ArcGIS api for js 3.x與4.x 的一些變化

1、4.x 多了MapView，地圖在MapView中顯示

4.x

var map = new Map({  
   basemap: "streets"  
 }); 
var view = new MapView({
   container: "viewDiv",
   map: map,
   center: [-85.050200, 33.125524],
   zoom: 6
  });

<div id="viewDiv"></div>

3.x

 map = new Map("map", {
      extent: extent,
      center: [-85.050200, 33.125524],  
      zoom: 13  
    });

<div id="map"></div>

2、layer發生變化，除了增加一些新layer之外，以前的如ArcGISDynamicMapServiceLayer被新的MapImageLayer取代。

3、操作layer的方式發生變化，具體可以查看其api，如添加新圖層

4.x

var streetMap = new MapImageLayer("http://localhost:6080/arcgis/rest/services/Network/MapServer");
map.layers.add(streetMap);

3.x

 var streetMap = new ArcGISDynamicMapServiceLayer("http://localhost:6080/arcgis/rest/services/Network/MapServer");
 map.addLayer(streetMap);