How can I Iterate through an Object and Display it as a key value pair in Angular?-CodePudding

I am trying to to loop through an Object in Angular with NgFor.

ngOnInit() {
    this.service.getConveyors()
    .subscribe(response => {
      this.conveyors = response;
      this.conveyorsArray = Object.keys(this.conveyors.data.conveyor);
  });

The html looks like this:

<div *ngFor="let item of conveyorsArray | keyvalue">
  Key: <b>{{item.key}}</b> and Value: <b>{{item.value}}</b>
</div>

The data I get from api looks like the picture below.

My output:

Key: 0 and Value: 0
Key: 1 and Value: 1
Key: 2 and Value: 2
Key: 3 and Value: 3
Key: 4 and Value: 4

I want to display all conveyors.

CodePudding user response：

You should not use object.keys in your component so it should be

this.conveyorsArray = this.conveyors.data.conveyor;

instead of

this.conveyorsArray = Object.keys(this.conveyors.data.conveyor);

Then on UI loop through your array first and then use keyvalue pipe on the object instead of array

<div *ngFor="let arrayitem of conveyorsArray">
  <div *ngFor="let item of arrayitem | keyvalue">
    Key: <b>{{item.key}}</b> and Value: <b>{{item.value}}</b>
  </div>
</div>