topic Re: onExtentChange on esri 4.X in ArcGIS JavaScript Maps SDK Questions

onExtentChange on esri 4.X

UdyWa — Fri, 28 Jul 2017 15:26:46 GMT

Does esri 4.x versions has an event equivalent to onExtentChange for Map?

map.on("extent-change", function(){//do things});

Re: onExtentChange on esri 4.X

JohnGrayson — Sat, 11 Dec 2021 20:39:52 GMT

Read the section "Watching properties" here: Working with properties | ArcGIS API for JavaScript 4.4

view.watch("extent", (newValue, oldValue, property, object)=>{
  console.info("Extent has changed: ", newValue);
});‍‍‍‍‍‍‍‍‍

Re: onExtentChange on esri 4.X

UdyWa — Fri, 28 Jul 2017 15:53:08 GMT

Does this work in 4.3 or is this new feature in 4.4?

Re: onExtentChange on esri 4.X

UdyWa — Fri, 28 Jul 2017 15:56:05 GMT

This is only for setting new values to the existing values. What I need to is load some markers to exact points on extent change so the markers will be loaded only in the visible area.

Re: onExtentChange on esri 4.X

JohnGrayson — Fri, 28 Jul 2017 15:57:31 GMT

Since 4.0; watching properties is the 4.x way of handling this use case.

Re: onExtentChange on esri 4.X

JohnGrayson — Fri, 28 Jul 2017 16:03:10 GMT

Please read the section "Watching properties".