arcgis javascript api 事件的监听及移除

On Style Events 方式

var mapExtentChange = map.on("extent-change", changeHandler);

function changeHandler(evt){
  var extent = evt.extent,
      zoomed = evt.levelChange;
  // ... Do something ...

  // in some cases, you may want to disconnect the event listener
  mapExtentChange.remove();
}

Connect Style Event方式

dojo/_base/connect (also dojo.connect) example:

require(["dojo/_base/connect", "esri/map"],function(connect, Map) {
  ...
  var mapExtentChange_connect = connect.connect(map, "onExtentChange", changeHandler_connect);
  function changeHandler_connect(extent, delta, levelChange, lod){
    // ... Do something ...

    // in some cases, you may want to disconnect the event listener
    connect.disconnect(mapExtentChange_connect);
  }
}

https://developers.arcgis.com/javascript/jshelp/inside_events.html
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作者：萝卜耳朵
来源：CSDN
原文：https://blog.csdn.net/luckypeng/article/details/44409501
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