Figure out the pagination buttons

pagination.js

Handlebars.registerHelper('pagebuttons', function(totalMatching, currStart, query) {
  var q = query,
    out = "",
    pages = (parseInt(totalMatching / 10)) + 1,
    currPage = currStart <= 1 ? 1 : (currStart + 9) / 10,
    startPage = (currPage - 2) >= 1 ? (currPage === pages ? currPage - 2 : currPage - 1) : 1,
    endPage = (currPage + 2) <= pages ? (currPage === 1 ? currPage + 2 : currPage + 1) : pages,
    i;

  for (i = startPage; i <= endPage; i++) {
    out = out + '<a ' + 'class="search__pagination-link';
    if (i === currPage) out = out + ' search__pagination-link--current';
	  out = out + '" href="?query=' + q + '&start-rank=' + parseInt(((i-1) * 10) + 1) + '">' + i + "</a>\n";
  }
  return out;
});