javascript 如何在传单中批量添加标记？

How to add markers bulk in leaflet?

提问by Egor Sazanovich

I have an array with ~30k elements and I need to create map with markers for each of them. I use markerclusters and trying to optimize adding moment.

我有一个包含 ~30k 个元素的数组，我需要为每个元素创建带有标记的地图。我使用标记集群并尝试优化添加时刻。

for (var i = 0; i < myItems.length; i++) {
    var item = myItems[i];

    marker = new L.marker([item[2],item[3]], {
        icon: mapOpts.myIcon
    }).bindPopup(item[1]);

    markers.addLayer(marker);

}

Even Google Chrome takes about 40 sec to do this loop. I don't want to see FF's result.

即使是谷歌浏览器也需要大约 40 秒来完成这个循环。我不想看到FF的结果。

Is there any way to optimize adding many elements to map?

有什么方法可以优化向地图添加许多元素？

采纳答案by L. Sanna

var array = [];

for (var i = 0; i < myItems.length; i++) {
    var item = myItems[i];

    marker = new L.marker([item[2],item[3]], {
        icon: mapOpts.myIcon
    }).bindPopup(item[1]);

    array.push(marker);
}

markers.addLayers(array);

See the docsfor more details.

有关更多详细信息，请参阅文档。

回答by malhal

var markerArray = [];
markerArray.push(L.marker([51.505, -0.09]));
...
var group = L.featureGroup(markerArray).addTo(map);
map.fitBounds(group.getBounds());