Question

我需要一个解决方案，将Object中的一些值（ weekdayMap ）添加到包含对象的现有数组（ vehicleAvailabilities ）中。在第一天，我需要值 Montag 在第2天，值 Dienstag

等等

我需要这样的结果：

const result = [
  {id: 1, day: "1", value: true, weekday: 'Montag'},
  {id: 2, day: "2", value: true, weekday: 'Dienstag'} ...

从这两个：

const vehicleAvailabilities = [
  {id: 1, day: "1", value: true},
  {id: 2, day: "2", value: true},
  {id: 3, day: "3", value: true},
  {id: 4, day: "4", value: true},
  {id: 5, day: "5", value: true},
  {id: 6, day: "6", value: false},
  {id: 7, day: "7", value: false}
]

const weekdayMap = {
  1: 'Montag',
  2: 'Dienstag',
  3: 'Mittwoch',
  4: 'Donnerstag',
  5: 'Freitag',
  6: 'Samstag',
  7: 'Sonntag'
}

Answer 1

这是demo，我喜欢数组地图和js

中的所有新功能代码

const vehicleAvailabilities = [
  {id: 1, day: "1", value: true},
  {id: 2, day: "2", value: true},
  {id: 3, day: "3", value: true},
  {id: 4, day: "4", value: true},
  {id: 5, day: "5", value: true},
  {id: 6, day: "6", value: false},
  {id: 7, day: "7", value: false}
]

const weekdayMap = {
  1: 'Montag',
  2: 'Dienstag',
  3: 'Mittwoch',
  4: 'Donnerstag',
  5: 'Freitag',
  6: 'Samstag',
  7: 'Sonntag'
}
let re = vehicleAvailabilities.map(function(item){
    item.weekday = weekdayMap[item.day];
  return item;
})
console.log(re);

Answer 2

为此制作自己的功能：

＆＃13;

const vehicleAvailabilities = [
  {id: 1, day: "1", value: true},
  {id: 2, day: "2", value: true},
  {id: 3, day: "3", value: true},
  {id: 4, day: "4", value: true},
  {id: 5, day: "5", value: true},
  {id: 6, day: "6", value: false},
  {id: 7, day: "7", value: false}
]

const weekdayMap = {
  1: 'Montag',
  2: 'Dienstag',
  3: 'Mittwoch',
  4: 'Donnerstag',
  5: 'Freitag',
  6: 'Samstag',
  7: 'Sonntag'
}

function mergeMapIntoArray(map, array) {
  return array.map((entry) => { entry.weekday = map[entry.id]; return entry; });
}

console.log(mergeMapIntoArray(weekdayMap, vehicleAvailabilities));

＆＃13;

Answer 3

ES6解决方案。

const a = [{id:1,day:"1",value:true},{id:2,day:"2",value:true},{id:3,day:"3",value:true},{id:4,day:"4",value:true},{id:5,day:"5",value:true},{id:6,day:"6",value:false},{id:7,day:"7",value:false}];
const b = {1:'Montag',2:'Dienstag',3:'Mittwoch',4:'Donnerstag',5:'Freitag',6:'Samstag',7:'Sonntag'};

const r = Object.keys(b).map((v, i) => ({ weekday: b[v], ...a[i] }));

console.log(r);

Answer 4

这是一个使用地图的示例脚本，只需向对象添加新属性即可。

＆＃13;

var vehicleAvailabilities = [
  {id: 1, day: "1", value: true},
  {id: 2, day: "2", value: true},
  {id: 3, day: "3", value: true},
  {id: 4, day: "4", value: true},
  {id: 5, day: "5", value: true},
  {id: 6, day: "6", value: false},
  {id: 7, day: "7", value: false}
];
const weekdayMap = {
  1: 'Montag',
  2: 'Dienstag',
  3: 'Mittwoch',
  4: 'Donnerstag',
  5: 'Freitag',
  6: 'Samstag',
  7: 'Sonntag'
}
var result = [];
var item;
for(var i=0;i<vehicleAvailabilities.length;i++){
	item = vehicleAvailabilities[i];
	item.weekday = weekdayMap[parseInt(item.day)];
	result.push(item);
}
console.log(result);

＆＃13;

Answer 5

如果你使用打字稿或ES6，你可以更容易地从@ÁlvaroTouzón提出建议：

let re = vehicleAvailabilities.map(item => item.weekday = weekdayMap[item.day])

在Javascript中添加Array Object中Object的值

5 个答案: