使用jQuery将标题(<h1>--<h6>标签)解析为有序列表?

I'm making a table of contents, in the style of an ordered list, based on the header structure, such that:

<h1>lorem</h1>
<h2>ipsum</h2>
<h2>dolor</h2>
<h3>sit</h3> 
<h2>amet</h2>

变成:

• 洛雷姆
  • ipsum
  • 朵儿
    • 坐下

    这就是我目前的做法:

    $('h1, h2, h3, h4, h5, h6').each ()->
      # get depth from tag name
      depth = +@nodeName[1]
    
      $el = $("<li>").text($(this).text())
      do get_recursive_depth = ()->
        if depth is current_depth
          $list.append $el
        else if depth > current_depth
          $list.append( $("<ol>") ) unless $list.children().last().is('ol')
          $list = $list.children().last()
          current_depth += 1
          get_recursive_depth()
        else if depth < current_depth
          $list = $list.parent()
          current_depth -=1
          get_recursive_depth()
    

    哪个有效，但它似乎缺乏优雅.有没有更智能/更快/更健壮的方法来做到这一点?

    which works, but it seems like it lacks elegance. Is there a smarter / faster / more robust way to do this?

    推荐答案

    jQuery 实现:

    var $el, $list, $parent, last_depth;
    $list = $('ol.result');
    $parent = [];
    $parent[1] = $list;
    last_depth = 1;
    $el = 0;
    $('h1, h2, h3, h4, h5, h6').each(function () {
        var depth;
        depth = +this.nodeName[1];
        if (depth > last_depth) {
            $parent[depth] = $('<ol>').appendTo($el);
        }
        $el = $("<li>").text($(this).text());
        $parent[depth].append($el);
        return last_depth = depth;
    });
    

    也许有人会派上用场))

    Maybe someone will come in handy))