Get Redirect URL with cURL
URL redirects can be glorious or annoying depending on which side of them you are on and which side you want to be on. Redirects are helpful for vanity URLs (useful in advertising) but sometimes they're annoying in that they could potentially break your code if you encounter a redirect you weren't anticipating.
The useful and amazing cURL command line utility allows you to fetch an address and return its final destination URL:
# "/css" doesn't exist but WordPress tries to find the closest match
# and then redirects to it ("/css-animation-callback")
curl -Ls -w %{url_effective} -o /dev/null https://davidwalsh.name/css
# Outputs: https://davidwalsh.name/css-animation-callback
The url_effective variable is what we're after. The L directive tells cURL to follow redirects, the s directive tells cURL to be silent (i.e. not output the page contents). You provide the URL, cURL follows it to its endpoint -- easy!
![Create a CSS Flipping Animation]()
CSS animations are a lot of fun; the beauty of them is that through many simple properties, you can create anything from an elegant fade in to a WTF-Pixar-would-be-proud effect. One CSS effect somewhere in between is the CSS flip effect, whereby there's...
![Animated 3D Flipping Menu with CSS]()
CSS animations aren't just for basic fades or sliding elements anymore -- CSS animations are capable of much more. I've showed you how you can create an exploding logo (applied with JavaScript, but all animation is CSS), an animated Photo Stack, a sweet...
![MooTools PulseFade Plugin]()
I was recently driven to create a MooTools plugin that would take an element and fade it to a min from a max for a given number of times. Here's the result of my Moo-foolery.
The MooTools JavaScript
Options of the class include:
min: (defaults to .5) the...
![Build a Slick and Simple MooTools Accordion]()
Last week I covered a smooth, subtle MooTools effect called Kwicks. Another great MooTools creation is the Accordion, which acts like...wait for it...an accordion! Now I've never been a huge Weird Al fan so this is as close to playing an accordion as...
Follow a URL using JavaScript: https://www.npmjs.com/package/linkfollower