el-table去除双滚动条

  created() {
    this.updateTableMaxHeight();
    window.addEventListener('resize', this.updateTableMaxHeight); // 监听窗口大小变化
  },
  beforeDestroy() {
    window.removeEventListener('resize', this.updateTableMaxHeight);
  },
  methods: {
		// 改变table的最大高度
		updateTableMaxHeight() {
		  const viewportHeight = window.innerHeight;
		  let tableMaxHeight = viewportHeight - 216;
		  this.tableMaxHeight = tableMaxHeight > 400 ? tableMaxHeight : 400;
		},


 <el-table  :max-height="tableMaxHeight"

data: {
         // table最大高度
      tableMaxHeight: 0,
}