New Features in ES6

Basics

Introduction Environment Setup Top features and syntax Variables Explain Constants in ES6 Void Keyword Decision Making Dialog Boxes Functions handler method Events Trampoline Function...

Objects

Boolean String Operators Modules Math Date Merge Objects...

New Features in ES6

Arrow Function Spread Operator loop Collection Classes Promises Symbol Rest parameters Default parameters String.includes() string.startsWith() string.endsWith() Array.from() Array.keys() Array.find() Array.findIndex() Number isFinite() method isNaN() method Object enteries() method JavaScript modules...

Advance

Define Exception handling in ES6 Debugging Object Literal Array Page Printing Page Redirect Cookies RegEx Validation Image Map HTML DOM Class Variable Alternatives Collection Multimedia Animation Dialog Boxes Import and Export...

Methods

Array filter() Method Array forEach() Method JavaScript at() Method New String Methods...

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 ?...

Extra

All Features of ES2020 with Examples...

FAQs

1. How do arrow function different from regular function? Arrow functions have shorter syntax than regular function. Also, they do not bind “this” from the surrounding. It is bsically shorthand for the regular function. 2. What is template literal in ES6? It is the expression for embeding the HTML or other variable in a string format. It can be used in making multiple lines and string interpolation. It uses backticks(“) for string literal template. 3. What does the spread/rest operator do in ES6? Spread operator is used when there is expectation of more than one parameter in a function. it gives the iterable form of array of multiple elements passed by the function as parameters. While the rest operator uses the same syntax but it collects elements into the array. 4. What is destucturing assignment in ES6? It allows the extraction of values from arrays or properties from the objects of distinct variables. By using this we can assign more than one values to the more than one variables at a same time. 5. What is the purpose of let and cost in ES6? const is used when there is no need to change in value and let is used because of it’s block scope feature that helps in avoiding the hoisting related issues. Both are used to assign a value to the variables but according to thier block and local scope they are according to the need of variable assignment....