The 'Object.seal' method in JavaScript is used to prevent new properties from being added to an object while allowing modification of existing properties. It also marks all existing properties as non-configurable, meaning their descriptors cannot be changed, nor can they be deleted.

Object.seal

Object.seal method

JavaScript is a versatile, high-level programming language primarily used for enhancing interactivity and functionality of web pages. It is an essential component of the web development triad, alongside HTML and CSS, and is supported by all modern web browsers without the need for plugins.

JavaScript

Prevent new properties

Modification of existing properties

Non-configurable properties

Property descriptors in Python provide a way to customize access and modification of object attributes by allowing the definition of getter, setter, and deleter methods. They facilitate encapsulation and data hiding, helping to implement robust attribute management within classes.

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