将数据保存到数据库中。

// 1. make a mongoose model
const schema = new mongoose.Schema({
  name: {
    type: String,
    default: "Placeholder Location Name"
  },
  coordinates: {
    type: [Number],
    default: [0, 0]
  }
});
const Location = mongoose.model('Location', schema);

// 2. example of making a Location
const exampleLocation = new Location({
  name: "My First Location",
  coordinates: [41.40338, 2.17403] // This is where your example coordinates go.
})

exampleLocation.save((err) => {
  if (err) console.log("An error occured while trying to save: " + err)
  else console.log("Success") // the object is saved
})

捕捉Map上的点击

let map = document.getElementById('your-leaflet-map-id')

map.addEventListener('click', (event) => {
  console.log('The clicked coordinates were: ' + event.latlng.lat + ',' + event.latlng.lng)
  // feel free to use these coordinates as you wish
  yourMethodToSaveLocation(event.latlng.lat, event.latlng.lng)
})