https://stackoverflow.com › questions › 762011
What is the difference between "let" and "var"? - Stack OverflowThe main difference is scoping rules. Variables declared by var keyword are scoped to the immediate function body (hence the function scope) while let variables are scoped to the immediate enclosing block denoted by { } (hence the block scope).
https://www.javascripttutorial.net › difference-between-var-and-let
Difference Between var and let in JavaScript - JavaScript TutorialDifferences Between var and let. Summary: in this tutorial, you will learn about the differences between the var and let keywords. #1: Variable scopes. The var variables belong to the global scope when you define them outside a function. For example: var counter; Code language: JavaScript (javascript)
https://www.geeksforgeeks.org › difference-between-var-and-let-in-javascript
Difference between var and let in JavaScript - GeeksforGeeksThe let keyword in JavaScript is used to make variables that are scoped to the block they're declared in. Once you've used let to define a variable, you cannot declare it again within the same block. It's important to declare let variables before using them. The let keyword was introduced in the ES6 or ES2015 version of JavaScript. It's usually rec
https://www.programiz.com › javascript › let-vs-var
JavaScript let Vs var (with Examples) - ProgramizIn JavaScript, both the keywords var and let are used to declare variables. The let keyword was introduced in the later version of JavaScript known as ES6(ES2015) . And it's the preferred way to declare variables.
https://www.freecodecamp.org › news › var-let-and-const-whats-the-difference
Var, Let, and Const – What's the Difference? - freeCodeCamp.orgvar variables can be updated and re-declared within its scope; let variables can be updated but not re-declared; const variables can neither be updated nor re-declared. They are all hoisted to the top of their scope.
https://www.w3schools.com › JS › js_let.asp
JavaScript Let - W3SchoolsThe let keyword was introduced in ES6 (2015) Variables declared with let have Block Scope. Variables declared with let must be Declared before use. Variables declared with let cannot be Redeclared in the same scope.
https://developer.mozilla.org › en-US › docs › Web › JavaScript › Reference › Statements › let
let - JavaScript | MDN - MDN Web DocsThe let declaration declares re-assignable, block-scoped local variables, optionally initializing each to a value.
https://dev.to › man0shr0y › understanding-the-key-differences-let-vs-var-in-javascript...
Understanding the Key Differences: 'let' vs 'var' in JavaScript ...When working with variables in JavaScript, you have two main options: the let and var keywords. While they may seem similar at first glance, there are some important differences to be aware of. In this blog post, we will explore these differences and understand when to use each keyword.
https://masteringjs.io › tutorials › fundamentals › let-vs-var
The Difference Between let and var in JavaScript - Mastering JSThere are two ways to declare a mutable variable in JavaScript: let and var. Here's how they're different, and why you should use let.
https://byby.dev › js-var-vs-let
The differences between "var" and "let" in JavaScriptThe main difference between var and let in JavaScript is that var is function scoped while let is block scoped. This means that a variable declared with var can be accessed anywhere within the function where it is defined, while a variable declared with let can only be accessed within the block where it is defined (such as an if ...
