- JScript code
function secRing(){ var secRingCenter = new BMap.Point(118.500272,31.698775); map.clearOverlays(); var secRing = [ new BMap.Point(118.502147,31.697776), new BMap.Point(118.501842,31.697692), new BMap.Point(118.501195,31.697738), new BMap.Point(118.499704,31.697968), new BMap.Point(118.499165,31.698552), new BMap.Point(118.499964,31.699612), new BMap.Point(118.500342,31.699604), new BMap.Point(118.501078,31.69889), new BMap.Point(118.501689,31.698268), new BMap.Point(118.501689,31.698268), ]; //创建多边形 var secRingPolygon = new BMap.Polygon(secRing, {strokeColor: "#ff0000", strokeWeight:2, strokeOpacity:0.5}); map.addOverlay(secRingPolygon);//添加多边形到地图上 map.setViewport(secRingPolygon.getPath()); //调整视野 }如果我想把坐标数据从数据库读取，应该怎么做呢？后台代码是C#写的，下面的代码为什么一直报错，var Num=<%=Num %>;应为表达式
- JScript code
function secRing(){ var secRingCenter = new BMap.Point(118.5129, 31.675991); var Num=<%=Num %>; var secRing=[]; for(var i=0;i<Num/2;i++) { var temp=new BMap.Point(boundaryDatas[2*i],boundaryDatas[2*i+1]); secRing.push(temp); } var secRingPolygon = new BMap.Polygon(secRing, {strokeColor:"blue", strokeWeight:3, strokeOpacity:0.5}); map.addOverlay(secRingPolygon);//添加多边形到地图上 map.setViewport(secRingPolygon.getPath()); //调整视野 }------解决方案--------------------------------------------------------
可以通过jquery对应功能读取，可以用类似这样的代码读取
//返回DataSet(XML)
$(document).ready(function() {
$('#btn5').click(function() {
$.ajax({
type: "POST",
url: "WebService1.asmx/GetDataSet",
data: "{}",
dataType: 'xml', //返回的类型为XML ，和前面的Json，不一样了
success: function(result) {
//演示一下捕获
try {
$(result).find("Table1").each(function() {
$('#dictionary').append($(this).find("ID").text() + " " + $(this).find("Value").text());
});
}
catch (e) {
alert(e);
return;
}
},
error: function(result, status) { //如果没有上面的捕获出错会执行这里的回调函数
if (status == 'error') {
alert(status);
}
}
});
});
});
------解决方案--------------------------------------------------------
可以写到 aspheddinFiled中 JS读取VALUE