What is a closure in JavaScript?
- A closure is a built-in JavaScript function
- A closure is a function that has access to the variables from its containing function, even after the containing function has finished executing.
- A closure is a special type of variable in JavaScript
- A closure is a function that is defined within another function.
A closure in JavaScript is a function that has access to the variables from its containing function, even after the containing function has finished executing. This is a fundamental concept in JavaScript for maintaining data encapsulation and is often used for creating private variables and functions.
Loading...
Related Quiz
- How does parameterized query help in preventing SQL Injection attacks?
- When an EventEmitter instance experiences an error, the typical event that is emitted is ______.
- When creating a custom error class in Express.js, it should extend the built-in ______ class.
- What is the default behavior of Express when an error occurs in a middleware?
- Which of the following is a common use case for OAuth?