Nov 4, 2025 · A closure is the combination of a function bundled together (enclosed) with references to its surrounding state (the lexical environment). In other words, a closure gives a function access to its …

Jan 16, 2026 · Closures allow a function to keep variables private and accessible only within that function, which is commonly used in modules to protect data from being accessed or modified by …

Closures make it possible for a function to have "private" variables. A closure is created when a function remembers the variables from its outer scope, even after the outer function has finished executing.

Feb 18, 2020 · A closure is the combination of a function and the lexical environment (scope) within which that function was declared. Closures are a fundamental and powerful property of Javascript.

Closures allow JavaScript functions to access variables from their lexical scope even after the parent function has finished. Lexical scoping defines which variables are accessible based on where they …

This tutorial introduces you to the JavaScript closure and shows you how to apply closures in your code more effectively.

2 days ago · Key Takeaways A closure is a function combined with its lexical environment—the variable bindings that existed when the function was created. Closures capture bindings (references), not …