suzanne.soy/scribble-math
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Show katex errors in HTML output if rendering fails

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This commit is contained in:
Martin von Gagern 2017-01-15 17:47:02 +01:00
parent cd74447a2a
commit d3402bcd30
2 changed files with 16 additions and 1 deletions
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4
main.css
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@ -206,3 +206,7 @@ body {
.credits a { .credits a {
color: white; color: white;
} }
.errorMessage {
color: red;
}

13
main.js
View File

@ -8,7 +8,18 @@ window.startup = function() {
var demoOutput = document.getElementById("demo-output"); var demoOutput = document.getElementById("demo-output");
function doDemo() { function doDemo() {
katex.render("\\displaystyle{" + demoInput.value + "}", demoOutput); try {
katex.render("\\displaystyle{" + demoInput.value + "}", demoOutput);
} catch(err) {
while(demoOutput.lastChild) {
demoOutput.removeChild(demoOutput.lastChild);
}
var msg = document.createTextNode(err.message);
var span = document.createElement("span");
span.appendChild(msg);
demoOutput.appendChild(span);
span.setAttribute("class", "errorMessage");
}
} }
demoInput.addEventListener("input", function() { demoInput.addEventListener("input", function() {