let

The let variables are mutable i.e. their values can be changed. It works similar to the var keyword with some key differences like scoping which makes it a better option when compared to var.

Example: This example will illustrate how to declare varibale using the let keyword.

javascript

// let
let name = 'Mukul';
console.log(name); 
// Prints Mukul
 
name = 'Rahul';
console.log(name); 
// Prints Rahul
 
// Trying to declare let variable first and then initialise in another line
let org_name;
org_name = "w3wiki";
console.log(org_name); 
// Prints w3wiki

Output

Mukul
Rahul
w3wiki

Introduction to ES6

ES6 or ECMAScript 2015 is the 6^th version of the ECMAScript programming language. ECMAScript is the standardization of Javascript which was released in 2015 and subsequently renamed as ECMAScript 2015.
ECMAScript and Javascript are both different.

let

javascript

Introduction to ES6

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