在*ng中访问对象键和值，用于角度8

Question

我想访问ngFor中的对象键和值，例如这是我的数组

var array = [
  {'random1':value1},
  {'random2':value2},
  {'random3': value3}
]

<tr *ngFor="let item of arrayl; let i of index">
  <td>{{i+1}}</td>
  <td>item.key</td>// here i want object key
  <td>item.value</td>// here object value
</tr>

var array2 = [
 ['random1',value1],
 ['random2',value2],
 ['random3',value3]
]

Answer 1

演示案例1

<tr *ngFor="let item of array; let i = index">
   <td>{{i+1}}</td>
   <ng-container *ngFor="let el of item | keyvalue">
       <td>{{el.key}}</td>
       <td>{{el.value}}</td>
   </ng-container>
</tr>
     

案例2

<tr *ngFor="let item of array2; let i = index">
   <td>{{i+1}}</td>
   <td>{{item[0]}}</td>
   <td>{{item[1]}}</td>
</tr>