JavaScript Mastery from Zero to Hero - Prepare for Coding Interviews - hasOwnProperty, the in Keyword, and Delete in Jav

The video tutorial covers how to check if a property exists in a JavaScript object using the hasOwnProperty method and the 'in' keyword. It also demonstrates how to delete a property from an object using the delete keyword. The tutorial includes examples with a restaurant object and emphasizes the importance of understanding these methods for handling objects with large amounts of data. The session concludes with a prompt for an upcoming exercise to reinforce the concepts learned.

Explain the significance of using string format when checking for a property in an object.

What is the output when checking for a non-existent property in an object?