Month: July 2025

The ECMAScript 2018 version of JavaScript was released in 2018. ECMAScript 2017 introduced singnificant enhancement to the language. Two important features introduced in this version are asynchronous iteration for improved handling of asynchronous operations, and promise finally() to execute code regardless of promise resolution. This chapter will discuss all the new added features in ECMAScript 2018. New Added Features in ECMAScript […]

The ECMAScript 2017 version of JavaScript was released in 2017. ECMAScript 2017 introduced a number of new features to the language. One the most notable features is async/await syntax which allows us to write asynchronous operations in a more synchronous style. It provided shared memory and atomics that enhances support for concurrent programming. In this […]

The ECMAScript 2016 version of JavaScript was released in 2016. Previously the old versions of JavaScript are named by numbers for example ES5 and ES6. Since 2016 the versions are named by the year they are released for example ECMAScript 2016, ECMAScript 17, etc. Lets discuss the featues added in ECMAScript 2016. New Features Added in ECMAScript […]

The ES6 version of JavaScript was released in 2015, marking the second major revision of JavaScript. The ES6 is also known as ECMAScript 2015. Some of the important features introduced in ES6 are arrow functions, let and const keywords, Classes, res parameters, etc. This chapter will discuss all the newly added features in ES6 version. […]

JavaScript ES5, also known as ECMAScript 5, was released in 2009. It was the first major revision of JavaScript. It introduced many new features, including getters and setters, and ‘use strict‘ directive. ES5 has provided significant improvement over the previous versions of JavaScript. The new features introduced in ES5 make code more powerful, concise and easier to maintain. […]

JavaScript was developed by Brendan Eich in 1995. It was standardized in 1997 by European Computer Manufacturers Association (ECMA) and officially known as ECMAScript. The first version of the language is known as ECMSScript 1 (abbreviated as ES1). The fist three versiosn (ES1, ES2, and ES3) laid the foundation of the language. The fourth version, […]

Proxy in JavaScript The JavaScript proxies are objects that allow you to wrap a particular object and customize the fundamental operations of the object, like getting and setting object properties. In short, using the proxy object, you can add custom behavior to the object. The proxies are used to implement features such as logging, caching, and securities. […]

Mixins in JavaScript The mixins in JavaScript allow you to add the properties of the other objects or classes to the target object’s or class’s prototype and extend the functionality of the target object. After that, you can access the other object’s method using the target object. In JavaScript, each object contains a built-in property […]

Global Objects in JavaScript The JavaScript global object allows you to access the variables, functions, objects, etc., defined in the global scope and available everywhere in the code. In the browser, a global object is named as ‘window‘, and in Node.js, the global object is named ‘global‘. However, the global object could have different names in different […]

The optional chaining in JavaScript allows you to access nested properties and methods of an object without checking if each property exists. This can help to make your code more concise and easier to read. The optional chaining operator (?.) is sued to achieve optional chaining in JavaScript. It is placed before the property or […]