ref: master
public/javascripts/tinymce/tests/coverage/js/reporter.js
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headings = []; onload = function(){ headings = document.querySelectorAll('h2'); }; onscroll = function(e){ var heading = find(window.scrollY); if (!heading) return; var links = document.querySelectorAll('#menu a') , link; for (var i = 0, len = links.length; i < len; ++i) { link = links[i]; link.className = link.getAttribute('href') == '#' + heading.id ? 'active' : ''; } }; function find(y) { var i = headings.length , heading; while (i--) { heading = headings[i]; if (y > heading.offsetTop) { return heading; } } } |