https://sho-ei.net/js/cmn/ellipsis.js?v=1.0.10

1WebFont.load({
2  custom: {
3    families: ['tbudgothic-std','source-han-sans-japanese',],
4  },
5  active: function() {
6    jQuery(function($) {
7      $('.ellipsis').each(function() {
8        var $target = $(this);
9        var html = $target.html();
10
11        var $clone = $target.clone();
12        $clone
13          .css({
14            display: 'none',
15            position : 'absolute',
16            overflow : 'visible',
17            maxHeight: 'none',
18          })
19          .width($target.width())
20          .height('auto');
21
22        $target.after($clone);
23        while((html.length > 0) && ($clone.height() > $target.height() + 1)) {
24          html = html.substr(0, html.length - 1);
25          $clone.html(html + '...');
26        }
27
28        $target.html($clone.html());
29        $clone.remove();
30      });
31    });
32  }
33});