Google Geocode API的回調函數，返回NULL值

Question

我有geoCode函數，該函數在異步請求完成后使用回調函數執行某些操作。 但是，它返回NULL值。

 function codeAddress(callback) {

    /***** build string address from form data
    var address = addressOne + "," + addressTwo + "," + region + "," + zip + "," + country;
    *****/

    var geocodeAddress = geocoder.geocode( { 'address': address}, function (results, status) { callback( results ) } );

}

codeAddress(function(returnData){
    console.log("results= " + returnData);
    console.log(returnData);
     });

這給出了空數組

Answer 1

var returnData = function () {
         return data;
};

codeAddress (returnData ());

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