No-Library (pure JS), HTML, CSS, JavaScript
http://angularjs.org/
AngularJS 1.0.3, HTML, CSS, JavaScript
Demonstrating a function for calculating the intersection of two lines, and determining whether the intersection point is on either line segment.
jQuery 2.0, HTML, CSS, JavaScript
Mootools 1.4.0, HTML, CSS, JavaScript
The getScreenCTM-Method on an SVGSVGElement doesn't take the viewBox of the element into account - opposed to what all other browser vendors do. This is a major problem when translationg screen coordinate system to (nested) svg coordinate systems.