Question

我正在使用谷歌Geocode api来循环和地理编码22个邮政编码的列表并将它们存储到数据库中。我想在地理编码完成时显示一条消息，但是由于我必须使用setTimeout来避免在11个邮政编码中遇到“OVER_QUERY_LIMIT”错误，因此我的消息显示的时间比实际进程要快得多。我怎么解决这个问题？

JS

                function geocodeAddress (postcode) {
                    geocoder.geocode({'address': postcode}, function(results, status) {

                        if (status === 'OK') {
                            var x,
                                resultsLength = results.length;

                            for(x = 0; x < resultsLength; x++) {
                                lat = results[x].geometry.location.lat().toFixed(8);
                                lng = results[x].geometry.location.lng().toFixed(8);
                                //send values to php file
                                sendLatLng(lat, lng);
                            }
                        } 
                        else if (status == 'OVER_QUERY_LIMIT') {
                            //call function again after delay when error is encountered
                            setTimeout(function() {
                                geocodeAddress(postcode);
                            }, 200);
                        }
                        else {
                            console.log('Geocode was not successful: ' + status);
                        } 
                    });
                };

                for (n = 0; n < pstcodeLength; n++) {
                    geocodeAddress(postcodes[n]);
                    //display message after loop is complete
                    if (n === pstcodeLength-1) {
                        console.log('geocoding is complete');
                    }
                }

Answer 1

JUst跟踪完成的数字。获得最大值时，请显示消息。

var cnt = 0;

function geocodeAddress(postcode) {
  geocoder.geocode({
    'address': postcode
  }, function(results, status) {

    if (status === 'OK') {
      var x,
        resultsLength = results.length;

      for (x = 0; x < resultsLength; x++) {
        lat = results[x].geometry.location.lat().toFixed(8);
        lng = results[x].geometry.location.lng().toFixed(8);
        //send values to php file
        sendLatLng(lat, lng);
      }
      cnt++;
    } else if (status == 'OVER_QUERY_LIMIT') {
      //call function again after delay when error is encountered
      setTimeout(function() {
        geocodeAddress(postcode);
      }, 200);
    } else {
      cnt++;
      console.log('Geocode was not successful: ' + status);
    }

    if (cnt === pstcodeLength) {
      console.log('geocoding is complete');
    }
  });
};

如何在涉及setTimeout时完成循环后显示消息？

1 个答案: