// http://blog.csdn.net/tongyiyi/article/details/51159470
// $("table").rowspan(0);
// 如果要合并多列中的行，则多次调用.rowspan()方法

(function ($) {
  'use strict'
  $.fn.extend({
    // 表格合并单元格，colIdx要合并的列序号，从0开始
    rowspan: function (colIdx) {
      return this.each(function () {
        var that
        $('tr', this).each(function () {
          $('td:eq(' + colIdx + ')', this).filter(':visible').each(function () {
            if (that !== null && $(this).html() === $(that).html()) {
              var rowspan = $(that).attr('rowSpan')
              if (typeof (rowspan) === 'undefined') {
                $(that).attr('rowSpan', 1)
                rowspan = $(that).attr('rowSpan')
              }
              rowspan = Number(rowspan) + 1
              $(that).attr('rowSpan', rowspan)
              $(this).addClass('no-word').hide()
            }
            else { that = this }
          })
        })
      })
    }
  })
})(jQuery)