ee.Dictionary.contains

Returns true if the dictionary contains the given key.

UsageReturns
Dictionary.contains(key)Boolean
ArgumentTypeDetails
this: dictionaryDictionary

keyString, default: null

Examples

Code Editor (JavaScript)

// A dictionary (e.g. results of ee.Image.reduceRegion of an S2 image).
var dict = ee.Dictionary({
  B1: 182,
  B2: 219,
  B3: 443
});

print('Dictionary contains key "B1"?', dict.contains('B1'));
print('Dictionary contains key "Band_1"?', dict.contains('Band_1'));