Created
March 30, 2018 12:55
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a11y-headers
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| javascript: (function () { | |
| var css = `#e404h_overlay {position:fixed; bottom:0; width:80%; max-height:200px; overflow:auto; padding:15px;}.e404h_i:hover {background: rgba(255,0,0,.2); cursor:pointer;}.e404h_i.e404h_hidden {opacity:.2; cursor:not-allowed;}.e404h_i.e404h_hidden::after {content:' [hidden]';}.e404h_h1 {font-size: 30px; line-height: 1.1;}.e404h_h2 {font-size: 25px; line-height: 1.1;}.e404h_h3 {font-size: 20px; line-height: 1.2;}.e404h_h4 {font-size: 17px; line-height: 1.3;}.e404h_h5 {font-size: 14px; line-height: 1.3;}.e404h_h6 {font-size: 11px; line-height: 1.3;}.e404h_hlight {box-shadow: 0 0 3px 1px #f00;}`; | |
| var html = ''; | |
| var headings = document.querySelectorAll('h1,h2,h3,h4,h5,h6'); | |
| var heads = []; | |
| for (var i = 0; i < headings.length; i++) { | |
| heads.push({ | |
| tag: headings[i].tagName.toLowerCase(), | |
| text: headings[i].textContent.trim(), | |
| elem: headings[i] | |
| }); | |
| } | |
| heads.forEach((h, i) => { | |
| let hidden = h.elem.offsetParent ? '' : ' e404h_hidden'; | |
| html += `<div class="e404h_i e404h_${h.tag}${hidden}" data-i="${i}">${h.tag}: ${h.text}</div>` | |
| }); | |
| var wrap = document.getElementById('e404h_overlay'); | |
| if (wrap) { | |
| wrap.outherHTML = ''; | |
| } else { | |
| var style = document.createElement('style'); | |
| style.id = 'e404h_style'; | |
| style.innerHTML = css; | |
| document.body.appendChild(style); | |
| } | |
| wrap = document.createElement('dialog'); | |
| wrap.id = 'e404h_overlay'; | |
| wrap.innerHTML = html; | |
| document.body.appendChild(wrap); | |
| wrap.showModal(); | |
| wrap.addEventListener('click', function (e) { | |
| if (e.target.classList.contains('e404h_i')) { | |
| var ind = e.target.getAttribute('data-i') * 1; | |
| var el = heads[ind].elem; | |
| console.log(el); | |
| if (e.target.classList.contains('e404h_hidden')) { | |
| return; | |
| } | |
| var dy = el.getBoundingClientRect().y; | |
| window.scroll(0, window.pageYOffset + dy - 100); | |
| el.classList.add('e404h_hlight'); | |
| setTimeout(() => { | |
| el.classList.remove('e404h_hlight') | |
| }, 1000) | |
| } else if (e.target.nodeName === 'DIALOG') { | |
| this.close(); | |
| } | |
| }); | |
| })() |
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