MathJax inside SVG

Question

I\'m doing some writing where I use MathJax to render the math. I also occasionally include SVG diagrams which are generated dynamically by javascript. Those SVG diagrams occasi

Answer 1

I've used the following, which defines a function that takes latex code as input and appends the MathJax processed svg to a target SVG element.

// First create a new element to hold the initial Latex code
// and eventual MathJax generated SVG. This element isn't added
// to the main docuemnt, so it's never seen.
let mathBuffer = document.createElement("div");

// Then define a function that takes LaTeX source code
// and places the resulting generated SVG in a target SVG element.
mathSVG = function (latex, target) {
  // Update the buffer with the source latex.
  mathBuffer.textContent = latex;
  // Get MathJax to process and typeset.
  MathJax.Hub.Queue(["Typeset", MathJax.Hub, mathBuffer]);
  // Queue a callback function that will execute once it's finished typesetting.
  MathJax.Hub.Queue(function () {
    // This (svg) is the generated graphics.
    const svg = mathBuffer.childNodes[1].childNodes[0];
    // The next line is optional, play with positioning as you see fit.
    svg.setAttribute("y", "-11pt");
    // Move the generated svg from the buffer to the target element.
    target.appendChild(svg);
    // Clear the buffer.
    mathBuffer.textContent = "";
  });
};

In the above, I'm assuming an html host document with svg elements within. It should also work in a svg host document too.