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How do I check if file exists in jQuery or pure JavaScript?
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With jQuery:
$.ajax({
url:'http://www.example.com/somefile.ext',
type:'HEAD',
error: function()
{
//file not exists
},
success: function()
{
//file exists
}
});
EDIT:
Here is the code for checking 404 status, without using jQuery
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img tag displays wrong orientation
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I found part of the solution. Images now have metadata that specify the orientation of the photo. There is a new CSS spec for image-orientation.
Just add this to your CSS:
img {
image-orientation: from-image;
}
According to the spec as of Jan 25 2016, Firefox and...
How to terminate a Python script
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import sys
sys.exit()
details from the sys module documentation:
sys.exit([arg])
Exit from Python. This is implemented by raising the
SystemExit exception, so cleanup actions specified by finally clauses
of try statements are honored, and it is possible to intercept the
exit...
Is there Selected Tab Changed Event in the standard WPF Tab Control
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Amazon S3 direct file upload from client browser - private key disclosure
I'm implementing a direct file upload from client machine to Amazon S3 via REST API using only JavaScript, without any server-side code. All works fine but one thing is worrying me...
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How to theme the ENTIRE Xcode IDE to light-on-dark?
On OSX, MacVim and Terminal can both be themed to be light-on-dark.
Xcode 3.2 allow the same customization for its editor using color schemes.
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Check if value exists in Postgres array
...s 9.0, I need a way to test if a value exists in a given array. So far I came up with something like this:
7 Answers
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Ruby Gem install Json fails on Mavericks and Xcode 5.1 - unknown argument: '-multiply_definedsuppres
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I am encountering the exact same problem after updating Xcode to 5.1 and news from Apple aren't good. From Xcode 5.1 Release Notes:
The Apple LLVM compiler in Xcode 5.1 treats unrecognized command-line options as errors. This issue has been seen when bu...
Non-alphanumeric list order from os.listdir()
...ently, I have noticed that the default order of the lists has changed to something almost nonsensical. For example, if I am in a current directory containing the following subdirectories: run01, run02, ... run19, run20, and then I generate a list from the following command:
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Is there a reason that Swift array assignment is inconsistent (neither a reference nor a deep copy)?
I'm reading the documentation and I am constantly shaking my head at some of the design decisions of the language. But the thing that really got me puzzled is how arrays are handled.
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