This example shows how to use the tex-chtml component to process a complete HTML page containing TeX notation into math using the CommonHTML format.
The key lines are
<script>
MathJax = {
tex: {inlineMath: [['$', '$'], ['\\(', '\\)']]}
};
</script>
<script id="MathJax-script" async src="https://cdn.jsdelivr.net/npm/mathjax@3/es5/tex-chtml.js"></script>
which configures the TeX input jax to include single dollar signs as in-line math delimiters, and then loads the tex-chtml component. The rest is handled by MathJax automatically.