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How to check if a string is a valid JSON string in JavaScript without using Try/Catch
...st check a JSON string using a regexp, and it will work in most cases, not all cases.
Have a look around the line 450 in https://github.com/douglascrockford/JSON-js/blob/master/json2.js
There is a regexp that check for a valid JSON, something like:
if (/^[\],:{}\s]*$/.test(text.replace(/\\["\\\/b...
postgres: upgrade a user to be a superuser?
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@masterweily You can do \du to list all users/roles.
– XåpplI'-I0llwlg'I -
Apr 6 '14 at 23:38
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How to get a file or blob from an object URL?
I am allowing the user to load images into a page via drag&drop and other methods. When an image is dropped, I'm using URL.createObjectURL to convert to an object URL to display the image. I am not revoking the url, as I do reuse it.
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Inner join vs Where
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I really do wish to see if there are any official documentation from Oracle saying about this
– 4 Leave Cover
Sep 6 '16 at 11:31
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How do I link a JavaScript file to a HTML file?
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Thank you SO MUCH. This is exactly the answer that I finally figured out! I know that the question was elementary but I thank you for taking the time to show me this! What I was missing was placing the jQuery library before the javascript file!
– firstofth3...
Bootstrap Carousel : Remove auto slide
I'm using Bootstrap Carousel. All I want is that the slider will only slide when a navigation or a pagination is clicked.
I've tried removing
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Auto start node.js server on boot
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This isn't something to configure in node.js at all, this is purely OS responsibility (Windows in your case). The most reliable way to achieve this is through a Windows Service.
There's this super easy module that installs a node script as a windows service, it's called n...
Easiest way to detect Internet connection on iOS?
... connection to the specific host is routable. That doesn't mean you're actually able to connect. Example: you connect your iPhone's wifi to your camera's wifi. Wifi is connected with a default gateway: all hosts will report reachable. But they are actually not -- the camera is a dead-end connection....
Change templates in Xcode
... don't modify anything under the /Developer hierarchy (or wherever you installed your developer tools).
Instead, clone the templates you want to have customized variants of. Then change their names and the information in them. Finally, put them in the appropriate location in your account's Librar...
How do I run two commands in one line in Windows CMD?
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Like this on all Microsoft OSes since 2000, and still good today:
dir & echo foo
If you want the second command to execute only if the first exited successfully:
dir && echo foo
The single ampersand (&) syntax to exe...