Discover the secrets of flying to customized coordinates stored in variables using Leaflet.js

I'm currently working on a fire location tracking website and I'm facing an issue with leaflet.js. As a newcomer to Leaflet, any assistance would be greatly appreciated!

I have a script that successfully retrieves the id of a specific row from a connected SQL table:

var coordinates = [43.855202, 18.417892];//basic location data
var kordinate1 = [43.855202, 18.417892];//same as above
var kordinate;
//code for retrieving specific id below
const Listen = (doc) => {
    return {
        on: (type, selector, callback) => {
            doc.addEventListener(type, (event)=>{
                if(!event.target.matches(selector)) return;
                callback.call(event.target, event);
            }, false);
        }
    }
};


Listen(document).on('click', '.btn', function (e) {
    idoffire = e.target.id - 100;//working properly
    coordinates = document.getElementById(idoffire).innerHTML;//retrieving data from table with specific id, tried different methods like .innerText, .value but no success.
    kordinate1 = coordinates.replace(/\s/g, ',');//table data only separated by spaces, need commas
    kordinate = "[" + kordinate1 + "]"; //formatting for map.flyTo function, problem arises here.
    console.log(kordinate);//kordinate output in console as shown in image below
    map.flyTo(kordinate, 18);//PROBLEM HERE!
});

(ignore the e.target.id - 100, just a method for getting the specific id ;) )

https://i.stack.imgur.com/Z6oSm.png

Thank you in advance for your assistance!

Note: I'm not attempting to retrieve coordinates from user input since they are already stored in the database, making this question different from this one.

Once again, thank you for your help.

Answer №1

The parameter being passed to the flyTo method is a string, which is not compatible with the method's requirements. You need to pass a LatLng object as the first argument. To create one, you can utilize the utility function

L.latLng(number, number, number?)
. Refer to https://github.com/Leaflet/Leaflet/blob/main/src/geo/LatLng.js for more information. Alternatively, JavaScript allows passing an array like [number, number].

If your data is in a stringified format, you can convert it into an array using JSON.parse(coordinates).

...
coordinatesArray = JSON.parse(coordinates);
map.flyTo(coordinatesArray, 18);

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