robots.txt Rerouting on Development Servers
Every website should have a robots.txt file. Some bots hit sites so often that they slow down performance, other bots simply aren't desirable. robots.txt files can also be used to communicate sitemap location and limit request rate. It's important that the correct robots.txt file is served on development servers though, and that file is usually much different than your production robots.txt file. Here's a quick .htaccess snippet you can use to make that happen:
RewriteCond %{HTTP_HOST} devdomain
RewriteRule ^robots.txt$ robots-go-away.txt [L]
The robots-go-away.txt file most likely directs robots not to index anything, unless you want your dev server to be indexed for some reason (hint: you really don't want this).
![CSS Animations Between Media Queries]()
CSS animations are right up there with sliced bread. CSS animations are efficient because they can be hardware accelerated, they require no JavaScript overhead, and they are composed of very little CSS code. Quite often we add CSS transforms to elements via CSS during...
![Conquering Impostor Syndrome]()
Two years ago I documented my struggles with Imposter Syndrome and the response was immense. I received messages of support and commiseration from new web developers, veteran engineers, and even persons of all experience levels in other professions. I've even caught myself reading the post...
![HTML5 Placeholder Styling with CSS]()
Last week I showed you how you could style selected text with CSS. I've searched for more interesting CSS style properties and found another: INPUT placeholder styling. Let me show you how to style placeholder text within INPUTelements with some unique CSS code.
The CSS
Firefox...
![Resize an Image Using Canvas, Drag and Drop and the File API]()
Recently I was asked to create a user interface that allows someone to upload an image
to a server (among other things) so that it could be used in the various web sites my
company provides to its clients. Normally this would be an easy task—create a...
Here’s an example showing how to include multiple development domains:
RewriteCond %{HTTP_HOST} ^localhost [OR] RewriteCond %{HTTP_HOST} ^example.dev [OR] RewriteCond %{HTTP_HOST} ^test.example.com [OR] RewriteCond %{HTTP_HOST} ^staging.example.com RewriteRule ^robots.txt$ robots-disallow.txt [L]use vagrant