Tabular comparison of the differences between the var, let, and const keywords in JavaScrip

 Here is a tabular comparison of the differences between the var, let, and const keywords in JavaScript:

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Keyword	Scope	Hoisting	Reassignment
var	Function-scoped	Yes	Allowed
let	Block-scoped	No	Allowed
const	Block-scoped	No	Not allowed

Scope: The scope of a variable determines where it can be accessed in the program. Variables declared with var are function-scoped, which means they can be accessed anywhere within the function they are declared in. Variables declared with let and const are block-scoped, which means they can only be accessed within the block of code in which they are defined.

Hoisting: Hoisting is a JavaScript behavior where variable declarations are moved to the top of their scope before the code is executed. Variables declared with var are hoisted, which means they can be accessed before they are declared. This can sometimes lead to unexpected behavior. Variables declared with let and const are not hoisted.

Reassignment: Reassignment refers to the ability to change the value of a variable after it has been declared. Variables declared with var and let can be reassigned, while variables declared with const cannot be reassigned.

Understanding these differences is important for writing clean and effective JavaScript code. Using the appropriate keyword for each situation can help prevent bugs and improve the overall readability and maintainability of the code.