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. Sum object values
  11. Remove a property from an object
  12. Merge two objects with matching keys
  13. Multiply all object values by x
  14. Swap object keys and values
  15. Replace empty strings in object with null values
  16. Extracting information from objects
  17. Add property to each object in array
  18. Convert array to object with counter