ECMAScript 6 Concepts

JavaScript is basically ECMAScript at its core but builds upon it. Languages such as ActionScript, JavaScript, and JScript all use ECMAScript as their core. It is essential to understand ECMAScript concepts for a better understanding of the functionality of javascript.

Some of the essential topics of ECMAScript are :

1. Variables and data types: In ECMAScript, you can declare variables using the let, const, or var keywords and there are several data types, including numbers, strings, booleans, and objects.

2. Control structures: Control structures are used to control the flow of a program. ECMAScript supports conditional statements (if/else, switch), loops (for, while, do-while), and more.

3. Functions: Functions are blocks of code that can be called multiple times with different inputs. In ECMAScript, functions are declared using the function keyword, and they can be assigned to variables or passed as arguments to other functions.

4. Objects: Objects are a way to store and organize data in ECMAScript. They are collections of key-value pairs and can contain functions as well.

5. Arrays: Arrays are used to store collections of data in ECMAScript. They are ordered lists of elements and can be accessed using numerical indices.

6. Classes: Classes are a way to create objects with similar properties and methods. They are used to create reusable code and to organize data and behavior.

7. Promises: Promises are used for asynchronous programming in ECMAScript. They represent a value that may not be available yet, and they allow you to handle asynchronous operations more easily.

8. Modules: Modules are used to organize code into separate files and to make it easier to reuse code across multiple projects. ECMAScript has built-in support for modules since ES6.

9. Iterators and Generators: Iterators and generators are used to loop over collections of data in ECMAScript. They are used to create custom iterable objects that can be used in for-of loops.

10. Regular expressions: Regular expressions are patterns used to match and manipulate strings in ECMAScript. They are used for tasks such as input validation and string manipulation.