Question

因此，我需要将laravel（$event->latitude和$event->longitude）中的两个变量传递给Javascript，因为我需要将此值用于Google Maps。这些是2个值，例如... latitude：44.4590762经度：26.0967384000000。

所以，我试图做的...

var mylat = {!! json_encode($event->latitude->toArray()) !!};
var mylng = {!! json_encode($event->longitude->toArray()) !!};

or 

var mylat = {!! $event->latitude !!}
var mylng = {!! $event->longitude !!}

但没有结果。我的变量仍然没有值。

这是我的EventController：

$event->longitude = $request['longitude'];
$event->latitude = $request['latitude'];

我的观点：

<div id="map"></div>

我的脚本：

<script>
    var mylat = {!! json_encode($event->latitude->toArray()) !!};
    var mylng = {!! json_encode($event->longitude->toArray()) !!};


function initMap() {
    var map = new google.maps.Map(document.getElementById('map'), {
      center: {lat: mylat, lng: mylng},
      zoom: 18
    });
    var input = document.getElementById('searchInput');
    map.controls[google.maps.ControlPosition.TOP_LEFT].push(input);

    var autocomplete = new google.maps.places.Autocomplete(input);
    autocomplete.bindTo('bounds', map);

    var infowindow = new google.maps.InfoWindow();
    var marker = new google.maps.Marker({
        map: map,
        anchorPoint: new google.maps.Point(0, -29)
    });

    autocomplete.addListener('place_changed', function() {
        infowindow.close();
        marker.setVisible(false);
        var place = autocomplete.getPlace();
        if (!place.geometry) {
            window.alert("Autocomplete's returned place contains no geometry");
            return;
        }

        // If the place has a geometry, then present it on a map.
        if (place.geometry.viewport) {
            map.fitBounds(place.geometry.viewport);
        } else {
            map.setCenter(place.geometry.location);
            map.setZoom(17);
        }
        marker.setIcon(({
            url: place.icon,
            size: new google.maps.Size(71, 71),
            origin: new google.maps.Point(0, 0),
            anchor: new google.maps.Point(17, 34),
            scaledSize: new google.maps.Size(35, 35)
        }));
        marker.setPosition(place.geometry.location);
        marker.setVisible(true);

        var address = '';
        if (place.address_components) {
            address = [
              (place.address_components[0] && place.address_components[0].short_name || ''),
              (place.address_components[1] && place.address_components[1].short_name || ''),
              (place.address_components[2] && place.address_components[2].short_name || '')
            ].join(' ');
        }

        infowindow.setContent('<div><strong>' + place.name + '</strong><br>' + address);
        infowindow.open(map, marker);

        //Location details
        for (var i = 0; i < place.address_components.length; i++) {
            if(place.address_components[i].types[0] == 'postal_code'){
                document.getElementById('postal_code').innerHTML = place.address_components[i].long_name;
            }
            if(place.address_components[i].types[0] == 'country'){
                document.getElementById('country').innerHTML = place.address_components[i].long_name;
            }
        }
        document.getElementById('location').innerHTML = place.formatted_address;
        document.getElementById('lat').innerHTML = place.geometry.location.lat();
        document.getElementById('lon').innerHTML = place.geometry.location.lng();
        document.getElementById('location').innerHTML = place.geometry.location.location();
    });
}
</script>

Answer 1

将bart23:Test:Test:Test存储在javascript变量中使用它。

Answer 2

正确的解决方案是这样的：在我看来，我已经用php制作了变量：

=iif (
len(Fields!LocationDescription.Value) >30,
 ((left(Fields!LocationDescription.Value,30)) & "..."),
 (Fields!LocationDescription.Value)
)

这是我在脚本中的变量：

<?php $latitude =  $event->latitude  ?>
<?php $longitude =  $event->longitude  ?>

Answer 3

控制器方法：

public function index()

{

    $users = User::get();

    return view('users.index', compact('users'));

}

访问JS变量：

<script type="text/javascript">

    var users = {!! json_encode($users) !!};



    console.log(users);

</script>

如何将变量（laravel）传递给javascript？

3 个答案: