Question

我目前有以下数据：

code . \n

我正在尝试根据属性（区域，通道，容量）提取数据作为示例。

const data = [
        {
          Zone: 'Airport',
          Lane: 'AIRDEL',
          Capacity: '90',
          Status: '80',
          Spaces: '10',
          LastAuditedOn: 'due',
          AuditedBy: 'Ross',
          FirstCollection: '-',
          LastCollection: '-',
        },
        {
          Zone: 'Arrivals',
          Lane: '4',
          Capacity: '10',
          Status: '0',
          Spaces: '10',
          LastAuditedOn: '-',
          AuditedBy: '-',
          FirstCollection: '9:00PM',
          LastCollection: '01:00AM',
        },
        {
          Zone: 'Unknown',
          Lane: 'BHX_HOLD1',
          Capacity: '80',
          Status: '40',
          Spaces: '40',
          LastAuditedOn: 'due',
          AuditedBy: 'Max',
          FirstCollection: '-',
          LastCollection: '-',
        },
]

我希望值const multiHeaderBy = 'Zone'; data.forEach((key) => { console.log(key.find(multiHeaderBy)) });出现在arrivals, airport, unknown中，但我未定义。

想法？

Answer 1

您只需使用.map和.join()方法即可完成此操作，例如：

＆＃13;

const data=[{Zone:'Airport',Lane:'AIRDEL',Capacity:'90',Status:'80',Spaces:'10',LastAuditedOn:'due',AuditedBy:'Ross',FirstCollection:'-',LastCollection:'-',},{Zone:'Arrivals',Lane:'4',Capacity:'10',Status:'0',Spaces:'10',LastAuditedOn:'-',AuditedBy:'-',FirstCollection:'9:00PM',LastCollection:'01:00AM',},{Zone:'Unknown',Lane:'BHX_HOLD1',Capacity:'80',Status:'40',Spaces:'40',LastAuditedOn:'due',AuditedBy:'Max',FirstCollection:'-',LastCollection:'-',}];

const multiHeaderBy = 'Zone';
var txt = data.map(x => x[multiHeaderBy]);
console.log(txt.join(', '));

＆＃13;

Answer 2

使用map函数使用键

获取数组

var valueArr = data.map(e=>e.Zone);

console.log(valueArr) // ["Airport", "Arrivals", "Unknown"]

Answer 3

你必须使用[] backet而不是find函数。 [] backet用于使用动态密钥从对象获取值。

    const multiHeaderBy = 'Zone';
data.forEach((key) => {
   console.log(key[multiHeaderBy])
});

从地图中的属性中提取特定值

3 个答案: