改为:function showLine(destination1,destination2,destination3) { var destinationA=new GLatLng(destination1 *1); var destinationB=new GLatLng(destination2 *1); var destinationC=new GLatLng(destination3 *1); var line1=new GPolyline([destinationA,destinationB],"#C00080", 5); var line2=new GPolyline([destinationB,destinationC],"#C00080", 5);
{
var destinationA=new GLatLng(destination1 *1);
var destinationB=new GLatLng(destination2 *1);
var destinationC=new GLatLng(destination3 *1);
var line1=new GPolyline([destinationA,destinationB],"#C00080", 5);
var line2=new GPolyline([destinationB,destinationC],"#C00080", 5);
//画线
map.addOverlay(line1);
map.addOverlay(line2);
}