The HTML5 is widely used to display high quality graphics in web applications. However, the combination of web, GUI, and visual techniques that are required to build applications, together with the lack of testing and debugging tools, makes developing such applications very challenging. To help direct future research on testing applications, in this paper we present a taxonomy of bugs. First, we extracted 2,403 -related bug reports from 123 open source GitHub projects that use the HTML5 .

more »

... , we constructed our taxonomy by manually classifying a statistically representative random sample of 332 bug reports. Our manual classification identified five broad categories of bugs, such as Visual and Performance bugs. We found that Visual bugs are the most frequent (35%), while Performance bugs are relatively infrequent (5%). We also found that many bugs that present themselves visually on the are actually caused by other components of the web application. Our taxonomy of bugs can be used to steer future research into bugs and testing.