Original upload date: Wed, 11 Jun 2014 00:00:00 GMT
Archive date: Sun, 28 Nov 2021 09:27:59 GMT
Even something as simple as a dropdown menu or a bar graph can introduce usability problems. From a slide out menu disappearing when a user's mouse moves a few pixels too far, to requiring NASA-like l
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evels of precision to mouse over the right element, there are algorithms already implemented in Javascript to help us overcome these problems. If an algorithm is defined as "a step-by-step procedure for calculations", let's visually break down those steps for 2 different non-trivial algorithms and explore how these algorithms are applied to some standard & everyday user interface patterns. We'll first look at an algorithm for predicting a user's intentions by calculating mouse speed and direction, and then tackle determining hit state for hundreds of non-uniformed, variably sized and placed UI elements.
Slides: http://markmarkoh.com/jsconf2014
http://2014.jsconf.us/
