element ui表格抖动

element ui表格抖动的原因是因为无论是显示列还是隐藏列，vue都需要重新计算单元格的高度和宽度，然后再重新渲染到页面上。因为这个过程被直接反馈到了页面上，所以导致了table发生闪烁。解决方法是使用element中的dolayout函数。具体实现方法如下：

<template>
  <el-table
    :data="tableData"
    style="width: 100%"
    :key="tableKey"
    ref="table"
    @selection-change="handleSelectionChange"
    @sort-change="handleSortChange"
    @filter-change="handleFilterChange"
    @row-click="handleRowClick"
    @row-dblclick="handleRowDblclick"
    @row-contextmenu="handleRowContextmenu"
    @header-click="handleHeaderClick"
    @header-contextmenu="handleHeaderContextmenu"
    @current-change="handleCurrentChange"
    @header-dragend="handleHeaderDragend"
    @expand-change="handleExpandChange"
    @select="handleSelect"
    @select-all="handleSelectAll"
    @cell-mouse-enter="handleCellMouseEnter"
    @cell-mouse-leave="handleCellMouseLeave"
    @cell-click="handleCellClick"
    @cell-dblclick="handleCellDblclick"
    @cell-contextmenu="handleCellContextmenu"
    @edit-disabled="handleEditDisabled"
    @edit-closed="handleEditClosed"
    @edit-actived="handleEditActived"
    @edit-canceled="handleEditCanceled"
    @edit-submit="handleEditSubmit"
    @edit-command="handleEditCommand"
    @edit-queue-full="handleEditQueueFull"
    @edit-clear="handleEditClear"
    @edit-validate="handleEditValidate"
    @edit-invalid="handleEditInvalid"
    @edit-valid="handleEditValid"
    @edit-error="handleEditError"
    @edit-reset="handleEditReset"
    @edit-render="handleEditRender"
    @edit-parse-value="handleEditParseValue"
    @edit-format-value="handleEditFormatValue"
    @edit-select-all="handleEditSelectAll"
    @edit-tab="handleEditTab"
    @edit-toggle-dropdown="handleEditToggleDropdown"
    @edit-click="handleEditClick"
    @edit-focus="handleEditFocus"
    @edit-blur="handleEditBlur"
    @edit-change="handleEditChange"
    @edit-input="handleEditInput"
    @edit-composition-start="handleEditCompositionStart"
    @edit-composition-update="handleEditCompositionUpdate"
    @edit-composition-end="handleEditCompositionEnd"
    @edit-custom-command="handleEditCustomCommand"
    @edit-custom-button-click="handleEditCustomButtonClick"
    @edit-custom-cell-click="handleEditCustomCellClick"
    @edit-custom-cell-mouseenter="handleEditCustomCellMouseenter"
    @edit-custom-cell-mouseleave="handleEditCustomCellMouseleave"
    @edit-custom-cell-contextmenu="handleEditCustomCellContextmenu"
    @edit-custom-cell-dblclick="handleEditCustomCellDblclick"
    @edit-custom-cell-focus="handleEditCustomCellFocus"
    @edit-custom-cell-blur="handleEditCustomCellBlur"
    @edit-custom-cell-keydown="handleEditCustomCellKeydown"
    @edit-custom-cell-keyup="handleEditCustomCellKeyup"
    @edit-custom-cell-keypress="handleEditCustomCellKeypress"
    @edit-custom-cell-edit-disabled="handleEditCustomCellEditDisabled"
    @edit-custom-cell-edit-closed="handleEditCustomCellEditClosed"
    @edit-custom-cell-edit-actived="handleEditCustomCellEditActived"
    @edit-custom-cell-edit-canceled="handleEditCustomCellEditCanceled"
    @edit-custom-cell-edit-submit="handleEditCustomCellEditSubmit"
    @edit-custom-cell-edit-command="handleEditCustomCellEditCommand"
    @edit-custom-cell-edit-queue-full="handleEditCustomCellEditQueueFull"
    @edit-custom-cell-edit-clear="handleEditCustomCellEditClear"
