.toArray（）; 不是功能

Question

I have a issue with converting longitute and latitute into a array my code is like this:

<div id="right" class="map">

  <div id='map' class="map" style='width: 100%; height: 100%; margin: 0px;'></div>
  <script>
    mapboxgl.accessToken = 'pk.eyJ1IjoibGl2ZS1vbGRoYW0iLCJhIjoiY2ozbXk5ZDJ4MDAwYjMybzFsdnZwNXlmbyJ9.VGDuuC92nvPbJo-qvhryQg';
    var map = new mapboxgl.Map({
      container: 'map',
      style: 'mapbox://styles/mapbox/streets-v10',
      center: [-1.77, 52.73],
      zoom: 3

    });
    map.addControl(new MapboxGeocoder({
      accessToken: mapboxgl.accessToken
    }));
    map.on('click', function(e) {
      var test = JSON.stringify(e.lngLat);
      test.toArray();
      console.log(test);
      mapboxgl.Marker()
        .setLngLat(test)
        .addTo(map);
    });

test is returning value as:

{"lng":-2.8246875000017155,"lat":52.72999999999914}

However, the value needs to be as:

[-2.8246875000017155, 52.72999999999914]

So toArray should work but I get

Uncaught TypeError: test.toArray is not a function
at e. (1:181)
at e.Evented.fire (evented.js:87)
at h (bind_handlers.js:139)
at HTMLDivElement.s (bind_handlers.js:114)

Edit

map.on('click', function(e) {
  var test = e.lngLat;
  console.log(test);
  test.toArray();
  mapboxgl.Marker()
    .setLngLat(test)
    .addTo(map);
});

But now I get:

Uncaught TypeError: Cannot read property 'bind' of undefined

Answer 1

The issue is you have to create a new marker. If you follow the code in the documentation it should work.

Try the following modification to your code

map.on('click', function (e) {
    new mapboxgl.Marker()
        .setLngLat(e.lngLat)
        .addTo(map);
});

Edit

Nothing will appear as a marker, you have to style that yourself as far as I'm aware, try adding this CSS to see something.

.mapboxgl-marker {
    width: 10px;
    height: 10px;
    background-color: purple;
}

Answer 2

You could try the following:

var longLatArray = [];
longLatArray.push(e.lng);
longLatArray.push(e.lat);
mapboxgl.Marker()
    .setLngLat(longLatArray)
    .addTo(map);