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How can I get the button that caused the submit from the form submit event?

...hat this element was clicked:", $btn); /* access $btn.attr("name") and $btn.val() for data */ } }); I take advantage of the fact, that the button is always the focused element after clicking it. This will not work, if you do a blur() right after the click. @Doin has spotted another dr...
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jQuery empty() vs remove()

What's the difference between empty() and remove() methods in jQuery , and when we call any of these methods, the objects being created will be destroyed and memory released? ...
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How to declare std::unique_ptr and what is the use of it?

I try to understand how std::unique_ptr works and for that I found this document. The author starts from the following example: ...
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How to send an email from JavaScript

...st@example.com'); There are also some parameters to pre-fill the subject and the body: window.open('mailto:test@example.com?subject=subject&body=body'); Another solution would be to do an ajax call to your server, so that the server sends the email. Be careful not to allow anyone to send ...
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How do I return rows with a specific value first?

...turn the rows of the table where a column contains a specific value first, and then return the rest of the rows alphabetized. ...
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Force add despite the .gitignore file

... Well, I tested it to make sure it really works and it does. Can you describe your environemnt (OS, git version ...)? This is what I've basically done: echo "/foo" >> .gitignore; echo "bar" > foo; git add foo # should throw an error; git add -p foo # works (cannot...
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What is the (function() { } )() construct in JavaScript?

...es immediately after it’s created. It has nothing to do with any event-handler for any events (such as document.onload). Consider the part within the first pair of parentheses: (function(){})();....it is a regular function expression. Then look at the last pair (function(){})();, this is normally...
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Unwanted padding around an ImageView

... finally! <ImageView (...) android:adjustViewBounds="true" /> the adjustViewbounds attribute did the trick: Set this to true if you want the ImageView to adjust its bounds to preserve the aspect ratio of its drawable. i stumbled upon it here...
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Install an apk file from command prompt?

I want to install a file using the Windows command line. First I want to build after compiling all the .jar files to create an .apk file for an Android application without using Eclipse. ...
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How do I update devDependencies in NPM?

...he local modules, run npm update --save-dev Alternatively, the same command to save time npm update -D You can view the full detail of update, or any command for that matter through npm help <cmd> share ...