functioncalcRoute(){varstart=document.getElementById("start_").value;varend=document.getElementById("end_").value;varrequest={origin:start,destination:end,travelMode:google.maps.TravelMode.DRIVING};directionsService.route(request,function(response,status){if(status==google.maps.DirectionsStatus.

您好，我正在尝试使用javascript在两个标记之间绘制路线图。我已经尝试了在网上找到的各种示例，但在尝试不同的示例时我的map没有加载。我无法找出错误的原因。我的map无法加载。我正在尝试为以下两个标记绘制路线。functionmapLocation(){vardirectionsDisplay;vardirectionsService=newgoogle.maps.DirectionsService();varmap;functioninitialize(){directionsDisplay=newgoogle.maps.DirectionsRenderer();varchic

vardirectionsService=newgoogle.maps.DirectionsService();vardirectionsDisplay=newgoogle.maps.DirectionsRenderer();varstartMarker=newgoogle.maps.Marker({position:start,map:map,icon:'start.png'});varstopMarker=newgoogle.maps.Marker({position:stop,map:map,icon:'stop.png'});directionsDisplay.setMap(m

vardirectionsService=newgoogle.maps.DirectionsService();vardirectionsDisplay=newgoogle.maps.DirectionsRenderer();varstartMarker=newgoogle.maps.Marker({position:start,map:map,icon:'start.png'});varstopMarker=newgoogle.maps.Marker({position:stop,map:map,icon:'stop.png'});directionsDisplay.setMap(m