去除小叶层和L.marker方法

我想知道是否有人知道如何或者是否可以在使用此约定添加点后实际删除一层点：

var pointsLayer, someFeatures = [{
            //Hard coded for now
            "type": "Feature",
            "properties": {
                "name": "Company A",
                "show_on_map": true,
                "icon": 'img/violations.png'
            },
            "geometry": {
                "type": "Point",
                "coordinates": [43.22519, -107.69348]
            }
        }, {
            "type": "Feature",
           .
           .
           .
   }];
for(w=0; w < someFeatures.length; w++){
                pointsLayer = L.marker(someFeatures[w].geometry.coordinates, {icon: violations})   
                    .bindPopup("Company: "+someFeatures[w].properties.name);
                    //add map points 
                    map.addLayer(pointsLayer);
            }

典型的removeLayer(pointsLayer);在类似的 for 循环中对我不起作用。但是，这并不意味着没有办法循环。我只是不确定具体如何。我正在尝试添加积分，这是有效的，然后在事件中删除它们（无效）。有任何想法吗？

您可以在单独的图层上添加标记，而不是直接在地图上添加所有标记（即var markers = new L.FeatureGroup();）然后将该图层添加到地图上（map.addLayer(markers);）在循环之外。

例如，

http://jsfiddle.net/9BXL7/ http://jsfiddle.net/9BXL7/

html

<button>remove all markers</button>
<div id="map"></div>

css

html, body, #map {
    width: 100%;
    height: 100%;
    padding: 0;
    margin: 0;
}

js

var cloudmade = L.tileLayer('http://{s}.tile.cloudmade.com/{key}/997/256/{z}/{x}/{y}.png', {
    maxZoom: 18,
    attribution: 'Map data © 2011 OpenStreetMap contributors, Imagery © 2011 CloudMade',
    key: 'BC9A493B41014CAABB98F0471D759707'
});

var map = L.map('map')
    .setView([50.5, 30.51], 15)
    .addLayer(cloudmade);

var markers = new L.FeatureGroup();

function getRandomLatLng(map) {
    var bounds = map.getBounds(),
        southWest = bounds.getSouthWest(),
        northEast = bounds.getNorthEast(),
        lngSpan = northEast.lng - southWest.lng,
        latSpan = northEast.lat - southWest.lat;

    return new L.LatLng(
    southWest.lat + latSpan * Math.random(),
    southWest.lng + lngSpan * Math.random());
}

function populate() {
    for (var i = 0; i < 10; i++) {
        var marker = L.marker(getRandomLatLng(map));
        marker.bindPopup("<p>Lorem ipsum dolor sit amet, consectetuer adipiscing elit. Donec odio. Quisque volutpat mattis eros. Nullam malesuada erat ut turpis. Suspendisse urna nibh, viverra non, semper suscipit, posuere a, pede.</p><p>Donec nec justo eget felis facilisis fermentum. Aliquam porttitor mauris sit amet orci. Aenean dignissim pellentesque.</p>", {
            showOnMouseOver: true
        });
        markers.addLayer(marker);
    }
    return false;
}

map.addLayer(markers);

populate();
function removeAllMarkers(){
    map.removeLayer(markers);
}
document.querySelector('button').onclick=function(){removeAllMarkers()};

如果您需要删除或清除标记层以交换将来使用的点：

markers.clearLayers();