My challenge involves working with two arrays:
firstArray= [{id: 1, name:'firstValue1'}, {id:2, name:'firstValue2'}]
secondArray= [{ "num": 1, "fullName": SecondValue1 , id:1}]
I need to display the data in the following format:
firstValue1 -------->> SecondValue1
firstValue2 -------->>
How can I integrate these two arrays into [(ngModel)], input, or select box?
Thank you for your time and assistance!
To improve efficiency, consider converting secondArray from an Array to a HashMap
For instance
firstArray = [
{ id: 1, name:'firstValue1' },
{ id: 2, name:'firstValue2' }
];
secondArray = {
'1': { "num": 1, "fullName": "SecondValue1", id: 1 },
'2': { "num": 1, "fullName": "SecondValue2", id: 2 },
}
html
<div *ngFor="let item of firstArray">
<p>{{item.name}} --> {{secondArray[item.id]?.fullName}}</p>
</div>
If you're looking for a way to avoid adding an index manually to your secondArray, consider implementing this alternative:
import { Component } from '@angular/core';
@Component({
selector: 'my-app',
templateUrl: './app.component.html',
styleUrls: ['./app.component.css']
})
export class AppComponent {
firstArray = [
{ id: 1, name: 'firstValue1' },
{ id: 2, name: 'firstValue2' }
];
secondArray = [
{ "num": 1, "fullName": 'SecondValue1', id: 1 },
{ "num": 2, "fullName": 'SecondValue2', id: 2 }
];
getSecondArrayItem(id) {
return this.secondArray.find(item => item.id === id);
}
}
Utilize the following code snippet within the template:
<div *ngFor="let item of firstArray">
<p>{{item.name}} --> {{ getSecondArrayItem(item.id)?.fullName }}</p>
</div>
Explore this Functional StackBlitz Demo for reference.
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