(官方说明http://help.arcgis.com/en/webapi/javascript/arcgis/help/jsapi_start.htm)
注:The Code Assist Plugin is currently only available for Aptana Studio 2.
在esri资源中心下载好js的帮助包(zip),解压后将.jar拷入aptana目录下的plugins目录下。
启动aptana,Window -> Show View -> References,在Global References 标签下选择相应的js帮助版本