el-table手动触发懒加载

二次修改了一下，确保点击某一单元格格元素触发

// 隐藏懒加载箭头后手动触发懒加载
expandRows(scope){
    scope.row.isExpanded = !scope.row.isExpanded // 切换展开状态
    let isExpanded = scope.row.isExpanded
    const { table: { toggleRowExpansion, store }} = this.$refs;
    const { states: { lazy, treeData, rowKey }, assertRowKey, loadData } = store            
    
    const id = getRowIdentity(scope.row, rowKey)
    const data = treeData[id]

    if (isExpanded) {
        // 懒加载则调用懒加载
        if (lazy && data && 'loaded' in data && !data.loaded) {
            return loadData(scope.row, id, data)
        }
    }
    // 其余调用el-table的展开方法
    return toggleRowExpansion(scope.row, isExpanded)
    
    function getRowIdentity(row, rowKey) {
        if (!row) throw new Error('row is required when get row identity');
        if (typeof rowKey === 'string') {
            if (rowKey.indexOf('.') < 0) {
                return row[rowKey];
            }
            let key = rowKey.split('.');
            let current = row;
            for (let i = 0; i < key.length; i++) {
                current = current[key[i]];
            }
            return current;
        } else if (typeof rowKey === 'function') {
            return rowKey.call(null, row);
        }
    }
}

参考链接：el-table 树形数据 懒加载模式下一键展开_togglerowexpansion lazy-CSDN博客