Javascript Objects

This series of challenges tests your knowledge about Javascript objects.

Next Challenge

  1. Accessing object properties one
  2. Accessing object properties two
  3. Accessing object properties three
  4. Check if property exists in object
  5. Check if property exists in object and is truthy
  6. Creating Javascript objects one
  7. Creating Javascript objects two
  8. Creating Javascript objects three
  9. Extract keys from Javascript object
  10. Return nested object property
  11. Sum object values
  12. Remove a property from an object
  13. Merge two objects with matching keys
  14. Multiply all object values by x
  15. Swap object keys and values
  16. Replace empty strings in object with null values
  17. Extracting information from objects
  18. Add property to each object in array
  19. Convert array to object with counter