eaflet.js map with line and options v1

An example of a map presented with leaflet.js and incorperating a polyline with a a range of options.

This graph is part of the code samples for the update to the book Leaflet Tips and Tricks to version 1 of leaflet.js.

<!DOCTYPE html>
<html>
<head>
    <title>Simple Leaflet Map</title>
    <meta charset="utf-8" />
    <link rel="stylesheet" href="https://unpkg.com/leaflet@1.6.0/dist/leaflet.css"
          integrity="sha512-xwE/Az9zrjBIphAcBb3F6JVqxf46+CDLwfLMHloNu6KEQCAWi6HcDUbeOfBIptF7tcCzusKFjFw2yuvEpDL9wQ=="
          crossorigin=""/></head>
<body>
    <div id="map" style="width: 600px; height: 400px"></div>

var polyline = L.polyline([
            [-41.286, 174.796],
            [-41.281, 174.786],
            [-41.279, 174.776],
            [-41.290, 174.775],
            [-41.292, 174.788]
            ],
            {
                color: 'red',
                weight: 10,
                opacity: .7,
                dashArray: '20,15',
                lineJoin: 'round'
            }
            ).addTo(map);

</script>
</body>
</html>