ES6 Tutorial
Last Updated :
24 Jul, 2025
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ECMAScript 2015, also known as ES6, represents a significant update to the JavaScript language, introducing numerous features that enable more powerful and complex applications. This update provides developers with new syntax and functionalities that streamline the coding process and enhance JavaScript's capabilities.
While ECMAScript and JavaScript are different, they are closely related, with JavaScript being an implementation of the ECMAScript standard.
ECMAScript and Javascript are both different.
Basics
New Features in ES6
3.1 Arrow Function3.2 Spread Operator3.3 loop3.4 Collection3.5 Classes3.6 Promises3.7 Symbol3.8 Rest parameters3.9 Default parameters3.10 String.includes()3.11 string.startsWith()3.12 string.endsWith()3.13 Array.from()3.14 Array.keys()3.15 Array.find()3.16 Array.findIndex()3.17 Number3.18 isFinite() method3.19 isNaN() method3.20 Object enteries() method3.21 JavaScript modules
Advance
Differences
- Difference between ES6 and TypeScript
- Difference between Fetch and Axios for making http requests
- Difference between node.js require and ES6 import and export
- How ReactJS ES6 syntax is different compared to ES5 ?
- Differences between ES6 class and ES5 function constructors
- Difference between ES6 and TypeScript
- Difference between React Components in ES5 and ES6 ?
Miscellaneous
- What are Block Scoped variables and functions in ES6 ?
- How to write a for loop in ES6 ?
- How to define a function in ES6 ?
- How to declare variables in different ways in JavaScript?
- When should one use Arrow functions in ES6 ?
- How to set default parameters in ES6 ?
- What are the states of promises in ES6 ?
- Explain the Generator Function in ES6
- When should we use curly braces for ES6 import ?
- Shorthand Syntax for Object Property Value in ES6
- How to copy properties from one object to another in ES6 ?
- What is blocked scoped variables ES6 ?
- How to use polyfill in JavaScript ?
- What are decorators and how are they used in JavaScript ?
- How to clone array in ES6 ?
- How to convert a plain object into ES6 Map using JavaScript ?
- What is the difference between Map and WeakMap in JavaScript ?
- What are these triple dots (...) in JavaScript ?
- How to check two numbers are approximately equal in JavaScript ?
- How to use Typescript with native ES6 Promises ?
- How to swap variables using destructuring assignment in JavaScript ?
- What is a Destructuring assignment and explain it in brief in JavaScript ?
- Which keywords can be used to implement inheritance in ES6 ?
- How to create a class in ES6 ?
- How to extend some class in ECMAScript 6 ?
- How does await and async works in ES6 ?
- How to filter an array of objects in ES6 ?
- What is the Temporal Dead Zone in ES6 ?
- How to get the first non-null/undefined argument in JavaScript ?
- Explain spread operator in ES6 with an Example
- Explain the Rest parameter in ES6
- What are the template literals in ES6 ?
- How to implement inheritance in ES6 ?
