## \usetikzlibrary in tikzjax

I am using TikZjax and want to do something fancy that needs additional library. So in LaTeX, we can do:

\usepackage{tikz} \usetikzlibrary{calc} \begin{document} \begin{tikzpicture} % my picture here \end{tikzpicture} \end{document} 

but in TikZjax, I do not know how to add the \usetikzlibrary{} line. I tried in the HTML code:

<script type="text/tikz"> \usetikzlibrary{calc} \begin{tikzpicture} % my picture here \end{tikzpicture} </script> 

also

<script type="text/tikz"> \begin{tikzpicture} \usetikzlibrary{calc} % my picture here \end{tikzpicture} </script> 

but both not successful. Opening up the browser console will find that TikZ emits error just like I didn’t have the \usetikzlibrary{} line.

So my question is: (1) is it possible to \usetikzlibrary? (2) if so, how?