31 lines
945 B
JavaScript
31 lines
945 B
JavaScript
window.startup = function() {
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var tex = document.getElementsByClassName("tex");
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Array.prototype.forEach.call(tex, function(el) {
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katex.render(el.getAttribute("data-expr"), el);
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});
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var demoInput = document.getElementById("demo-input");
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var demoOutput = document.getElementById("demo-output");
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function doDemo() {
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try {
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katex.render("\\displaystyle{" + demoInput.value + "}", demoOutput);
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} catch(err) {
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while(demoOutput.lastChild) {
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demoOutput.removeChild(demoOutput.lastChild);
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}
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var msg = document.createTextNode(err.message);
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var span = document.createElement("span");
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span.appendChild(msg);
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demoOutput.appendChild(span);
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span.setAttribute("class", "errorMessage");
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}
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}
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demoInput.addEventListener("input", function() {
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doDemo();
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});
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doDemo();
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};
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