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How to validate an email address in JavaScript

...Using regular expressions is probably the best way. You can see a bunch of tests here (taken from chromium) function validateEmail(email) { const re = /^(([^<>()\[\]\\.,;:\s@"]+(\.[^<>()\[\]\\.,;:\s@"]+)*)|(".+"))@((\[[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\])|(([a-zA-Z\-0-9]...
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How do I get the opposite (negation) of a Boolean in Python?

...on 2) you can customize the truth value and thus the result of not: class Test(object): def __init__(self, value): self._value = value def __bool__(self): print('__bool__ called on {!r}'.format(self)) return bool(self._value) __nonzero__ = __bool__ # Python 2 ...
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What is the fastest method for selecting descendant elements in jQuery?

...parent').filter('.child') respectively. So method 3 will always be the fastest because it needs to do the least amount of work and uses the most direct method to get first-level children. Based on Anurag's revised speed tests here: http://jsfiddle.net/QLV9y/1/ Speed test: (More is Better) On Chr...
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Test if number is odd or even

... This would definitely be the fastest way when using integers in a language like C, by a large margin. Has anyone done benchmarks to determine if this is true also for PHP? – thomasrutter Dec 5 '13 at 0:03 ...
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How to allow only numeric (0-9) in HTML inputbox using jQuery?

...ion() { $("#myTextBox").inputFilter(function(value) { return /^\d*$/.test(value); // Allow digits only, using a RegExp }); }); See the JSFiddle demo for more input filter examples. Also note that you still must do server side validation! Pure JavaScript (without jQuery) jQuery isn't a...
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Enable IIS7 gzip

How can I enable IIS7 to gzip static files like js and css and how can I test if IIS7 is really gziping them before sending to the client? ...
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How do I immediately execute an anonymous function in PHP?

...onal features in addition to doing what run does. You can try a quick loop test (e.g.) to see which is faster on your engine. – Pacerier Sep 3 '15 at 4:33 ...
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ASP.NET MVC Performance

... We haven't performed the type of scalability and perf tests necessary to come up with any conclusions. I think ScottGu may have been discussing potential perf targets. As we move towards Beta and RTM, we will internally be doing more perf testing. However, I'm not sure what our ...
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How to find out if a Python object is a string?

... Python 2 Use isinstance(obj, basestring) for an object-to-test obj. Docs. share | improve this answer | follow | ...
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How to iterate over array of objects in Handlebars?

... {username: "alan1", firstName: "Alan", lastName: "Johnson", email: "alan1@test.com" }, {username: "alan2", firstName: "Alan", lastName: "Johnson", email: "alan2@test.com" } ] }; Finally attach the json to content holder: $("#small-content-placeholder").html(sm...