Advanced JavaScript (ES6)
If you want to learn web development now, you need to learn JavaScript. It’s the most popular language on the web, and it’s used to create interactive websites and web applications.
JavaScript is a versatile language that you can use on the front-end and back-end of a website. It’s also a popular language for mobile development.
ES6 is the latest version of JavaScript. It’s a major update that includes many new features. ES6 is supported by all major browsers, so you can use it today.
In this article, we’ll introduce you to some of the new features in ES6. We’ll also show you how to use ES6 in your own projects.
Syntax
One of the biggest changes in ES6 is the new syntax. ES6 has a more concise syntax that makes it easier to write code.
For example, the old syntax for declaring a variable is:
var myVariable = “Hello world!”;
The new syntax is:
let myVariable = “Hello world!”;
The let keyword is used to declare variables. It’s similar to the var keyword, but it has some important differences.
The let keyword is block-scoped, which means that it can only be used within the block in which it’s defined. The var keyword is function-scoped, which means that it can be used anywhere in the function.
The const keyword is also block-scoped. It’s used to declare constants. Constants are variables that can’t be changed.
Arrays
The new arrays in ES6 are more powerful and versatile than the old arrays.
The old arrays are limited to a length of up to 2^32 – 1. The new arrays can have a length of up to 2^64 – 1.
The new arrays also have a new syntax. The old syntax is:
var myArray = new Array();
The new syntax is:
let myArray = [];
The brackets [] are used to create arrays.
The new arrays also have a few new methods, including:
push() – Adds an element to the end of the array.
pop() – Removes the
