docs: function createContentLeft() {
      var oThis = this,
          htmlStr = "",
          left = 0,
          hStr = "",
          sumRowClass = '',
          topStr = "";
      // 高度可伸缩，暂时去掉内部的高度设置
      // if(this.countContentHeight && parseInt(this.contentHeight) > 0){
      // 	hStr = 'max-height:' + this.contentHeight + 'px;overflow:hidden;';
      // }else{
      // 	hStr = '';
      // }
      if (this.options.showSumRow && this.options.sumRowFirst && !this.options.sumRowFixed && this.options.sumRowHeight) {
          topStr = "top:" + this.options.sumRowHeight + 'px';
      }
      if (this.options.showSumRow) {
          sumRowClass = 'u-grid-content-left-sum';
          if (this.options.sumRowFirst && !this.options.sumRowFixed && this.dataSourceObj.rows.length > 0) {
              sumRowClass += ' u-grid-content-left-sum-first';
          }
      }
      if (this.options.multiSelect) {
          htmlStr += '<div class="u-grid-content-left u-grid-content-left-multi ' + sumRowClass + '" id="' + this.options.id + '_content_multiSelect" style="width:' + this.multiSelectWidth + 'px;' + hStr + topStr + '">';
          // 遍历生成所有行
          if (this.dataSourceObj.rows) {
              if (this.options.groupSumRow) {
                  htmlStr += oThis.createContentLeftMultiSelectGroupRows();
              } else {
                  $.each(this.dataSourceObj.rows, function (i) {
                      htmlStr += oThis.createContentLeftMultiSelectRow(this);
                  });
              }
          }
          htmlStr += '</div>';
          left += this.multiSelectWidth;
      }
      if (this.options.showNumCol) {
          htmlStr += '<div class="u-grid-content-left u-grid-content-left-num ' + sumRowClass + '" id="' + this.options.id + '_content_numCol" style="width:' + this.numWidth + 'px;left:' + left + 'px;' + hStr + topStr + '">';
          // 遍历生成所有行
          if (this.dataSourceObj.rows) {
              if (this.options.groupSumRow) {
                  htmlStr += oThis.createContentLeftNumColGroupRows();
              } else {
                  $.each(this.dataSourceObj.rows, function (i, row) {
                      htmlStr += oThis.createContentLeftNumColRow(i, row.value);
                  });
              }
          }
          htmlStr += '</div>';
      }
      return htmlStr;
  }