A function together with access to variables of the outer scope where it was created

A function that is called right after declaration and then deleted

A block of code in curly braces that is inaccessible from outside after it runs

JavaScript · Junior · Question 19 of 75

What is a closure?

✓Correct answer: A function together with access to variables of the outer scope where it was created
2A function that is called right after declaration and then deleted
3A block of code in curly braces that is inaccessible from outside after it runs

Explanation

Every JS function remembers the lexical environment where it was created and can read and change its variables even after the outer function finishes. Private data, function factories, memoization and event handlers are built on this.

What is a closure?

Explanation

Further reading

Problem with a question

Test yourself