topic Re: How to determine whether the map is at the maximum zoom level in ArcGIS JavaScript Maps SDK Questions

How to determine whether the map is at the maximum zoom level

StephenLead — Wed, 04 Jul 2012 00:56:17 GMT

Is there a property on the map to show whether it is already at the maximum zoom level (that is, it's not possible to zoom in any further)?

The map can return its current zoom level using map.getLevel(), but how can I determine whether this is the maximum level? (I'm looking for generic functionality so I can't guarantee that the map has LODs specified, and I can't guarantee that the Zoom slider is present - two workarounds I already considered)

Thanks,
Steve

Re: How to determine whether the map is at the maximum zoom level

RahulMetangale1 — Sat, 11 Dec 2021 13:10:00 GMT

Hi Steve,

You can use following to get the min and max level of map

map._slider.maximum
map._slider.minimum

You can compare the current level of map with the max or min level.

Hope this helps.

Re: How to determine whether the map is at the maximum zoom level

StephenLead — Thu, 05 Jul 2012 01:09:05 GMT

Thanks for the tip - looks like a reasonable workaround.

Is it valid to depend on properties with an underscore (as with map._slider)?

I always thought they were not fully supported and shouldn't be used?

Cheers,
Steve

Re: How to determine whether the map is at the maximum zoom level

RahulMetangale1 — Thu, 05 Jul 2012 03:55:13 GMT

Till now i have not come across any issue in using this property.