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How do I check if an element is hidden in jQuery?
Is it possible to toggle the visibility of an element, using the functions .hide() , .show() or .toggle() ?
59 Answers
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Declaring Multiple Variables in JavaScript
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The first way is easier to maintain. Each declaration is a single statement on a single line, so you can easily add, remove, and reorder the declarations.
With the second way, it is annoying to remove the first or last declaration because they start from the var keyword and finish with the semic...
Difference between \b and \B in regex
I am reading a book on regular expression and I came across this example for \b :
9 Answers
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How to check that an object is empty in PHP?
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The typecasting doesn't work for me, because I get the error: PHP Parse error: syntax error, unexpected '(array)' (array) (T_ARRAY_CAST) in ... I use PHP version 5.4.28 and the first option with two lines of code works for me.
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Fast and responsive interactive charts/graphs: SVG, Canvas, other?
...enders thousands of points in a zoomable, pannable graph. The current implementation, using Protovis, is underperformant. Check it out here:
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Can someone explain the right way to use SBT?
...off the closet on this! I don't understand SBT. There, I said it, now help me please.
4 Answers
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Why are const parameters not allowed in C#?
... looks strange especially for C++ developers. In C++ we used to mark a parameter as const in order to be sure that its state will not be changed in the method. There are also other C++ specific reasons, like passing const ref in order to pass by ref and be sure that state will not be changed. Bu...
What is the maximum length of a valid email address?
...defined as
Path = "<" [ A-d-l ":" ] Mailbox ">"
So the Mailbox element (i.e., the email address) has angle brackets around it to form a Path, which a maximum length of 254 characters to restrict the Path length to 256 characters or fewer.
The maximum length specified in RFC 5321 states:
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How to get POSTed JSON in Flask?
...'m trying to build a simple API using Flask, in which I now want to read some POSTed JSON. I do the POST with the Postman Chrome extension, and the JSON I POST is simply {"text":"lalala"} . I try to read the JSON using the following method:
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How can I unit test a GUI?
...lly I've had mixed experiences with trying to move logic out of the UI - sometimes it's worked very well, and at other times it's been more trouble than it's worth. It's somewhat outside my area of expertise though.
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