软件工程课堂五（地铁项目的优化）

1 function InitMap(citycode, startname) {
2             subway = new BMapSub.Subway(‘container‘, citycode);
3             subway.setZoom(0.7);
4             var zoomControl = new BMapSub.ZoomControl({
5                 anchor : BMAPSUB_ANCHOR_TOP_LEFT,
6                 offset : new BMapSub.Size(10, 100)
7             });
8             subway.addControl(zoomControl);

 1 </div>
 2 
 3     <div id="container"></div>
 4     <script type="text/javascript">
 5         var list = BMapSub.SubwayCitiesList;
 6         var subway;
 7         $(function() {
 8             InitSelect(list);//初始化城市选择框
 9             InitMap(150, null);
10 
11         });
12         //城市选择框改变事件，用于城市地图切换
13         $("#city").change(function() {
14             //var a =  $("#city :selected").text();
15             //console.log(a);
16             InitMap($("#city").val(), null);
17         });
18         //初始化城市选择框
19         function InitSelect(list) {
20             for ( var key in list) {
21                 var obj = document.getElementById("city");
22                 var option = document.createElement("option");//创建option节点  
23                 option.innerText = list[key].name;
24                 option.value = list[key].citycode;
25                 obj.appendChild(option);
26             }
27         };