默认加载地图，主页设置

页面中：

<div id="mapDiv">

<div  id="homeButtonDiv"></div>

</div>  

js函数中：

require([

            "dojo/dom",
            "dojo/on",
            "esri/map",
            "esri/layers/ArcGISTiledMapServiceLayer","esri/layers/FeatureLayer","esri/layers/ArcGISDynamicMapServiceLayer",
            "esri/dijit/OverviewMap","esri/dijit/Search","esri/dijit/Scalebar","esri/dijit/HomeButton",
            "esri/InfoTemplate"
        ],function(dom,
                   on,
                   Map,
                   ArcGISTiledMapServiceLayer,FeatureLayer,ArcGISDynamicMapServiceLayer,
                   OverviewMap,Search,Scalebar,HomeButton,

                   InfoTemplate){

    var map = new Map("mapDiv", {

                maxZoom:6,   //最大缩放比例

                minZoom:2,

                sliderOrientation : "vertical"

            });

            var baseMapLayer=new ArcGISTiledMapServiceLayer("localhost:6080/arcgis/rest/services/allSouthXqq/MapServer");

            map.addLayer(baseMapLayer);

            baseMapLayer.on('load',function(){

                map.setExtent(baseMapLayer.initialExtent);   //初始地图范围

            });

            /* 默认加载热点区域轮廓*/

            var hotFeaLayer = new FeatureLayer("http://211.95.58.184:6080/arcgis/rest/services/pulizArea/MapServer/0",{

                "opacity": 0.5,

                outFields: ["*"]

            });

            map.addLayer(hotFeaLayer);

            on(hotFeaLayer,"click",function(){

console.log("hello")          

            });

            /*返回主页*/

            var homeButton = new HomeButton({

                map: map

            }, dojo.create('homeButton'));

            dojo.place(homeButton.domNode,dojo.byId('homeButtonDiv'));

            homeButton.startup();

})