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Category: closures

JavaScript Scope and Closures

Scopes and closures are important in JavaScript. But, they were confusing for me when I first started. Here’s an explanation of scopes and closures to help you understand what they are. Let’s start with scopes. Scope A scope in JavaScript defines what variables you have access to. There are two kinds of scope – global scope and local scope. Global scope If a variable is declared outside all functions or curly braces ({}), it is said to be defined in the global scope. This is true only with JavaScript in web browsers. You declare global variables in Node.js differently,...

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