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Is there a standard function to check for null, undefined, or blank variables in JavaScript?

...ull || value === undefined), you forgot/don't know how Javascript coerces. webreflection.blogspot.nl/2010/10/… – Christiaan Westerbeek Jul 3 '14 at 11:46 ...
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Not receiving Google OAuth refresh token

...amp;access_type=offline to the OAuth redirect (see Google's OAuth 2.0 for Web Server Applications page). This will prompt the user to authorize the application again and will always return a refresh_token. share |...
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Rails 4 image-path, image-url and asset-url no longer work in SCSS files

...tation guides.rubyonrails.org/asset_pipeline.html. Also can you see in the Web Developer Debug of your browser if the images are being loaded? – H.Rabiee Nov 28 '13 at 9:24 ...
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Using reCAPTCHA on localhost

I'm developing a website using PHP and I want to make a human verification in one of the sessions. For the development, I'm initially running the system locally and when it is ready, I'm gonna make put it on in a certain domain. ...
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Input placeholders for Internet Explorer

... In looking at the "Web Forms : input placeholder" section of HTML5 Cross Browser Polyfills, one I saw was jQuery-html5-placeholder. I tried the demo out with IE9, and it looks like it wraps your <input> with a span and overlays a label w...
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How to go to a specific file in Chrome Developer Tools?

I am developing a web application with a heavy front-end approach. By using Dojo and the AMD-way, I currently have testing screens which may easily load over a hundred different javascript files. ...
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How do I create and read a value from cookie?

...the section under "Library" on this page: developer.mozilla.org/en-US/docs/Web/API/document/… - you can save it to a file and include it or paste it into an existing js file where you'd like to use it. – Brendan Nee Aug 21 '15 at 6:24 ...
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How to install node.js as windows service?

...new Service({ name:'Hello World', description: 'The nodejs.org example web server.', script: 'C:\\path\\to\\helloworld.js' }); // Listen for the "install" event, which indicates the // process is available as a service. svc.on('install',function(){ svc.start(); }); svc.install(); FD: I'm...
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Replacement for “rename” in dplyr

... It is not listed as a function in dplyr (yet): http://cran.rstudio.org/web/packages/dplyr/dplyr.pdf The function below works (almost) the same if you don't want to load both plyr and dplyr rename <- function(dat, oldnames, newnames) { datnames <- colnames(dat) datnames[which(datnames...
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Fix a Git detached head?

...de when you checked out the individual version. – adswebwork Mar 20 '14 at 15:43 10 @adswebwork: ...