What is ES6 and its features?
What are the new features of ES6?
ES6 includes the following new features:
- enhanced object literals.
- template strings.
- default + rest + spread.
- let + const.
- iterators + for..of.
The sixth edition of the ECMAScript standard is ES6 or ECMAScript 6. It is also known as ECMAScript 2015.
Difference between ES5 and ES6.
|Defining Variables||In ES5, we could only define the variables by using the var keyword.||In ES6, there are two new ways to define variables that are let and const.|
Why is ES6 needed?
What ECMAScript 2020?
Could you explain the difference between ES5 and ES6?
Difference between ES5 and ES6 :
|5.||It has a lower performance as compared to ES6.||It has a higher performance than ES5.|
var declarations are globally scoped or function scoped while let and const are block scoped. var 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.
- Popularity. …
- Interoperability. …
- Server Load. …
- Gives the ability to create rich interfaces.
Yes, a lot of things are still coded in ES5 or older, so it’s better to know it too. If you’re working by yourself, ES6-only is totally fine, but when reading other codes or working in collaboration, you will still see a lot of ES5 or older syntax.
What are the classes in JS?
Classes are a template for creating objects. They encapsulate data with code to work on that data. Classes in JS are built on prototypes but also have some syntax and semantics that are not shared with ES5 class-like semantics.
Is ES6 an OOP?