select event for getting coordinate in openlayers3 - openlayers-3

Question

I would like you use select interaction to add a feature, but the e.coordinate shows undefined.
var select = new ol.interaction.Select({
style: new ol.style.Style({
stroke: new ol.style.Stroke({
color: '#0288D1',
width: 2
})
})
});
map.addInteraction(select);
select.on('select', function(e) {
var feat = new ol.Feature({
geometry: new ol.geom.Point(e.coordinate),
style: style1
});
alert(e.coordinate);
feat.setStyle(style1);
layerVector.getSource().addFeature(feat);
});
If someone know the reason, tell me how to get the coordinate when i click on viewer with this select interaction.

Answer 1

UPDATE
What you ask in comments (about listeners) can be easier if you become a friend of API Docs. In my beginning it was very hard to know them all, but the docs are much, much better so let it be your source.
Each part of OpenLayers has its own listeners, so, for instance, click at ol.Map, scroll to the "Fires:" section and you'll see the several listeners, the same with ol.View and so forth.
To get clicked coordinate inside ol.interaction.Select listener use:
select.on('select', function(evt){
var coord = evt.mapBrowserEvent.coordinate;
console.info(coord);
// ...
});