    @edit-custom-cell-edit-validate="handleEditCustomCellEditValidate"
    @edit-custom-cell-edit-invalid="handleEditCustomCellEditInvalid"
    @edit-custom-cell-edit-valid="handleEditCustomCellEditValid"
    @edit-custom-cell-edit-error="handleEditCustomCellEditError"
    @edit-custom-cell-edit-reset="handleEditCustomCellEditReset"
    @edit-custom-cell-edit-render="handleEditCustomCellEditRender"
    @edit-custom-cell-edit-parse-value="handleEditCustomCellEditParseValue"
    @edit-custom-cell-edit-format-value="handleEditCustomCellEditFormatValue"
    @edit-custom-cell-edit-select-all="handleEditCustomCellEditSelectAll"
    @edit-custom-cell-edit-tab="handleEditCustomCellEditTab"
    @edit-custom-cell-edit-toggle-dropdown="handleEditCustomCellEditToggleDropdown"
    @edit-custom-cell-edit-click="handleEditCustomCellEditClick"
    @edit-custom-cell-edit-focus="handleEditCustomCellEditFocus"
    @edit-custom-cell-edit-blur="handleEditCustomCellEditBlur"
    @edit-custom-cell-edit-change="handleEditCustomCellEditChange"
    @edit-custom-cell-edit-input="handleEditCustomCellEditInput"
    @edit-custom-cell-edit-composition-start="handleEditCustomCellEditCompositionStart"
    @edit-custom-cell-edit-composition-update="handleEditCustomCellEditCompositionUpdate"
    @edit-custom-cell-edit-composition-end="handleEditCustomCellEditCompositionEnd"
    @edit-custom-cell-edit-custom-command="handleEditCustomCellEditCustomCommand"
    @edit-custom-cell-edit-custom-button-click="handleEditCustomCellEditCustomButtonClick"
    @edit-custom-cell-edit-custom-cell-click="handleEditCustomCellEditCustomCellClick"
    @edit-custom-cell-edit-custom-cell-mouseenter="handleEditCustomCellEditCustomCellMouseenter"
    @edit-custom-cell-edit-custom-cell-mouseleave="handleEditCustomCellEditCustomCellMouseleave"
    @edit-custom-cell-edit-custom-cell-contextmenu="handleEditCustomCellEditCustomCellContextmenu"
    @edit-custom-cell-edit-custom-cell-dblclick="handleEditCustomCellEditCustomCellDblclick"
    @edit-custom-cell-edit-custom-cell-focus="handleEditCustomCellEditCustomCellFocus"
    @edit-custom-cell-edit-custom-cell-blur="handleEditCustomCellEditCustomCellBlur"
    @edit-custom-cell-edit-custom-cell-keydown="handleEditCustomCellEditCustomCellKeydown"
    @edit-custom-cell-edit-custom-cell-keyup="handleEditCustomCellEditCustomCellKeyup"
    @edit-custom-cell-edit-custom-cell-keypress="handleEditCustomCellEditCustomCellKeypress"
    @edit-custom-cell-edit-custom-cell-edit-disabled="handleEditCustomCellEditCustomCellEditDisabled"
    @edit-custom-cell-edit-custom-cell-edit-closed="handleEditCustomCellEditCustomCellEditClosed"
    @edit-custom-cell-edit-custom-cell-edit-actived="handleEditCustomCellEditCustomCellEditActived"
    @edit-custom-cell-edit-custom-cell-edit-canceled="handleEditCustomCellEditCustomCellEditCanceled"
    @edit-custom-cell-edit-custom-cell-edit-submit="handleEditCustomCellEditCustomCellEditSubmit"
    @edit-custom-cell-edit-custom-cell-edit-command="handleEditCustomCellEditCustomCellEditCommand"
    @edit-custom-cell-edit-custom-cell-edit-queue-full="handleEditCustomCellEditCustomCellEditQueueFull"
    @edit-custom-cell-edit-custom-cell-edit-clear="handleEditCustomCellEditCustomCellEditClear"
    @edit-custom-cell-edit-custom-cell-edit-validate="handleEditCustomCellEditCustomCellEditValidate"
