Tanya  Shields

Tanya Shields

1597774380

Introduction to Sets in JavaScript - All You Need to Know

Sets are a new object type introduced in ES6 (ES2015). Although they are lesser known, they can be very useful and powerful. This tutorial will help you learn all you need to know about them. You will learn about what sets in JavaScript are, how they work and how to use them.

Introduction to sets

Sets are a new object type that was introduced to JavaScript with ES6 (ES2015). What sets allow you to do is to create collections of values. These values can be anything, from  numbers and  strings to  arrays and  objects. This doesn’t sound like something exciting. You can do the same thing with arrays.

The thing about sets, and where they differ from arrays, is that they can contain only unique values. When you try to add multiple same values into a set it will accept only the first. Any subsequent same value will be ignored. This also applies to values such as  null and undefined. Each will be added only once.

This is one of the reasons why JavaScript developers sometimes choose sets over arrays. When you want to create a collection of some values, and you need all values to be unique, sets are the easiest option.

#javascript #web design #web development

What is GEEK

Buddha Community

Introduction to Sets in JavaScript - All You Need to Know

Introduction With Basic JavaScript

The world’s most misunderstood programming language is JavaScript but JavaScript is now used by an incredible number of high-profile applications. So, it’s an important skill for any web or mobile developer to enrich the deeper knowledge in it.

Unlike most programming languages, the JavaScript language has no concept of input or output. It is designed to run as a scripting language in a host environment, and it is up to the host environment to provide mechanisms for communicating with the outside world.

Its syntax is based on the Java and C languages — many structures from those languages apply to JavaScript as well. JavaScript supports object-oriented programming with object prototypes, instead of classes. JavaScript also supports functional programming — because they are objects, functions may be stored in variables and passed around like any other object.

Let’s start off by looking at the building blocks of any language: the types. JavaScript programs manipulate values, and those values all belong to a type. JavaScript’s types are:

· Number

· String

· Boolean

· Function

· Object

· Symbol

and undefined and null, which are … slightly odd. And Array, which is a special kind of object. Date and RegExp, which are objects that you get for free. And to be technically accurate, functions are just a special type of object. So the type of diagram looks like this:

#beginner-javascript #javascript #javascript-introduction #javascript-fundamental #basic-javascritp

Coy  Roberts

Coy Roberts

1603267784

Introduction to Sets in JavaScript - All You Need to Know

Sets are a new object type introduced in ES6 (ES2015). Although they are lesser known, they can be very useful and powerful. This tutorial will help you learn all you need to know about them. You will learn about what sets in JavaScript are, how they work and how to use them.

Introduction to sets

Sets are a new object type that was introduced to JavaScript with ES6 (ES2015). What sets allow you to do is to create collections of values. These values can be anything, from numbers and strings to arrays and objects. This doesn’t sound like something exciting. You can do the same thing with arrays.

The thing about sets, and where they differ from arrays, is that they can contain only unique values. When you try to add multiple same values into a set it will accept only the first. Any subsequent same value will be ignored. This also applies to values such as null and undefined. Each will be added only once.

This is one of the reasons why JavaScript developers sometimes choose sets over arrays. When you want to create a collection of some values, and you need all values to be unique, sets are the easiest option.

Creating sets in JavaScript

When you want to create sets in JavaScript you do it always with the set constructor set(), preceded by the new keyword. This will create new Set object.

// Create new empty set
const mySet = new Set()

#javascript #sets

Rahul Jangid

1622207074

What is JavaScript - Stackfindover - Blog

Who invented JavaScript, how it works, as we have given information about Programming language in our previous article ( What is PHP ), but today we will talk about what is JavaScript, why JavaScript is used The Answers to all such questions and much other information about JavaScript, you are going to get here today. Hope this information will work for you.

Who invented JavaScript?

JavaScript language was invented by Brendan Eich in 1995. JavaScript is inspired by Java Programming Language. The first name of JavaScript was Mocha which was named by Marc Andreessen, Marc Andreessen is the founder of Netscape and in the same year Mocha was renamed LiveScript, and later in December 1995, it was renamed JavaScript which is still in trend.

What is JavaScript?

JavaScript is a client-side scripting language used with HTML (Hypertext Markup Language). JavaScript is an Interpreted / Oriented language called JS in programming language JavaScript code can be run on any normal web browser. To run the code of JavaScript, we have to enable JavaScript of Web Browser. But some web browsers already have JavaScript enabled.

Today almost all websites are using it as web technology, mind is that there is maximum scope in JavaScript in the coming time, so if you want to become a programmer, then you can be very beneficial to learn JavaScript.

JavaScript Hello World Program

In JavaScript, ‘document.write‘ is used to represent a string on a browser.

<script type="text/javascript">
	document.write("Hello World!");
</script>

How to comment JavaScript code?

  • For single line comment in JavaScript we have to use // (double slashes)
  • For multiple line comments we have to use / * – – * /
<script type="text/javascript">

//single line comment

/* document.write("Hello"); */

</script>

Advantages and Disadvantages of JavaScript

#javascript #javascript code #javascript hello world #what is javascript #who invented javascript

Hire Dedicated JavaScript Developers -Hire JavaScript Developers

It is said that a digital resource a business has must be interactive in nature, so the website or the business app should be interactive. How do you make the app interactive? With the use of JavaScript.

Does your business need an interactive website or app?

Hire Dedicated JavaScript Developer from WebClues Infotech as the developer we offer is highly skilled and expert in what they do. Our developers are collaborative in nature and work with complete transparency with the customers.

The technology used to develop the overall app by the developers from WebClues Infotech is at par with the latest available technology.

Get your business app with JavaScript

For more inquiry click here https://bit.ly/31eZyDZ

Book Free Interview: https://bit.ly/3dDShFg

#hire dedicated javascript developers #hire javascript developers #top javascript developers for hire #hire javascript developer #hire a freelancer for javascript developer #hire the best javascript developers

Niraj Kafle

1589255577

The essential JavaScript concepts that you should understand

As a JavaScript developer of any level, you need to understand its foundational concepts and some of the new ideas that help us developing code. In this article, we are going to review 16 basic concepts. So without further ado, let’s get to it.

#javascript-interview #javascript-development #javascript-fundamental #javascript #javascript-tips