<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <html>  <head>   <title> New Document </title>   <meta name="Generator" content="EditPlus">   <meta name="viewport" content="initial"   <meta name="Author" content="initial-scale=1.0,user-scalable=no">   <meta name="Keywords" content="">   <meta name="Description" content="">   <!--设置样式，使地图充满整个浏览器窗口-->   <style type="text/css">    html{height:100%}    body{height:100%;margin:0px;padding:0px}    #container{height:100%}    </style>    <!--引用百度地图的api，其中v代表版本-->    <script type="text/javascript" src="http://api.map.baidu.com/api?v=1.2"></script>    <script type="text/javascript" src="http://api.map.baidu.com/library/GeoUtils/1.2/src/GeoUtils_min.js"></script>       <script type="text/javascript" src="markerclusterer.js"></script>   </head>   <body>    <div id="container"></div><!--地图容器-->    <script type="text/javascript">      //创建一个地图实例，参数可以是元素id也可以是元素对象，其中BMap是百度地图API里面的命名空间       var map = new BMap.Map("container"); 	 map.centerAndZoom(new BMap.Point(116.404, 39.915),4);//创建一个坐标点，其中116表示经度，39表示纬度     //创建地图实例后，必须对其进行初始化，初始化后才能进行其它的操作，该方法设置中心点坐标和地图级别 	 //map.centerAndZoom(point,16); 	 //启用轮滚进行放大缩小，默认为禁用 	 map.enableScrollWheelZoom(); 	 //向地图添加控件 	 map.addControl(new BMap.NavigationControl());//平移缩放控件，默认在地图左上 	 	 //var marker=new BMap.Marker(point); //创建标注 	 var p1 = new BMap.Point(116.387452,39.947302); 	 var p2 = new BMap.Point(116.361581,39.961129); 	 var p3 = new BMap.Point(116.437901,39.960133); 	 var p4 = new BMap.Point(116.459748,39.919528); 	 var p5 = new BMap.Point(116.424247,39.939557); 	 var p6 = new BMap.Point(116.485188,39.974511); 	 var p7 = new BMap.Point(116.485188,39.974511); 	 var p8 = new BMap.Point(116.494243,39.930484); 	 var p9 = new BMap.Point(116.45328,39.884103); 	 var p0 = new BMap.Point(116.456011,39.844671); 	 var p11 = new BMap.Point(116.387165,39.850654); 	 var p12 = new BMap.Point(116.461185,39.8975); 	 var p13 = new BMap.Point(116.380122,39.87458); 	 var p14 = new BMap.Point(116.354395,39.899825); 	 var p15 = new BMap.Point(116.394495,39.887093); 	 var p16 = new BMap.Point(116.30524,39.902482); 	 var p17 = new BMap.Point(116.287992,39.937676); 	 var p18 = new BMap.Point(116.277931,39.911116); 	 var p19 = new BMap.Point(116.340166,39.929267); 	 var p10 = new BMap.Point(116.290004,39.965885); 	 var p21 = new BMap.Point(116.377535,39.966548); 	 var p22 = new BMap.Point(116.423672,39.95239); 	 var p23 = new BMap.Point(116.423672,39.95239); 	 var p24 = new BMap.Point(116.300353,40.003146); 	 var p25 = new BMap.Point(116.294172,39.982251); 	 var p26 = new BMap.Point(116.313432,39.977497); 	 var p27 = new BMap.Point(116.390183,39.983357); 	 var p28 = new BMap.Point(116.390183,39.983357); 	 var p29 = new BMap.Point(116.484469,39.943872); 	 var p20 = new BMap.Point(116.509191,39.932586);  	 var m1 = new BMap.Marker(p1);  	 var m2 = new BMap.Marker(p2);  	 var m3 = new BMap.Marker(p3);  	 var m4 = new BMap.Marker(p4);  	 var m5 = new BMap.Marker(p5);  	 var m6 = new BMap.Marker(p6); 	 var m7 = new BMap.Marker(p7); 	 var m8 = new BMap.Marker(p8); 	 var m9 = new BMap.Marker(p9);  	 var m0 = new BMap.Marker(p0);  	 var m11 = new BMap.Marker(p11);  	 var m12 = new BMap.Marker(p12); 	 var m13 = new BMap.Marker(p13); 	 var m14 = new BMap.Marker(p14); 	 var m15 = new BMap.Marker(p15);  	 var m16 = new BMap.Marker(p16);  	 var m17 = new BMap.Marker(p17); 	 var m18 = new BMap.Marker(p18); 	 var m19 = new BMap.Marker(p19);  	 var m10 = new BMap.Marker(p10);  	 var m21 = new BMap.Marker(p21);  	 var m22 = new BMap.Marker(p22); 	 var m23 = new BMap.Marker(p23);  	 var m24 = new BMap.Marker(p24);  	 var m25 = new BMap.Marker(p25);  	 var m26 = new BMap.Marker(p26);  	 var m27 = new BMap.Marker(p27);  	 var m28 = new BMap.Marker(p28);  	 var m29 = new BMap.Marker(p29);  	 var m20 = new BMap.Marker(p20);        var markers=[]; 	 for(var i=0;i<100;i++){ 	   var pt=new BMap.Point(Math.random()*40+85,Math.random()*30+21); 	   var marker=new BMap.Marker(pt); 	   markers.push(marker); 	 }  	 //var markers = [m1,m2,m3,m4,m5,m6,m7,m8,m9,m0,m11,m12,m13,m14,m15,m16,m17,m18,m19,m10,m21,m22,m23,m24,m25,m26,m27,m28,m29,m20];  	 function addMymarkers(){     	    	   for(i=0;i<markers.length;i++){         	   var result = BMapLib.GeoUtils.isPointInRect(markers[i].point,map.getBounds());         	   if(result == true){ 	      map.addOverlay(markers[i]); 	   }else{ 	      map.removeOverlay(markers[i]); 	   } 	  }  	 } 	   //var markerClusterer = new MarkerClusterer(map, markers);        map.addEventListener("tilesloaded", addMymarkers);       map.addEventListener("zoomend", addMymarkers);       map.addEventListener("moveend", addMymarkers);    </script> <div style="width:520px;height:340px;border:1px solid gray" id="container"></div>  </body>   </html>