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Scope in JavaScript – Global vs Local vs Block Scope Explained It's a core concept that influences the way you write, organize, and maintain your JavaScript code Global, Local, and Block Scope: JavaScript offers different types of scope, each serving specific purposes Global scope provides broad accessibility, local scope offers isolation, and block scope controls visibility within specific code blocks
Global and local variables in JavaScript - tutkit. com Variables in JavaScript are essential for storing and processing data It is important to understand where these variables are valid and which areas of your code they can access Given the different types of variables – global and local – understanding the “scope” is fundamental Therefore, let's dive in and find out what global and local variables are all about