1. 51map 标注接口
实现在地图上标注位置、采集位置信息等操作。说的普通点就是获得地图上某个地方的经纬度和放缩比例
使用这个接口需要引入两段js:
<script language="javascript" src="http://api.51ditu.com/js/maps.js"></script>
<script language="javascript" src="http://api.51ditu.com/js/ezmarker.js"></script>
2. 51map 标注接口效果图
该图主要显示了标注获得经纬度的结果。点击上面的标注位置这个按钮，可以出现一个地图，在地图上可以标注任何一个位置的地理位置。
使用该地图标注可以获得地图上的地理位置和地图的放缩比例。该功能主要用于采集数据。当然这个获得的经纬度数值不是单纯的经纬度，而是经纬度数字*100000 获得的。在上面一副图的文本框中可以看出。
3. 51map 标注用法代码说明
代码
1
<
html
>
2 < head >
3 < meta http - equiv = " Content-Type " content = " text/html; charset=UTF-8 " >
4 < title > Untitled Document < / title>
5 < script language = " javascript " src = " jquery-1[1].2.3.min.js " >< / script>
6 < script language = " javascript " src = " http://api.51ditu.com/js/maps.js " >< / script>
7 < script language = " javascript " src = " http://api.51ditu.com/js/ezmarker.js " >< / script>
8 < script language = " JavaScript " >
9
10 /* *
11 * LTEZMarker : 用于显示地图标注
12 * 该操作一般用于采集地理位置经纬度
13 *
14 * LTEvent.addListener 添加一个事件 由哪个标注值来填充数据
15 *
16 * setDefaultView 设置默认的标注位置，一般用地理位置的拼音来
17 * 指定，如shanghai
18 *
19 * ezmarker.setValue 也可以使用经纬度坐标来标注默认位置
20 *
21 */
22 function setMap(point,zoom){
23 document.getElementById( " txtX " ).value = point.getLongitude();
24 document.getElementById( " txtY " ).value = point.getLatitude();
25 document.getElementById( " txtZ " ).value = zoom;
26 }
27 var ezmarker = new LTEZMarker( " ezmarker " );
28 ezmarker.setDefaultView( " shanghai " , 5 );
29 ezmarker.setValue( new LTPoint( 11200000 , 4000000 ), 10 );
30 LTEvent.addListener(ezmarker, " mark " ,setMap); //
31 < / script>
32
33 < / head>
34 < body >
35 < br / ><br / >< br / >
36 X: < input type = " text " id = " txtX " value = "" / ><br / >
37 Y: < input type = " text " id = " txtY " value = "" / ><br / >
38 Z: < input type = " text " id = " txtZ " value = "" / ><br / >
39 < / body>
40 < / html>
41
2 < head >
3 < meta http - equiv = " Content-Type " content = " text/html; charset=UTF-8 " >
4 < title > Untitled Document < / title>
5 < script language = " javascript " src = " jquery-1[1].2.3.min.js " >< / script>
6 < script language = " javascript " src = " http://api.51ditu.com/js/maps.js " >< / script>
7 < script language = " javascript " src = " http://api.51ditu.com/js/ezmarker.js " >< / script>
8 < script language = " JavaScript " >
9
10 /* *
11 * LTEZMarker : 用于显示地图标注
12 * 该操作一般用于采集地理位置经纬度
13 *
14 * LTEvent.addListener 添加一个事件 由哪个标注值来填充数据
15 *
16 * setDefaultView 设置默认的标注位置，一般用地理位置的拼音来
17 * 指定，如shanghai
18 *
19 * ezmarker.setValue 也可以使用经纬度坐标来标注默认位置
20 *
21 */
22 function setMap(point,zoom){
23 document.getElementById( " txtX " ).value = point.getLongitude();
24 document.getElementById( " txtY " ).value = point.getLatitude();
25 document.getElementById( " txtZ " ).value = zoom;
26 }
27 var ezmarker = new LTEZMarker( " ezmarker " );
28 ezmarker.setDefaultView( " shanghai " , 5 );
29 ezmarker.setValue( new LTPoint( 11200000 , 4000000 ), 10 );
30 LTEvent.addListener(ezmarker, " mark " ,setMap); //
31 < / script>
32
33 < / head>
34 < body >
35 < br / ><br / >< br / >
36 X: < input type = " text " id = " txtX " value = "" / ><br / >
37 Y: < input type = " text " id = " txtY " value = "" / ><br / >
38 Z: < input type = " text " id = " txtZ " value = "" / ><br / >
39 < / body>
40 < / html>
41
var ezmarker=new LTEZMarker("ezmarker");
用于地图标注的类
其中setDefaultView("shanghai",5) 方法是用于设置默认标注的位置和放缩比例。方法前面的参数是城市或地址位置的拼音或者汉字，后面的是放缩比例。
如果说要默认标注某个经纬度使用 setValue(new LTPoint(11200000,4000000),10)
LTEvent.addListener(ezmarker,"mark",setMap) 是为这个标注添加一个监听事件
