Latest Tutorials and How-To's


Javascript Logical OR Assignment Operator

The logical OR assignment operator (||=) works like the assignment operator (=), but assigns only when the left-hand side is a falsy value.
August 1, 2020

HTML Guidelines for Creating Better Forms

This article discusses some basic HTML guidelines for creating better forms. It deals with HTML tags & attributes that can help user to fill the form better.
July 19, 2020

How to Install and Use AWS Node.js SDK - Getting Started Tutorial

This tutorial discusses installation of AWS Node.js SDK and getting started with it.
July 3, 2020

How to Install LAMP (Linux, Apache, MySql & PHP) on Azure with Ubuntu 18.04

In this article step-by-step process is discussed to setup LAMP stack in Azure, with Ubuntu 18.04 as the operating system.
June 24, 2020

Checking for a Sub-String in Javascript - All Possible Cases

Javascript provides multiple methods that can check whether a sub-string is contained in a string, depending on various possible use-cases.
June 9, 2020

How to Install LAMP (Linux, Apache, MySql & PHP) on AWS EC2 with Ubuntu 20.04

In this article step-by-step process is discussed to setup LAMP stack in AWS EC2, with Ubuntu 20.04 as the operating system.
June 3, 2020

How to Check If a Javascript Function Was Called Using new Operator

The property can be used to detect whether a function was invoked as a constructor using the new operator, or just called normally.
May 21, 2020

Vertical Text, with Horizontal Letters in CSS

Creating a vertical direction text with horizontal characters can be achieved using text-orientation & writing-mode CSS properties.
May 18, 2020

File Uploading Progress in Javascript Fetch

Currently it is not possible to get file upload progress for fetch. The alternate solution for now is to use XMLHttpRequest.
May 17, 2020

How to Check If Element is Visible / Hidden in Page using Intersection Observer

Checking whether an element is visible or hidden in the full page, even through it may not be in screen view, can be done through an Intersection Observer. The trick is to set the root element to document.documentElement.
May 15, 2020

How to Detect Change in Element Size with Javascript

Detecting an element for change in dimensions using JS can be done with the ResizeObserver interface. This is supported in all modern browsers.
May 11, 2020

Detecting Dark Mode with Javascript

Device dark mode can be checked in Javascript by using window.matchMedia() to check a match for the prefers-color-scheme: dark CSS media query.
May 9, 2020

How to Position Element to Bottom of Its Container with CSS Flex

A multi-row layout where the last DIV needs to be placed at bottom of its parent container can be created using CSS flex, by setting margin-top as auto for the last element.
May 6, 2020

Getting Property Value in a Deeply Nested Object (using ES2020 Optional Chaining Operator)

Property value in a deeply nested Javascript object can be found using the Optional Chaining Operator, introduced in ES2020.
May 4, 2020

How to Create LEFT-RIGHT Alignment of Containers with CSS Flex

A two-column layout, where the first item is aligned to the left, and the second item is aligned to the extreme right, can be created using justify-content CSS flex property.
April 30, 2020

Handling Error HTTP Responses in Javascript fetch

Failed HTTP responses can be handled in fetch() by checking whether the returned Promise was rejected due to a network error. Subsequently the Response.ok property needs to be checked for an invalid HTTP status code.
April 28, 2020

Creating a Slider / Carousel with CSS Flexbox (with infinite repeating items in loop)

A responsive slider / carousel can be created with CSS flexbox using the order property. Items can be repeated infinitely in a circular loop by changing the order property each time.
April 25, 2020

Reading a Text File from Server using JavaScript

A text file on a server can be read with Javascript by downloading the file with Fetch / XHR and reading the response as text.
April 22, 2020

How to Align Column DIVs as Left-Center-Right with CSS Flex

A three-column layout where items are aligned to left, center and right can be created with CSS flex, and using justify-content property.
April 20, 2020

Javascript File Uploading with Fetch, Async & Await

Javascript fetch method can be used to upload files to server. fetch is Promise-based, so we can use async / await to write synchronous styled functions.
April 13, 2020