Description: The ‘Object.isExtensible’ method is a function in JavaScript that allows you to determine whether an object is extensible, meaning whether new properties can be added to it. This method returns a boolean value: ‘true’ if the object is extensible and ‘false’ if it is not. An object is considered non-extensible if it has been sealed (using ‘Object.seal’) or frozen (using ‘Object.freeze’), which prevents the addition of new properties. The extensibility of an object is an important aspect of programming, as it allows for controlling the mutability of objects and managing their structure more effectively. This method is useful for checking the state of an object before attempting to modify it, which can help prevent errors in code and maintain data integrity. In summary, ‘Object.isExtensible’ is a valuable tool for developers seeking more precise control over object manipulation in JavaScript.
