刚刚开始学arcgis api for JS就出问题了
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="content-type" content=" text/html; charset=utf-8" />
<title>第一个地图应用</title>
<link rel="stylesheet" type=" text/css" href=" http://localhost/css/arcgis_js_api/library/4.4/jsapi/js/dojo/dijit/themes/tundra/tundra.css"/>
<link rel="stylesheet" type="text/css" href="http://localhost/arcgis_js_api/library/4.4/jsapi/js/esri/css/esri.css" />
<script type="text/javascript" src="http://localhost/arcgis_js_api/library/4.4/jsapi/init.js"></script>
<script src="dojo/jsapi_vsdoc10_v44.js" type="text/javascript"></script>
<style type="text/css">
.MapClass
{ width:900px;
height:600px;
border:1px solid #000;
}
</style>
<script type="text/javascript">
dojo.require("esri.map");
dojo.addOnLoad(function ()
{
var MyMap = new esri.Map("MyMapDiv");
var MyTiledMapServiceLayer = new esri.layers.ArcGISTiledMapServiceLayer("http://www.arcgisonline.cn/ArcGIS/rest/services/ChinaOnlineCommunity/MapServer");
MyMap.addLayer(MyTiledMapServiceLayer)
}
)
</script>
</head>
<body class="tundra">
<div id="=MyMapDiv" class="MapClass"></div>
</body>
</html>
照着教程敲了第一段代码,运行出来只有白框,这是因为啥啊