Abdullah AL Habib

May 15, 2021

Tricky Javascripts

Undefined & Null undefined : undefined typically means a variable has been declared but no value has been assigned a value let demo; alert(demo); //shows undefined alert(typeof demo); //shows undefined null : null is an assigned value. It means nothing. You can assign it to a variable. let demo = null; alert(demo); //shows null alert(typeof…

2 min read

May 15, 2021

React basic concepts

React is a javascript library that creates user interfaces. React is being a popular javascript library for its interactivity. We will check to react to fundamental concepts in this article. 1) It is a library Unfortunately, react js is not a framework. It can not provide you a complete solution for your projects. You have…

3 min read

May 6, 2021

Basic JavaScript for Beginners

Primitive Values var bar = “Hero”; console.log(bar); bar.toUpperCase(); console.log(bar); //Ans: //Hero //HERO There are seven primitive data-type as there are: string number boolean undefined symbol null Objects and Functions Object and function are also value but they are not primitive. …

3 min read

May 5, 2021

10 Methods That Every JavaScript Developer Should Know

Javascript Array and String are great data structures for every js programmer. So, I am trying to describe 10 useful Things of the javascript array and string. Declare an Array let arr = new Array() or let arr = []; 2. Check if an Object is Array Array.isArray(languages); 3. Check…

1 min read