如何在ag-grid cellRendererParams操作中显示鼠标经过的文本

columnDefs: [
  {
    headerName: '列名',
    field: '字段名',
    cellRenderer: 'customCellRenderer',
    cellRendererParams: {
      showTooltip: true
    }
  },
  // 其他列定义...
]

function customCellRenderer(params) {
  var value = params.value;
  var showTooltip = params.showTooltip;

  var cellElement = document.createElement('div');
  cellElement.classList.add('custom-cell');

  if (showTooltip) {
    cellElement.title = value; // 设置鼠标经过时显示的文本
  }

  cellElement.textContent = value;

  return cellElement;
}

gridOptions: {
  // 其他配置项...
  components: {
    customCellRenderer: customCellRenderer
  }
}