永远无法解决的javascript Promise问题

问：

我创建了两个自定义承诺，除了它们适用于不同的用户输入之外，它们完全相同。 这两个承诺都使用了 Google Maps API v-3 类和方法。

奇怪的是，每当调用第一个时，它永远不会解析，并且总是返回拒绝状态。 此外，即使它没有解决，promise 代码仍将在我作为控件的几个控制台中执行打印。console.log()

所以这两个是承诺：

var checkingDeparture = new Promise((resolve, reject) => {
    console.log('1. checkingDeparture called');  //first function control
    var newDeparture = '';
    var geocoder = new google.maps.Geocoder();
        
    geocoder.geocode({'address': $('#startTransfer').val()}, (results, status) => {
        console.log('2. checkingDeparture geocoder called');   //second function control
        if(status == google.maps.GeocoderStatus.OK) {
            coordPoint = new google.maps.LatLng(results[0].geometry.location.lat(), results[0].geometry.location.lng());
                
            if(google.maps.geometry.poly.containsLocation(coordPoint, window.venicePolygon)) {
                console.log('3. checkingDeparture containsLocation called');   //third function control
                newDeparture = 'Piazzale Roma, Venezia, VE, Italia';
            }
            else {
                newDeparture = $('#startTransfer').val();
            }
        }
            
        console.log(newDeparture);   //function result control
        resolve(newDeparture);
    });
        
    reject('Sorry there was an error with checkingDeparture promise...');
});
    
var checkingDestination = new Promise((resolve, reject) => {
    console.log('1. checkingDestination called');   //first function control
    var newDestination = '';
    var geocoder = new google.maps.Geocoder();
        
    geocoder.geocode({'address': $('#endTransfer').val()}, (results, status) => {
        console.log('2. checkingDestination geocoder called');   //second function control
        if(status == google.maps.GeocoderStatus.OK) {
            coordPoint = new google.maps.LatLng(results[0].geometry.location.lat(), results[0].geometry.location.lng());
                
            if(google.maps.geometry.poly.containsLocation(coordPoint, window.venicePolygon)) {
                console.log('3. checkingDestination containsLocation called');   //third function control
                newDestination = 'Piazzale Roma, Venezia, VE, Italia';
            }
            else {
                newDestination = $('#endTransfer').val();
            }
        }
            
        console.log(newDestination);   //function result control
        resolve(newDestination);
    });
        
    reject('Sorry there was an error with checkingDestination promise...');
});

这就是他们被召唤的地方：

var checkedDeparture = checkingDeparture;
var checkedDestination = checkingDestination;
    
Promise.all([checkedDeparture, checkedDestination]).then(() => {
    console.log(checkedDeparture + checkedDestination);   //promise values control
    var request = {
        origin: checkedDeparture,
        destination: checkedDestination,
        travelMode: google.maps.TravelMode.DRIVING,
        unitSystem: google.maps.UnitSystem.METRIC
    };
        
    directionsService.route(request, (result, status) => {
        console.log('4. checking value of origin: ' + request.origin);   //fourth function control
        console.log('5. checking value of destination:' + request.destination);   //fifth function control
        console.log('6. directionsService called');   //sixth function control
        if(status == google.maps.DirectionsStatus.OK) {
            //do things
        }
            
        else {
            directionsDisplay.setDirections({routes: []});
            theMap.setCenter(window.globalCenter);
        }
    });
}).catch(e => {
    console.log(e);
});

我看不出错误实际在哪里，因为似乎可以正确解决。此外，由于从不解析（但仍会执行），因此不会执行所有链接的代码部分。checkingDestinationcheckingDeparture.then()