我目前正在尝试学习反应,我想使用传单地图(react-leaflet)。
我有两个(点,多边形)GeoJson 对象要显示,它们正在工作,但我想替换默认标记图标。
传单文档http://leafletjs.com/examples/geojson/告诉我使用 pointToLayer 选项。
代码:
onEachFeaturePoint, onEachfeaturePolygon, pointToLayer
onEachFeaturePoint(feature, layer) {
console.log('feature: ', feature);
console.log('layer: ', layer);
layer.on({
'click': function (e) {
console.log('e: ', e);
console.log('click');
}
})
}
onEachFeaturePolygon(feature, layer) {
console.log('feature: ', feature);
console.log('layer: ', layer);
layer.on({
'click': function (e) {
console.log('e: ', e);
console.log('click');
}
})
}
pointToLayer(feature, latlng) {
console.log('--- Point to layer');
console.log('feature: ', feature);
console.log('latlng: ', latlng);
return <CircleMarker center={latlng} />;
}
使成为
render() {
const center = [9.4921875, 51.83577752045248];
return (
<Map center={center} zoom={1}>
<GeoJSON ref='marker1' data={this.state.point} onEachFeature={this.onEachFeaturePoint.bind(this)} pointToLayer={this.pointToLayer.bind(this)} />
<GeoJSON ref='polygon1' data={this.state.polygon} onEachFeature={this.onEachFeaturePolygon.bind(this)} />
</Map>
)
}
如果我保持pointToLayer={this.pointToLayer.bind(this)}
它停止工作并出现以下错误:
Uncaught TypeError: layer.on is not a function
at CustomMarker.onEachFeaturePoint (MapDemo.js:73)
at NewClass.addData (leaflet-src.js:10455)
at NewClass.addData (leaflet-src.js:10435)
at NewClass.initialize (leaflet-src.js:10420)
at new NewClass (leaflet-src.js:310)
at L.geoJSON (leaflet-src.js:10732)
我不知道为什么会发生错误,也许有人知道如何解决这个问题或帮助我理解我犯的错误。
编辑:return <CirleMarker />
通过return L.circleMarker()
在函数中替换pointToLayer
,我让它工作了。