    @edit-custom-cell-edit-custom-cell-edit-invalid="handleEditCustomCellEditCustomCellEditInvalid"
    @edit-custom-cell-edit-custom-cell-edit-valid="handleEditCustomCellEditCustomCellEditValid"
    @edit-custom-cell-edit-custom-cell-edit-error="handleEditCustomCellEditCustomCellEditError"
    @edit-custom-cell-edit-custom-cell-edit-reset="handleEditCustomCellEditCustomCellEditReset"
    @edit-custom-cell-edit-custom-cell-edit-render="handleEditCustomCellEditCustomCellEditRender"
    @edit-custom-cell-edit-custom-cell-edit-parse-value="handleEditCustomCellEditCustomCellEditParseValue"
    @edit-custom-cell-edit-custom-cell-edit-format-value="handleEditCustomCellEditCustomCellEditFormatValue"
    @edit-custom-cell-edit-custom-cell-edit-select-all="handleEditCustomCellEditCustomCellEditSelectAll"
    @edit-custom-cell-edit-custom-cell-edit-tab="handleEditCustomCellEditCustomCellEditTab"
    @edit-custom-cell-edit-custom-cell-edit-toggle-dropdown="handleEditCustomCellEditCustomCellEditToggleDropdown"
    @edit-custom-cell-edit-custom-cell-edit-click="handleEditCustomCellEditCustomCellEditClick"
    @edit-custom-cell-edit-custom-cell-edit-focus="handleEditCustomCellEditCustomCellEditFocus"
    @edit-custom-cell-edit-custom-cell-edit-blur="handleEditCustomCellEditCustomCellEditBlur"
    @edit-custom-cell-edit-custom-cell-edit-change="handleEditCustomCellEditCustomCellEditChange"
    @edit-custom-cell-edit-custom-cell-edit-input="handleEditCustomCellEditCustomCellEditInput"
    @edit-custom-cell-edit-custom-cell-edit-composition-start="handleEditCustomCellEditCustomCellEditCompositionStart"
    @edit-custom-cell-edit-custom-cell-edit-composition-update="handleEditCustomCellEditCustomCellEditCompositionUpdate"
    @edit-custom-cell-edit-custom-cell-edit-composition-end="handleEditCustomCellEditCustomCellEditCompositionEnd"
    @edit-custom-cell-edit-custom-cell-edit-custom-command="handleEditCustomCellEditCustomCellEditCustomCommand"
    @edit-custom-cell-edit-custom-cell-edit-custom-button-click="handleEditCustomCellEditCustomCellEditCustomButtonClick"
    @edit-custom-cell-edit-custom-cell-edit-custom-cell-click="handleEditCustomCellEditCustomCellEditCustomCellClick"
    @edit-custom-cell-edit-custom-cell-edit-custom-cell-mouseenter="handleEditCustomCellEditCustomCellEditCustomCellMouseenter"
    @edit-custom-cell-edit-custom-cell-edit-custom-cell-mouseleave="handleEditCustomCellEditCustomCellEditCustomCellMouseleave"
    @edit-custom-cell-edit-custom-cell-edit-custom-cell-contextmenu="handleEditCustomCellEditCustomCellEditCustomCellContextmenu"
    @edit-custom-cell-edit-custom-cell-edit-custom-cell-dblclick="handleEditCustomCellEditCustomCellEditCustomCellDblclick"
    @edit-custom-cell-edit-custom-cell-edit-custom-cell-focus="handleEditCustomCellEditCustomCellEditCustomCellFocus"
    @edit-custom-cell-edit-custom-cell-edit-custom-cell-blur="handleEditCustomCellEditCustomCellEditCustomCellBlur"
    @edit-custom-cell-edit-custom-cell-edit-custom-cell-keydown="handleEditCustomCellEditCustomCellEditCustomCellKeydown"
    @edit-custom-cell-edit-custom-cell-edit-custom-cell-keyup="handleEditCustomCellEditCustomCellEditCustomCellKeyup"
    @edit-custom-cell-edit-custom-cell-edit-custom-cell-keypress="handleEditCustomCellEditCustomCellEditCustomCellKeypress"
