javascript - 谷歌海拔没有 map 显示

Question

我需要获取给定纬度、经度的海拔剖面图。我使用下面的代码。然而这段代码给出了错误的输出。我已经将其与在线谷歌地图结果进行了比较。

function elevationVal(event) 
       {
         var lat = xval passed ;
         var lng = yval passed ;


        var altitudes = [];
        var locations = [];
        var latlng1 = new google.maps.LatLng(lat,lng);
        locations.push(latlng1);
         var positionalRequest = {
            'locations': locations
         }
         elevator = new google.maps.ElevationService();
         elevator.getElevationForLocations(positionalRequest, function(results, status) {
         var seaLvl  = results[0].elevation;
         eval01.setValue(seaLvl);
         if (status == google.maps.ElevationStatus.OK) {

          // Retrieve the first result
          if (results[0]) {
            var seaLvl = altitudes.push(results[0].elevation.toFixed(3));
             var eleval= results[0].elevation;
          } 
          else {
            alert("No results found");
          }
        } else {
          alert("Elevation SERVICE FAILED due to: " + status);
        }
      });
}

seaLvl 或 eleval 都没有给出正确的海拔值。如果有人在没有 map 的情况下开发了代码，请帮助我。

谢谢，RB

Answer 1

我做了一个 jsfiddle 来尝试，它工作正常:http://jsfiddle.net/OxyDesign/0sgoqqco/

结果与 Google 演示中一样好:https://developers.google.com/maps/documentation/javascript/examples/elevation-simple

$(document).ready(function(){
    $('#button').on('click',function(){
        var elevator = new google.maps.ElevationService(),
            denali = new google.maps.LatLng($('[name=lat]').val(), $('[name=lng]').val()),
            positionalRequest = {'locations':[denali]};

        elevator.getElevationForLocations(positionalRequest, function(results, status) {
            if (status == google.maps.ElevationStatus.OK) {
                if (results[0]) {
                    $('#result').text(results[0].elevation);
                } else {
                    alert("No results found");
                }
            } else {
                alert("Elevation service failed due to: " + status);
            }
        });
    });
});

我没有制作 map

可能是我没理解问题