Modern JavaScript from the Beginning - Second Edition - Sealing and Freezing Objects

This video tutorial explains the concepts of sealing and freezing objects in JavaScript. Sealing an object prevents new properties from being added or existing ones from being removed, but allows modification of existing properties. Freezing an object locks down all properties, preventing any changes. The video demonstrates these concepts with examples, using methods like Object.seal and Object.freeze, and shows how to check if an object is sealed or frozen using isSealed and isFrozen methods. The tutorial aims to provide a comprehensive understanding of object property management.

What will happen if you try to add a new property to a sealed object?

How does freezing an object affect its properties?

What is the significance of the configurable and writable flags in object properties?