Static Style

staticstyle.js

// Defining Static Style
let staticStyle = new ol.style.Style({
  // Line and Polygon Style
  stroke: new ol.style.Stroke({
    color: '#0e97fa',
    width: 4
  }),
  fill: new ol.style.Fill({
    color: 'rgba(0, 153, 255, 0.2)'
  }),

  // Point Style
  image: new ol.style.Circle({
    radius: 10,
    fill: new ol.style.Fill({
      color: [0, 153, 255, 1],
    }),
    stroke: new ol.style.Stroke({
      color: [255, 255, 255, 1],
      width: 5
    }),
  })
});

//Set static style for vector layer
vector_layer.setStyle(staticStyle);