the admin recent changes sidebar displays the name of "objects" added. Refer to the picture below:
...
Check if a user has scrolled to the bottom
...oll(function() {
if($(window).scrollTop() + $(window).height() == $(document).height()) {
alert("bottom!");
}
});
You can test it here, this takes the top scroll of the window, so how much it's scrolled down, adds the height of the visible window and checks if that equals the height o...