56 lines
1.8 KiB
JavaScript
56 lines
1.8 KiB
JavaScript
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(function(document) {
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function updateOutline() {
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var arrAllHeader = document.querySelectorAll("h1,h2,h3,h4,h5,h6");
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var arrOutline = ['<ul>'];
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var header, headerText;
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var id = 0;
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var level = 0,
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lastLevel = 1;
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var levelCount = 0;
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for (var i = 0, c = arrAllHeader.length; i < c; i++) {
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header = arrAllHeader[i];
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headerText = header.innerText;
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header.setAttribute('id', id);
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level = header.tagName.match(/^h(\d)$/i)[1];
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levelCount = level - lastLevel;
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if (levelCount > 0) {
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for (var j = 0; j < levelCount; j++) {
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arrOutline.push('<ul>');
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}
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} else if (levelCount < 0) {
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levelCount *= -1;
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for (var j = 0; j < levelCount; j++) {
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arrOutline.push('</ul>');
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}
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};
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arrOutline.push('<li>');
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arrOutline.push('<a href="#' + id + '">' + headerText + '</a>');
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arrOutline.push('</li>');
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lastLevel = level;
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id++;
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}
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arrOutline.push('</ul>')
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var outline = document.getElementById('markdown-outline');
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if(arrOutline.length > 2){
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outline.innerHTML = arrOutline.join('');
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showOutline();
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}
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else outline.style.display = 'none';
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}
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function showOutline() {
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var outline = document.getElementById('markdown-outline');
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var markdownContainer = document.getElementById('markdown-container');
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outline.style.left = markdownContainer.offsetLeft + markdownContainer.offsetWidth + 10 + 'px';
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outline.style.maxHeight = document.body.clientHeight - 30;
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outline.style.display = 'block';
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}
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updateOutline();
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}(document));
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