SOURCE

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var map = L.map('map').setView([22.330862,114.076266], 11);
L.tileLayer('https://api.mapbox.com/styles/v1/{id}/tiles/{z}/{x}/{y}?access_token={accessToken}', {
        attribution: '',
        maxZoom: 18,
        id: 'mapbox/streets-v11',
        tileSize: 512,
        zoomOffset: -1,
        accessToken: 'pk.eyJ1IjoieGtxLW5pY2t5IiwiYSI6ImNrYWwza2dqeDBzZ2UycHBlMGkzMHZsdnAifQ.MnUoXOsykU4zAvmzFAurvg'
}).addTo(map);
points.split('\n').forEach(x => {
    if(!x) {
        return;
    }
    const [lng, lat] = x.trim().split(',');
    L.circle([lat, lng], {weight: 2, color: '#FB5151', fillColor: '#FB5151', fillOpacity: '0.2', radius: 1 }).addTo(map);
})


targets = [
    ["皇后大道東80號堅雄商業大廈", "114.174597,22.273853"],
    ["香港湾仔堅拿道西19號", "114.185798,22.274659"],
    ["香港离岛东涌，逸东商场", "113.939622,22.278693"],
]
targets.forEach(x => {
    const [lng, lat] = x[1].trim().split(',');
    L.marker([lat, lng]).addTo(map)
        .bindPopup(x[0])
        .openPopup();
})

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

#map {
  height: 100vh;
  width: 100vw;
}