docs: function createGridDivs() {
      if (this.createGridFlag) {
          return;
      }
      // 为避免重复渲染，在开始清空里面内容
      if ($('#' + this.options.id)[0]) $('#' + this.options.id)[0].innerHTML = '';
      var htmlStr = '<div id="' + this.options.id + '_grid" class="u-grid">';
      htmlStr += this.createHeader();
      htmlStr += this.createBeginNoScroll();
      htmlStr += this.createContent();
      htmlStr += this.createEndNoScroll();
      htmlStr += '</div>';
      if ($('#' + this.options.id)[0]) $('#' + this.options.id).html(htmlStr);
      $('#' + this.options.id + '_column_menu').remove();
      $(document.body).append(this.createColumnMenu());
      this.initGridEventFun();
      this.headerFirstClassFun();
      this.showType = 'grid';
      this.afterGridDivsCreate();
      this.createGridFlag = true;
      this.realtimeTableRows = null;
  }