如何从forEachFeature获取索引

Question

map._clusterLayer.getSource（）。forEachFeature（function（feature）{

//如何获取索引功能？

的console.log（featureIndex）;

}

Answer 1

功能有getId()功能：

map._clusterLayer.getSource().forEachFeature(function(feature) {
  // you may want to set the index depending on other attributes first:
  // feature.setId(feature.get('yourPreferedKeyForIndex'));      
  // get feature index
  var featureIndex = feature.getId();
  console.log(featureIndex);
});