Markers | MapGL | 2GIS Documentation

Markers

To add a single Marker:

const marker = new mapgl.Marker(map, {
    coordinates: [55.31878, 25.23584],
});
<!DOCTYPE html>
<html lang="en">
    <head>
        <meta charset="UTF-8" />
        <meta name="viewport" content="width=device-width, initial-scale=1.0" />
        <title>2GIS Map API</title>
        <meta name="description" content="A single marker example" />
        <style>
            html,
            body,
            #container {
                margin: 0;
                width: 100%;
                height: 100%;
                overflow: hidden;
            }
        </style>
    </head>
    <body>
        <div id="container"></div>
        <script src="https://mapgl.2gis.com/api/js/v1"></script>
        <script>
            const map = new mapgl.Map('container', {
                center: [55.31878, 25.23584],
                zoom: 13,
                key: 'Your API access key',
            });
            const marker = new mapgl.Marker(map, {
                coordinates: [55.31878, 25.23584],
            });
        </script>
    </body>
</html>

To add several markers you need to create Marker instance for each marker in a loop:

const coords = [
    [55.27414804174869, 25.257576991034284],
    [55.289254243403306, 25.211614202468652],
    [55.34418588368302, 25.215341562259866],
    [55.35036569359612, 25.26068195798851],
    [55.32976632814914, 25.238324424362062],
];
coords.forEach((coord) => {
    const marker = new mapgl.Marker(map, {
        coordinates: coord,
    });
});
<!DOCTYPE html>
<html lang="en">
    <head>
        <meta charset="UTF-8" />
        <meta name="viewport" content="width=device-width, initial-scale=1.0" />
        <title>2GIS Map API</title>
        <meta name="description" content="Several markers example" />
        <style>
            html,
            body,
            #container {
                margin: 0;
                width: 100%;
                height: 100%;
                overflow: hidden;
            }
        </style>
    </head>
    <body>
        <div id="container"></div>
        <script src="https://mapgl.2gis.com/api/js/v1"></script>
        <script>
            const map = new mapgl.Map('container', {
                center: [55.31878, 25.23584],
                zoom: 13,
                key: 'Your API access key',
            });
            const coords = [
                [55.27414804174869, 25.257576991034284],
                [55.289254243403306, 25.211614202468652],
                [55.34418588368302, 25.215341562259866],
                [55.35036569359612, 25.26068195798851],
                [55.32976632814914, 25.238324424362062],
            ];
            coords.forEach((coord) => {
                const marker = new mapgl.Marker(map, {
                    coordinates: coord,
                });
            });
        </script>
    </body>
</html>

To change default icon, you can pass icon option with URL:

const marker = new mapgl.Marker(map, {
    coordinates: [55.31878, 25.23584],
    icon: 'https://docs.2gis.com/img/mapgl/marker.svg',
});
<!DOCTYPE html>
<html lang="en">
    <head>
        <meta charset="UTF-8" />
        <meta name="viewport" content="width=device-width, initial-scale=1.0" />
        <title>2GIS Map API</title>
        <meta name="description" content="Change marker icon example" />
        <style>
            html,
            body,
            #container {
                margin: 0;
                width: 100%;
                height: 100%;
                overflow: hidden;
            }
        </style>
    </head>
    <body>
        <div id="container"></div>
        <script src="https://mapgl.2gis.com/api/js/v1"></script>
        <script>
            const map = new mapgl.Map('container', {
                center: [55.31878, 25.23584],
                zoom: 13,
                key: 'Your API access key',
            });
            const marker = new mapgl.Marker(map, {
                coordinates: [55.31878, 25.23584],
                icon: 'https://docs.2gis.com/img/mapgl/marker.svg',
            });
        </script>
    </body>
</html>

To add a marker with a label, you need to pass a label option within MarkerOptions:

const marker = new mapgl.Marker(map, {
    coordinates: [55.31878, 25.23584],
    label: {
        text: "The marker's label",
    },
});
<!DOCTYPE html>
<html lang="en">
    <head>
        <meta charset="UTF-8" />
        <meta name="viewport" content="width=device-width, initial-scale=1.0" />
        <title>2GIS Map API</title>
        <style>
            html,
            body,
            #container {
                margin: 0;
                width: 100%;
                height: 100%;
                overflow: hidden;
            }
        </style>
    </head>
    <body>
        <div id="container"></div>
        <script src="https://mapgl.2gis.com/api/js/v1"></script>
        <script>
            const map = new mapgl.Map('container', {
                center: [55.31878, 25.23584],
                zoom: 13,
                key: 'Your API access key',
            });
            const marker = new mapgl.Marker(map, {
                coordinates: [55.31878, 25.23584],
                label: {
                    text: "The marker's label",
                },
            });
        </script>
    </body>
</html>

To set the label placement you need to pass a label.relativeAnchor and label.offset options within MarkerOptions:

