JavaScript Scope and Hoisting Explained | JavaScript Bangla Tutorial
JavaScript has two scopes – Global Scope and Function Scope. Any variable declared outside of a function belongs to the global scope, and is therefore accessible from anywhere in your code. Each function has its own scope, and any variable declared within that function is only accessible from that function and any nested functions. Because local scope(function scope) in JavaScript is created by functions, it’s also called function scope. When we put a function inside another function, then we create nested scope.
Currently, JavaScript, unlike many other languages, supports block level scoping with the keyword 'let' and 'const'.
JavaScript Hoisting: Hoisting is a JavaScript mechanism where variables and function declarations are moved to the top of their scope before code execution.
আজকের ক্লাসে আমাদের আলোচনার টপিক ছিলোঃ
• Global Variable with Global Scope
• Local Variable with Local Scope
• What is JavaScript Hoisting?
• Use of let keyword
• Use of const keyword
আগের ক্লাসঃ • General Loops | JavaScript Bangla Tutorial
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