在地图上添加文字图层

// var osmUrl = "../assets/image/riskmap-logo-166x40-2.png";//这里的asdf也可以替换成图片

var osm = new L.TileLayer("asdf", {  zoom: 3,minZoom: 3, maxZoom:18 });
this.map.addLayer(osm);
this.map.setView(new L.LatLng(34, 127),1);
var myIcon24 = L.divIcon({
    html: "
24
"+
      "
小
"+
      "
时
"+
      "
警
"+
      "
戒
"+
      "
线
",
    className: 'my-div-icon',
    iconSize:5,

});
var myIcon48 = L.divIcon({
    html: "
48
"+
        "
小
"+
        "
时
"+
        "
警
"+
        "
戒
"+
        "
线
",
    color:'red',
    className: 'my-div-icon',
    iconSize:5
});
L.marker([34, 127],{icon:myIcon24}).addTo(this.map);
L.marker([30, 132],{icon:myIcon48}).addTo(this.map);

//-webkit-transform:rotate(90deg);把文字旋转90度