keng42

<script>
  vm.dirs = [];
  let hs = vm.$els.article.querySelectorAll('h1, h2, h3, h4, h5, h6');
  for (var i = 0; i < hs.length; i++) {
    hs[i].setAttribute('id', 'dir-' + i);
    vm.dirs.push({
      link: '#dir-' + i,
      text: hs[i].innerText,
      cls: 'dir-' + hs[i].localName
    });

keng42

// encode(decode) html text into html entity
var decodeHtmlEntity = function(str) {
  return str.replace(/&#(\d+);/g, function(match, dec) {
    return String.fromCharCode(dec);
  });
};

var encodeHtmlEntity = function(str) {
  var buf = [];
  for (var i=str.length-1;i>=0;i--) {