element-ui table 怎么保持选择状态

1.设置row-key

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<el-table :border="true" :highlight-current-row="true"
        v-loading="loading"
        element-loading-text="数据加载中..."
        element-loading-spinner="el-icon-loading"
        element-loading-background="rgba(0, 0, 0, 0.8)"
        ref="multipleTable"
        :data="partList"
        :row-key="getRowKey"
        tooltip-effect="dark"
        style="width: 100%"
        @select-all="handleSelectionAll"
        @selection-change="handleSelectionChange">
        
getRowKey (row) {
            return row.code
        },

  2.设 […]

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