61 lines
1.3 KiB
JavaScript
61 lines
1.3 KiB
JavaScript
const inputEl = document.querySelector('[data-el="input"]');
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const highlightEl = document.querySelector('[data-el="highlight"]');
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const outputEl = document.querySelector('[data-el="output"]');
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const converter = new showdown.Converter({
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metadata: true,
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parseImgDimensions: true,
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strikethrough: true,
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tables: true,
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ghCodeBlocks: true,
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smoothLivePreview: true,
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simpleLineBreaks: true,
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emoji: true,
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});
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const resizeTextarea = (textArea) => {
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if (!textArea) {
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return;
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}
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window.requestAnimationFrame(() => {
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textArea.style.height = 0;
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if (textArea.scrollHeight > 0) {
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textArea.style.height = `${textArea.scrollHeight + 2}px`;
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}
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});
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};
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const highlight = () => {
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window.requestAnimationFrame(() => {
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const highlighted = hljs.highlight(
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"markdown",
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inputEl.value
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).value;
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highlightEl.innerHTML = highlighted;
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});
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};
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const updateReadonly = () => {
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window.requestAnimationFrame(() => {
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const htmlContent = converter.makeHtml(inputEl.value);
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outputEl.innerHTML = htmlContent;
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});
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};
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const init = () => {
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inputEl.addEventListener("input", () => {
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resizeTextarea(inputEl);
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highlight();
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updateReadonly();
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});
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inputEl.setAttribute('data-initialized', true);
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}
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document.addEventListener("DOMContentLoaded", () => {
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init();
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resizeTextarea(inputEl);
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highlight();
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updateReadonly();
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}) |