What is Object.freeze in JavaScript?

What is Object.freeze in JavaScript?

Object.freeze is a method that prevents modification of existing property attributes and values in an object.

Can you give me an example of how to use Object.freeze?

Sure! Here's an example:

const obj = { name: 'Alice' };
Object.freeze(obj);
obj.name = 'Bob'; // This will not change the name property
console.log(obj.name); // Outputs: Alice

What happens if I try to add a new property to a frozen object?

If you try to add a new property to a frozen object, it will simply be ignored and the object will remain unchanged.

Are there any ways to unfreeze an object?

No, once an object is frozen using Object.freeze, it cannot be unfrozen. You would need to create a new object if you want to modify it.