Array updating using the foreach method in Angular

Hey everyone, I've encountered an error that seems to be related to scope and I could use some advice. I'm currently looping through an array and trying to push the results to another array. However, when I attempt to push the results to public myArray:Array from within this.test.forEach, I receive the error "does not exist on type void." Any guidance would be greatly appreciated.

 export class componentName implements OnInit {
 public myArray:Array<any>;

 ngOnInit() {
  this.test = diff(this.example1, this.example2);

  this.test.forEach(function(part){
    let span = document.createElement('span');
    span.appendChild(document.createTextNode(part.value));

    this.myArray.push(span); // error does not exist on type void
  });
}

Answer №1

The primary issue lies in your utilization of an incorrect scope for this.

this.test.forEach(function(part){

Instead, it should be:

this.test.forEach((part)=>{

Furthermore, make sure to initialize your array properly.

let myArray: Array<any> = [];

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