LaTeX is a programming language used primarily for creating high quality academic written documents, slideshows and posters. LaTeX questions are often a better fit for the sister site TeX - LaTeX (https://tex.stackexchange.com). This includes questions on tools and other languages producing LaTeX code. The JavaScript libraries MathJax and KaTeX are off-topic on TeX - LaTeX and should be asked on Stack Overflow instead (and tagged accordingly).
