What are decorators in JavaScript?

What are decorators in JavaScript?

Decorators are a special kind of declaration that can be attached to a class or its members to modify their behavior.

Can you give me an example of how to use a decorator?

Sure! Here's a simple example: you can create a decorator that logs the execution time of a method.

How do I apply that decorator to a method?

You can apply it by prefixing the method with the decorator's name, like this: @logExecutionTime.

Are decorators supported in all JavaScript environments?

Decorators are a stage 2 proposal in JavaScript, so they are not natively supported in all environments yet, but you can use Babel to transpile them.