// The right center label placement.
const rightCenter = new mapgl.Marker(map, {
    coordinates: [55.32878, 25.23584],
    icon: '/img/mapgl/marker.svg',
    label: {
        text: 'Right center placement',
        offset: [20, 0],
        relativeAnchor: [0, 0.5],
    },
});
// The left top label placement.
const leftTop = new mapgl.Marker(map, {
    coordinates: [55.30878, 25.22584],
    icon: '/img/mapgl/marker.svg',
    label: {
        text: 'Left top placement',
        offset: [-10, -10],
        relativeAnchor: [1, 1],
    },
});
<!DOCTYPE html>
<html lang="en">
    <head>
        <meta charset="UTF-8" />
        <meta name="viewport" content="width=device-width, initial-scale=1.0" />
        <title>2GIS Map API</title>
        <style>
            html,
            body,
            #container {
                margin: 0;
                width: 100%;
                height: 100%;
                overflow: hidden;
            }
        </style>
    </head>
    <body>
        <div id="container"></div>
        <script src="https://mapgl.2gis.com/api/js/v1"></script>
        <script>
            const map = new mapgl.Map('container', {
                center: [55.31878, 25.23584],
                zoom: 13,
                key: 'Your API access key',
            });
            // The right center label placement,
            const rightCenter = new mapgl.Marker(map, {
                coordinates: [55.32878, 25.23584],
                icon: 'https://docs.2gis.com/img/mapgl/marker.svg',
                label: {
                    text: 'Right center placement',
                    offset: [20, 0],
                    relativeAnchor: [0, 0.5],
                },
            });
            // The left top label placement,
            const leftTop = new mapgl.Marker(map, {
                coordinates: [55.30878, 25.22584],
                icon: 'https://docs.2gis.com/img/mapgl/marker.svg',
                label: {
                    text: 'Left top placement',
                    offset: [-10, -10],
                    relativeAnchor: [1, 1],
                },
            });
        </script>
    </body>
</html>

To add a label with background image to the marker, you need to pass a label.image option within MarkerOptions:

const marker = new mapgl.Marker(map, {
    coordinates: [55.31878, 25.23584],
    label: {
        text: "The marker's label",
        offset: [0, 25],
        relativeAnchor: [0.5, 0],
        image: {
            url: 'tooltip-top.svg',
            size: [100, 50],
            stretchX: [
                [10, 40],
                [60, 90],
            ],
            stretchY: [[20, 40]],
            padding: [20, 10, 10, 10],
        },
    },
});
<!DOCTYPE html>
<html lang="en">
    <head>
        <meta charset="UTF-8" />
        <meta name="viewport" content="width=device-width, initial-scale=1.0" />
        <title>2GIS Map API</title>
        <style>
            html,
            body,
            #container {
                margin: 0;
                width: 100%;
                height: 100%;
                overflow: hidden;
            }
        </style>
    </head>
    <body>
        <div id="container"></div>
        <script src="https://mapgl.2gis.com/api/js/v1"></script>
        <script>
            const map = new mapgl.Map('container', {
                center: [55.31878, 25.23584],
                zoom: 13,
                key: 'Your API access key',
            });
            const marker = new mapgl.Marker(map, {
                coordinates: [55.31878, 25.23584],
                label: {
                    text: "The marker's label",
                    offset: [0, 25],
                    relativeAnchor: [0.5, 0],
                    image: {
                        url: 'https://docs.2gis.com/img/mapgl/tooltip-top.svg',
                        size: [100, 50],
                        stretchX: [
                            [10, 40],
                            [60, 90],
                        ],
                        stretchY: [[20, 40]],
                        padding: [20, 10, 10, 10],
                    },
                },
            });
        </script>
    </body>
</html>

Markers can emit events. You can add handlers for all DynamicObjectEventTable events. For example, a click event handler:

const marker = new mapgl.Marker(map, {
    coordinates: [55.31878, 25.23584],
    icon: 'https://docs.2gis.com/img/mapgl/marker.svg',
});

marker.on('click', (e) => {
    alert('Marker is clicked');
});
<!DOCTYPE html>
<html lang="en">
    <head>
        <meta charset="UTF-8" />
        <meta name="viewport" content="width=device-width, initial-scale=1.0" />
        <title>2GIS Map API</title>
        <meta name="description" content="Markers events handling example" />
        <style>
            html,
            body,
            #container {
                margin: 0;
                width: 100%;
                height: 100%;
                overflow: hidden;
            }
        </style>
    </head>
    <body>
        <div id="container"></div>
        <script src="https://mapgl.2gis.com/api/js/v1"></script>
        <script>
            const map = new mapgl.Map('container', {
                center: [55.31878, 25.23584],
                zoom: 13,
                key: 'Your API access key',
            });
            const marker = new mapgl.Marker(map, {
                coordinates: [55.31878, 25.23584],
                icon: 'https://docs.2gis.com/img/mapgl/marker.svg',
                label: {
                    text: "The marker's label",
                },
            });
            marker.on('click', (e) => {
                alert('Marker clicked');
            });
        </script>
    </body>
</html>