async function getGpsData() { return await fetch('/gpsdata') } document.addEventListener('DOMContentLoaded', () => { const map = L.map('map').setView([0, 0], 2); L.tileLayer('https://{s}.tile.openstreetmap.org/{z}/{x}/{y}.png', { attribution: '© <a href="https://www.openstreetmap.org/copyright">OpenStreetMap</a> contributors' }).addTo(map); getGpsData().then((response) => { if (!response.ok) { throw new Error(`Response status: ${response.status}`); } response.json().then((gpsData) => { console.log(gpsData); gpsData.forEach(point => { L.marker([point.latitude, point.longitude]).addTo(map) .bindPopup(`Latitude: ${point.latitude}, Longitude: ${point.longitude}`) .openPopup(); }); }); }); });