CSS :out-of-range
One aspect of web development I've always loathed was working with forms. Form elements have been traditionally difficult to style due to OS and browser differences, and validation can be a nightmare. Luckily the native HTML APIs added methods for improving the form validation situation.
With input[type=number]
elements, you can add min
and max
attributes. Those attributes are great but the browser doesn't display distinct error styles if those numbers are out of range. Luckily we have :out-of-range
:
/* matches when number is not within min and max */
input[type=number]:out-of-range {
border-color: red;
}
Thanks to CSS :out-of-range
, developers can style input
elements based on its valid value status. Despite the HTML validation and styling, you must still do server side validation; honestly, you probably also want to do JavaScript validation here too.
![Send Text Messages with PHP]()
Kids these days, I tell ya. All they care about is the technology. The video games. The bottled water. Oh, and the texting, always the texting. Back in my day, all we had was...OK, I had all of these things too. But I still don't get...
![Detect DOM Node Insertions with JavaScript and CSS Animations]()
I work with an awesome cast of developers at Mozilla, and one of them in Daniel Buchner. Daniel's shared with me an awesome strategy for detecting when nodes have been injected into a parent node without using the deprecated DOM Events API.
![Introducing MooTools Templated]()
One major problem with creating UI components with the MooTools JavaScript framework is that there isn't a great way of allowing customization of template and ease of node creation. As of today, there are two ways of creating:
new Element Madness
The first way to create UI-driven...
![Create a Context Menu with Dojo and Dijit]()
Context menus, used in the right type of web application, can be invaluable. They provide shortcut methods to different functionality within the application and, with just a right click, they are readily available. Dojo's Dijit frameworks provides an easy way to create stylish, flexible context...
What would be a use-case for this rather than using :invalid ?