topic Re: How to loop through and turn off ALL layers in ArcGIS JavaScript Maps SDK Questions

How to loop through and turn off ALL layers

CamCode — Thu, 05 Mar 2020 20:27:23 GMT

The below finds my layer and shows visible property in the console, when I toggle it there from 'true' or 'false' it changes.

myApp.mapview.map.findLayerById('cool_layer');

But when I run the below line, I can toggle my layers on or off individually, but how could I loop through all of them, and turn them all off? I am trying tocreate a 'reset' button.

myApp.mapview.map.findLayerById('cool_layer').visible = true;

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Re: How to loop through and turn off ALL layers

RobertScheitlin__GISP — Sat, 11 Dec 2021 22:50:56 GMT

Cam,

Loop through the myApp.mapView.map.layers collection and set the visibility property to false.

          view.map.layers.map(function(lyr){
            console.info(lyr);
            lyr.visible = false;
          });‍‍‍‍

Re: How to loop through and turn off ALL layers

CamCode — Fri, 06 Mar 2020 01:16:44 GMT

Thanks Robert, any idea on how to do something similar with all my filtering? How could I programatically find the following in the console, similar to how I am searching my layers: i.e. featureLayerView.filter i.e. FeatureFilter | ArcGIS API for JavaScript 4.14 - I can't find this in the console with the similar syntax i.e. below

myApp.mapview.map.findLayerById('cool_layer').visible = true;

Re: How to loop through and turn off ALL layers

RobertScheitlin__GISP — Fri, 06 Mar 2020 14:02:11 GMT

Cam,

Your issue is that the id of the layer is not the layer name normally it is something like:

view.map.findLayerById("Hazards_Uptown_Charlotte_665").visible = false;

If you do not know the exact layer id then you first have to loop through the maps layers and check the layers title or name to see if it matches 'cool layer' and get that layers actual id.