hdodov

function iframeURLChange(iframe, callback) {
    var lastDispatched = null;

    var dispatchChange = function () {
        var newHref = iframe.contentWindow.location.href;

        if (newHref !== lastDispatched) {
            callback(newHref);
            lastDispatched = newHref;
        }

btroncone

Which do you prefer?

Adding to common sub, calling subscription.unsubscribe() in ngOnDestroy:

export class MyComponent {
  private _subscription: Subscription;
  
  ngOnInit() {
    this._subscription = myObservable