    @edit-custom-cell-edit-custom-cell-edit-custom-cell-edit-disabled="handleEditCustomCellEditCustomCellEditCustomCellEditDisabled"
    @edit-custom-cell-edit-custom-cell-edit-custom-cell-edit-closed="handleEditCustomCellEditCustomCellEditCustomCellEditClosed"
    @edit-custom-cell-edit-custom-cell-edit-custom-cell-edit-actived="handleEditCustomCellEditCustomCellEditCustomCellEditActived"
    @edit-custom-cell-edit-custom-cell-edit-custom-cell-edit-canceled="handleEditCustomCellEditCustomCellEditCustomCellEditCanceled"
    @edit-custom-cell-edit-custom-cell-edit-custom-cell-edit-submit="handleEditCustomCellEditCustomCellEditCustomCellEditSubmit"
    @edit-custom-cell-edit-custom-cell-edit-custom-cell-edit-command="handleEditCustomCellEditCustomCellEditCustomCellEditCommand"
    @edit-custom-cell-edit-custom-cell-edit-custom-cell-edit-queue-full="handleEditCustomCellEditCustomCellEditCustomCellEditQueueFull"
    @edit-custom-cell-edit-custom-cell-edit-custom-cell-edit-clear="handleEditCustomCellEditCustomCellEditCustomCellEditClear"
    @edit-custom-cell-edit-custom-cell-edit-custom-cell-edit-validate="handleEditCustomCellEditCustomCellEditCustomCellEditValidate"
    @edit-custom-cell-edit-custom-cell-edit-custom-cell-edit-invalid="handleEditCustomCellEditCustomCellEditCustomCellEditInvalid"
    @edit-custom-cell-edit-custom-cell-edit-custom-cell-edit-valid="handleEditCustomCellEditCustomCellEditCustomCellEditValid"
    @edit-custom-cell-edit-custom-cell-edit-custom-cell-edit-error="handleEditCustomCellEditCustomCellEditCustomCellEditError"
    @edit-custom-cell-edit-custom-cell-edit-custom-cell-edit-reset="handleEditCustomCellEditCustomCellEditCustomCellEditReset"
    @edit-custom-cell-edit-custom-cell-edit-custom-cell-edit-render="handleEditCustomCellEditCustomCellEditCustomCellEditRender"
    @edit-custom-cell-edit-custom-cell-edit-custom-cell-edit-parse-value="handleEditCustomCellEditCustomCellEditCustomCellEditParseValue"
    @edit-custom-cell-edit-custom-cell-edit-custom-cell-edit-format-value="handleEditCustomCellEditCustomCellEditCustomCellEditFormatValue"
    @edit-custom-cell-edit-custom-cell-edit-custom-cell-edit-select-all="handleEditCustomCellEditCustomCellEditCustomCellEditSelectAll"
    @edit-custom-cell-edit-custom-cell-edit-custom-cell-edit-tab="handleEditCustomCellEditCustomCellEditCustomCellEditTab"
    @edit-custom-cell-edit-custom-cell-edit-custom-cell-edit-toggle-dropdown="handleEditCustomCellEditCustomCellEditCustomCellEditToggleDropdown"
    @edit-custom-cell-edit-custom-cell-edit-custom-cell-edit-click="handleEditCustomCellEditCustomCellEditCustomCellEditClick"
    @edit-custom-cell-edit-custom-cell-edit-custom-cell-edit-focus="handleEditCustomCellEditCustomCellEditCustomCellEditFocus"
    @edit-custom-cell-edit-custom-cell-edit-custom-cell-edit-blur="handleEditCustomCellEditCustomCellEditCustomCellEditBlur"
    @edit-custom-cell-edit-custom-cell-edit-custom-cell-edit-change="handleEditCustomCellEditCustomCellEditCustomCellEditChange"
    @edit-custom-cell-edit-custom-cell-edit-custom-cell-edit-input="handleEditCustomCellEditCustomCellEditCustomCellEditInput"
    @edit-custom-cell-edit-custom-cell-edit-custom-cell-edit-composition-start="handleEditCustomCellEditCustomCellEditCustomCellEditCompositionStart"
    @edit-custom-cell-edit-custom-cell-edit-custom-cell-edit-composition