/mdn-git/developer.mozilla.org/en-US/docs/Learn/JavaScript/ObjectsObjects
Adding_bouncing_balls_features Basics Classes_in_JavaScript JSON Object-oriented_programming Object_building_practice Object_prototypes Test_your_skills:_JSON Test_your_skills:_Object-oriented_JavaScript Test_your_skills:_Object_basics
/mdn-git/developer.mozilla.org/en-US/docs/Learn/JavaScript/Objects/Adding_bouncing_balls_featuresAdding_bouncing_balls_features
/mdn-git/developer.mozilla.org/en-US/docs/Learn/JavaScript/Objects/JSONJSON
/mdn-git/developer.mozilla.org/en-US/docs/Learn/JavaScript/Objects/Object_building_practiceObject_building_practice
/mdn-git/developer.mozilla.org/en-US/docs/Learn/JavaScript/Objects/Object_prototypesObject_prototypes