Optional chaining (?.) in JavaScript is part of the ES2020 release. This operator enables us to safely access nested properties by handling null/undefined references. In simple words, the Optional chaining operator when met with a non-existing property instead of throwing a reference error, it returns undefined. Example How it works?… Read More »Optional Chaining (?.) – Question mark and Dot in JavaScript
The Nullish Coalescing Operator (??) of JavaScript is a logical operator that enables us to set a default/fallback value when the value on it’s left are null or undefined. I was excited when I got to know this operator because of two main reasons, It makes the code clean and… Read More »Nullish Coalescing Operator ??
JSON stands for JavaScript Object Notation. It is one of the popular formats to store, transfer and structure data and in this post, I’ll explain the standard definition and usage of JSON in JavaScript. JSON is not JavaScript JSON is basically a text-based format to store data, it follows the… Read More »JSON and JavaScript 101
Data Type is the type/nature of data held in a variable. According to the latest ECMAScript standard definition, there are nine types of data in JavaScript. In this post, I’ll explain each of the data types with some examples. Dynamic Typing Javascript is Dynamically Typed, also known as a Loosely… Read More »JavaScript Data Types 101
Hoisting is the default behavior of JavaScript where all the declarations are moved to the top of their scope. In simple words, we can use a variable or call a function before it is declared. Hoisting is a unique concept of JavaScript, and in this post, let us learn about… Read More »Hoisting in JavaScript
We can declare a variable in JavaScript using any of the three keywords var, let, and const. In this article, we’ll discuss the key properties and consequences of using each of these keywords. I personally prefer to use const always wherever possible because of its secure nature, more on that… Read More »var, let, always use const?