javascript - 类型 'map' Angular 上不存在属性 'Object'

Question

我的dashboard.component.ts中有代码，就像这样:

this.scheduleService.getShiftSchedule().subscribe((temp)=>{
  this.api = temp;
  var ids = [['user_id', 1], ['status', 2]],
  result = temp.map(o => ids.map(([key, id]) => ({ id, content: o[key] })));
  this.tablePresetData = result;
})

以及导入库:

import { Component, OnInit, ViewEncapsulation, ViewChild } from '@angular/core';
import { TicketService } from '../../ticket.service';
import { ScheduleService } from '../../schedule.service';
import {Chart} from 'chart.js';
import { Injectable } from '@angular/core';
import { HttpEvent, HttpInterceptor, HttpHandler, HttpRequest } from '@angular/common/http';
import { map, filter, switchMap } from 'rxjs/operators';

我在编写这段代码时是否犯过任何错误？或者我只是忘记了什么？

Answer 1

native map 仅存在于数组中。如果你想在一个对象上使用map，你可以使用lodash;

所以如果你使用lodash

import { map } from 'lodash';
result = map(temp, o => ids.map(([key, id]) => ({ id, content: o[key] })));

否则你必须循环遍历对象的键列表，例如

result = Object.keys(temp).map(o => ids.map(([key, id]) => ({ id, content: temp[o][key] })));