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Hparson math rendering fixes #1104

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Hparson math rendering fixes #1104

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423478c
Hparson: fix math rendering detection
ascholerChemeketa Jan 2, 2026
4f3fa1d
Hparson: attempt to handle timing issues for math rendering
ascholerChemeketa Jan 2, 2026
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11 changes: 7 additions & 4 deletions bases/rsptx/interactives/runestone/hparsons/js/hparsons.js
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Original file line number Diff line number Diff line change
Expand Up @@ -27,7 +27,7 @@ export default class HParsons extends RunestoneBase {
this.isBlockGrading = this.parseBooleanAttribute(orig, "data-blockanswer");
this.language = orig.getAttribute("data-language");
// Detect math mode
if (this.language === undefined && orig.textContent.includes('span class="process-math"')) {
if (this.language == null && orig.textContent.includes('span class="process-math"')) {
this.language = "math";
}
if (this.isBlockGrading) {
Expand Down Expand Up @@ -131,7 +131,7 @@ export default class HParsons extends RunestoneBase {
this.hparsonsInput = this.outerDiv.querySelector("micro-parsons");
this.renderMathInBlocks();
// Change "code" to "answer" in parsons direction for non-code languages
if (this.language === undefined || this.language === "math") {
if (this.language == null || this.language === "math") {
this.outerDiv.querySelectorAll(".hparsons-tip").forEach(el => {
if (el.textContent.includes("our code")) {
el.textContent = el.textContent.replace("our code", "our answer");
Expand Down Expand Up @@ -195,9 +195,12 @@ export default class HParsons extends RunestoneBase {
});

if (window.MathJax && MathJax.typesetPromise) {
MathJax.typesetPromise().then(() => this.simulateSolution());
MathJax.typesetPromise([blocks]).then(() => this.simulateSolution());
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@bnmnetp bnmnetp Jan 2, 2026

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I wonder if we shouldn't somehow be using this.queueMathJax(myElement) as we do in other components to ensure that we are serializing all of the various requests to mathjaxify the math.

Not 100% sure how we would know they are all done other than to check that the queue is empty and has been empty for some small period of time.

}
}, 0);
}, 100);
// Ugly... but there are timing issues with block rendering in microparsons and MathJax
// most noticeable if multiple hparsons problems are on the same page
// this delay seems to help avoid issues
}

/*
Expand Down