摘要：官網效果腳本地圖中心點昆明地圖縮放層級縮放禁止雙擊放大版權切片圖層地址繪制區域單擊移動清除雙擊移除事件保存方便后面刪除請入名稱鍵盤事件鍵拖動

leaflet官網：http://leafletjs.com/

效果：

腳本：

var map = L.map("map", {
    center: [25.1026993454,102.9312515259], // 地圖中心點(昆明)
    zoom: 16, // 地圖縮放層級
    zoomControl: false, // 縮放
    doubleClickZoom: false, // 禁止雙擊放大
    attributionControl: false // 版權
});
var kmgLayer = L.tileLayer.wms("wms切片圖層地址", {
    layers: "airport:kmg",
    format: "image/jpeg",
    transparent: false
});
map.addLayer(kmgLayer);

// 繪制區域
var layerObj = {};
function drawPolygon() {
    var points = [],
        points_length = 0,
        polyline,
        polygon;
    // 單擊
    var clickFlag,
        clickTimes = 1,
        isDrag = false;
    map.on("mousedown", function(e) {
        map.off("mousemove");
        if(clickFlag) clearTimeout(clickFlag);
        clickFlag = setTimeout(function() {
            if(clickTimes==1 && !isDrag) {
                points.push([e.latlng.lat, e.latlng.lng]);
                points_length = points.length;
                // 移動
                map.on("mousemove", function(e) {
                    // 清除
                    if(polyline) map.removeLayer(polyline);
                    if(polygon) map.removeLayer(polygon);
                    // polyline
                    points[points_length] = [e.latlng.lat, e.latlng.lng];
                    polyline = new L.Polyline(points);
                    map.addLayer(polyline);
                    // polygon
                    polygon = new L.Polygon(points);
                    map.addLayer(polygon);
                });
            }
        }, 300);
    });
    // 雙擊
    map.on("dblclick", function() {
        if(points.length) {
            clickTimes = 2;
            // polyline
            polyline = new L.Polyline(points);
            map.addLayer(polyline);
            // polygon
            polygon = new L.Polygon(points);
            map.addLayer(polygon);
            // 移除事件
            map.off("mousemove");
            setTimeout(function() {
                clickTimes = 1;
                // 保存layer(方便后面刪除)
                var layerName = prompt("請入名稱");
                if(layerName) {
                    layerObj[layerName] = [polyline, polygon];
                    console.log(layerObj);
                }
                points = [];
            }, 300);
        }
    });
    // 鍵盤事件
    $(document).keyup(function(e) {
        if(e.keyCode == 27) {// esc鍵
            if(points.length) {
                map.off("mousemove");
                clickTimes = 1;
                map.removeLayer(polyline);
                map.removeLayer(polygon);
                points = [];
            }
        }
    });
    // 拖動
    map.on("movestart", function() {
        isDrag = true;
    });
    map.on("moveend", function() {
        isDrag = false;
    });
}
drawPolygon();