JAVASCRIPT

leaflet tile service

var wmsLayer = L.tileLayer.wms('https://demo.boundlessgeo.com/geoserver/ows?', {
    layers: 'nasa:bluemarble'
}).addTo(map);

leaflet tile

L.tileLayer('https://{s}.tile.openstreetmap.org/{z}/{x}/{y}.png?{foo}', {foo: 'bar', attribution: '&copy; <a href="https://www.openstreetmap.org/copyright">OpenStreetMap</a> contributors'}).addTo(map);

leaflet tile

L.tileLayer('https://{s}.tile.openstreetmap.org/{z}/{x}/{y}.png?{foo}', {foo: 'bar', attribution: '&copy; <a href="https://www.openstreetmap.org/copyright">OpenStreetMap</a> contributors'}).addTo(map);