从Leaflet.js获取地图坐标? [英] Getting map coordinates from Leaflet.js?

问题描述

我正在尝试使用Leaflet获取用户右键单击某处的地图坐标.我一直在学习Leaflet API，到目前为止，我已经发现我需要监听contextmenu事件并使用mouseEventToLatLng

I'm trying to use Leaflet to get the map coordinates of somewhere a user has right clicked. I've been going through the Leaflet API and so far I've figured out that I need to listen to the contextmenu event and use mouseEventToLatLng method to get the coordinates when clicked. However, when I go through and debug my code I'm not seeing an accessible latLng variable anywhere. Did I miss understand something in the API?

function setMarkers() {
        document.getElementById("transitmap").addEventListener("contextmenu", function( event ) {
            // Prevent the browser's context menu from appearing
            event.preventDefault();

            var coords = L.mouseEventToLatLng( event );
        });
    };

推荐答案

您想要获得的是 mousemove 事件.基本上，这就是您的操作方式，

What you want to get is mousemove event. This is basically how you do it,

var lat, lng;

map.addEventListener('mousemove', function(ev) {
   lat = ev.latlng.lat;
   lng = ev.latlng.lng;
});

document.getElementById("transitmap").addEventListener("contextmenu", function (event) {
    // Prevent the browser's context menu from appearing
    event.preventDefault();

    // Add marker
    // L.marker([lat, lng], ....).addTo(map);
    alert(lat + ' - ' + lng);

    return false; // To disable default popup.
});

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