percy-github

By David Walsh on May 1, 2019

Recent Features

By David WalshNovember 2, 2015
JavaScript Promise API
While synchronous code is easier to follow and debug, async is generally better for performance and flexibility. Why "hold up the show" when you can trigger numerous requests at once and then handle them when each is ready? Promises are becoming a big part of the JavaScript world...
By David WalshApril 15, 2015
fetch API
One of the worst kept secrets about AJAX on the web is that the underlying API for it, XMLHttpRequest, wasn't really made for what we've been using it for. We've done well to create elegant APIs around XHR but we know we can do better. Our effort to...

By David WalshJune 17, 2009
Adding Events to Adding Events in jQuery
Earlier this week I posted a usability tip about using CSS and MooTools' custom event functionality to automatically add the "pointer" cursor when an element gets a "click" event attached to it. I received numerous requests for a jQuery version and I think I've...
By David WalshAugust 16, 2012
CSS Tooltips
We all know that you can make shapes with CSS and a single HTML element, as I've covered in my CSS Triangles and CSS Circles posts. Triangles and circles are fairly simply though, so as CSS advances, we need to stretch the boundaries...