obj1.js

toucan = {
  lifespan: 20,      // property values can be any type...
  classification: {  // ...including another object
    family: 'ramphastidae',
    genus: 'ramphastos',
    species: 'sulfuratus'
  },
  'call': 'croak'   // quotes usually optional on property name
};
toucan['lifespan']    // => 20
toucan.lifespan       // shortcut when no syntactic ambiguity
toucan.classification.genus       // => 'ramphastos'
toucan.classification['species']  // => 'sulfuratus'