leaflet地图在选项卡中不正常显示

可以在选项卡中加个click事件，调用下

<a href="#tab1" >tab1</a>
<a href="#tab2" onclick="$.expandMap();">tab2</a>

var map = null;
$(function(){
    //加载gis地图
    var southWest = L.latLng(*, *),
        northEast = L.latLng(*, *),
        bounds = L.latLngBounds(southWest, northEast);

    map = L.map('ExampleMap', {
        zoomControl: true,
        attributionControl: false,//隐藏copyright
        maxBounds: bounds,
        minZoom: 9,
        maxZoom: 12,
        invalidateSize:true
    }).setView([*, *], 9);
    console.log('test');
    new L.TileLayer.TileLoad('./maps/NJBaseMap').addTo(map);
})

$.expandMap = function()    {
    L.Util.requestAnimFrame(map.invalidateSize,map,!1,map._container);
}