Pixel values Google Earth Engine

Question

In Google Earth Engine, is it possible to obtain the pixel values of an image? The following code displays the details of the image and we can see that the image has 10980*10980 pixels for the bands 2,3 and 4. How can we obtain the pixel value of band 3 at the (x,y) pixel or a specific (lat,lon)?

var im1 = ee.Image('COPERNICUS/S2/20160422T084804_20160422T123809_T36TVK')
print(im1)

Answer 1

// Image
var im1 = ee.Image('COPERNICUS/S2/20160422T084804_20160422T123809_T36TVK')

// Point
var p = ee.Geometry.Point(32.3, 40.3)

// Extract the data
var data = im1
.select("B3")
.reduceRegion(ee.Reducer.first(),p,10)
.get("B3")

// Convert to Number for further use
var dataN = ee.Number(data)

// Show data
print(dataN)

// Add Layers
Map.centerObject(im1)
Map.addLayer(im1,{bands:["B4","B3","B2"],min:0,max:5000})
Map.addLayer(p)