5 Features of JavaScript ECMAScript 2017 with Practical Examples

Introduction

JavaScript is one of the powerful and popular programming languages, especially in web development. It is most well-known as the scripting language for web pages. JavaScript was invented by Brendan Eich in 1995 and became an ECMA standard in 1997. ECMAScript is the official name of the language. In addition to that, every new version of the language comes with awesome features that make the development process easier for developers.

In this article, we will explore some new features of the JavaScript ECMAScript 2017. Take your coffee and let’s get started.

1. JavaScript String Padding
2. JavaScript Object Values
3. JavaScript Object Entries
4. JavaScript Async Functions
5. Object.getOwnPropertyDescriptors( )

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1. JavaScript String Padding

ECMAScript 2017 added two string methods: padStartand padEndwhich allows you to add padding at the beginning and at the end of a string. You can have a look at the examples below to understand those methods:

let str = "5";
str = str.padStart(4,0);
// result is 0005

The padStart Method.

let str = "1";
str = str.padEnd(4,0);
// result is 1000

The pad End Method.

You can try that in your browser console if you want.

2. JavaScript Object Values

JavaScript 2017 also introduced the Object.valuesthat returns a single dimension array of the object values. Have a look at the example below:

const person = {
  firstName : "Mehdi",
  lastName : "Aoussiad",
  age : 19,
  eyeColor : "black"
};
console.log(Object.values(person));
// Prints ["Mehdi","Aoussiad",19,"black"]

Object.values in JavaScript.

#javascript #web-development #programming #developer

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5 Features of JavaScript ECMAScript 2017 with Practical Examples

Introduction

JavaScript is one of the powerful and popular programming languages, especially in web development. It is most well-known as the scripting language for web pages. JavaScript was invented by Brendan Eich in 1995 and became an ECMA standard in 1997. ECMAScript is the official name of the language. In addition to that, every new version of the language comes with awesome features that make the development process easier for developers.

In this article, we will explore some new features of the JavaScript ECMAScript 2017. Take your coffee and let’s get started.

1. JavaScript String Padding
2. JavaScript Object Values
3. JavaScript Object Entries
4. JavaScript Async Functions
5. Object.getOwnPropertyDescriptors( )

---

1. JavaScript String Padding

ECMAScript 2017 added two string methods: padStartand padEndwhich allows you to add padding at the beginning and at the end of a string. You can have a look at the examples below to understand those methods:

let str = "5";
str = str.padStart(4,0);
// result is 0005

The padStart Method.

let str = "1";
str = str.padEnd(4,0);
// result is 1000

The pad End Method.

You can try that in your browser console if you want.

2. JavaScript Object Values

JavaScript 2017 also introduced the Object.valuesthat returns a single dimension array of the object values. Have a look at the example below:

const person = {
  firstName : "Mehdi",
  lastName : "Aoussiad",
  age : 19,
  eyeColor : "black"
};
console.log(Object.values(person));
// Prints ["Mehdi","Aoussiad",19,"black"]

Object.values in JavaScript.

#javascript #web-development #programming #developer

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

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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.

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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.

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JavaScript: Guide to New ECMAScript 2020 Features

ECMAScript is the specification upon which JavaScript is based. And since 2015, it has been evolving year after year, with the addition of features like classes, modules, async/await and many others. And what makes things even better is that today’s browsers add support for new features quickly, with a short time between releases. In this article, you’ll find out what is new in ECMAScript 2020. Have a good read!

#javascript #ecmascript #ecmascript-2020