Case 2 . subcase 1

by Pavlos Tsagkis

HTML

<link rel="stylesheet" href="https://openlayers.org/en/v3.19.0/css/ol.css">
<script src="https://openlayers.org/en/v3.19.0/build/ol.js"></script>
<div id="map" class="map"></div>
<div id="info">

</div>

JavaScript

var map = new ol.Map({
  layers: [
    new ol.layer.Tile({
      source: new ol.source.OSM()
    })
  ],
  target: 'map',
  view: new ol.View({
    projection:'EPSG:4326',
    center: [0, 0],
    zoom: 2
  })
});

document.getElementById('info').innerHTML = "Map projection--->"+(map.getView().getProjection().getCode());