Unable to access zoom level outside watchUtils.watch in ESRI

[MahaK]

Hi,

My code is like below

watchUtils.watch(this.mapView, "zoom", function (zoom) {

this.zoomLevel = zoom;

});

I want to access this.zoomLevel outside the watchUtils block as and when it is triggered.

But it is giving undefined.

PS: I have tried getter setter methods, and this.zoomLevel is declared globally.still facing the issue.

Can anyone suggest the solution?

[KenBuja]

You have to use lang.hitch to make sure "this" is retaining the correct context when being used in the function

watchUtils.watch(this.mapView, "zoom", lang.hitch(this, function (zoom) {
  this.zoomLevel = zoom;
}));