Does esri 4.x versions has an event equivalent to onExtentChange for Map?
map.on("extent-change", function(){//do things});
Read the section "Watching properties" here: Working with properties | ArcGIS API for JavaScript 4.4
view<SPAN class="punctuation token">.</SPAN><SPAN class="token function">watch</SPAN><SPAN class="punctuation token">(</SPAN><SPAN class="string token">"extent"</SPAN><SPAN class="punctuation token">,</SPAN> <SPAN class="punctuation token">(</SPAN>newValue<SPAN class="punctuation token">,</SPAN> oldValue<SPAN class="punctuation token">,</SPAN> property<SPAN class="punctuation token">,</SPAN> object<SPAN class="punctuation token">)</SPAN><SPAN class="operator token">=</SPAN><SPAN class="operator token">></SPAN><SPAN class="punctuation token">{</SPAN> console<SPAN class="punctuation token">.</SPAN><SPAN class="token function">info</SPAN><SPAN class="punctuation token">(</SPAN><SPAN class="string token">"Extent has changed: "</SPAN><SPAN class="punctuation token">,</SPAN> newValue<SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">;</SPAN> <SPAN class="punctuation token">}</SPAN><SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">;</SPAN><SPAN class="line-numbers-rows"><SPAN></SPAN><SPAN></SPAN><SPAN></SPAN></SPAN>
Does this work in 4.3 or is this new feature in 4.4?
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.
Since 4.0; watching properties is the 4.x way of handling this use case.
Please read the section "Watching properties".
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