The isExtensible() Method in JavaScript Objects
In JavaScript, the isExtensible() method is used to determine if new properties can be added to an object. This method checks the extensibility of an object, which means if it can be modified to add new properties or not. By default, any object in JavaScript is extensible unless it has been used as an argument to certain methods like Object.freeze(), Object.seal(), or Object.preventExtensions(). These methods restrict the modification capabilities of an object....