When comparing Maker.js vs p5.js, the Slant community recommends p5.js for most people. In the question“What are the best JavaScript drawing libraries?” p5.js is ranked 2nd while Maker.js is ranked 23rd. The most important reason people chose p5.js is:
Reference documentation and lots of examples are available directly on the [website](http://p5js.org/).
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Pros
Pro Accurate to at least .001 and beyond in most cases
Most drawing libraries are built for screens / pixels, which only need to be accurate to one decimal place (half a pixel). Maker.js is built for very accurate CAD drawings.
Pro Nested model for drawings to require other drawings
Pro Output formats for CNC and laser cutters
Pro Accessible documentation
Reference documentation and lots of examples are available directly on the website.
Pro Great community
p5 users benefit from the Processing community's 15+ years of growth and discovery. Processing code can easily be converted to p5.
Pro General programming concepts
As a continuation of the Processing project, this frameworks helps in understanding the general programming concepts that goes beyond drawing (connecting electronics, using sounds or the webcam etc),
Pro Easiest to learn to obtain high grade results
In a few days any body can understand extremely complex figures in a few minutes.
Pro A lot of YouTube tutorials
Cons
Con No built-in rendering
If looking for something to build UIs with or similar, one might be disappointed by the lack of any pre-defined UI element objects and such in p5.js. One has to write all the rendering code for any objects one includes, integrating it appropriately with the loop.