Article Categories
- All Categories
-
Data Structure
-
Networking
-
RDBMS
-
Operating System
-
Java
-
MS Excel
-
iOS
-
HTML
-
CSS
-
Android
-
Python
-
C Programming
-
C++
-
C#
-
MongoDB
-
MySQL
-
Javascript
-
PHP
-
Economics & Finance
Articles on Trending Technologies
Technical articles with clear explanations and examples
Array of adjacent element's average - JavaScript
Let's say, we have an array of numbers: const arr = [3, 5, 7, 8, 3, 5, 7, 4, 2, 8, 4, 2, 1]; We are required to write a function that returns an array with the average of the corresponding element and its predecessor. For the first element, as there are no predecessors, so that very element should be returned. Let's write the code for this function, we will use the Array.prototype.map() function to solve this problem: Example const arr = [3, 5, 7, 8, 3, 5, 7, 4, 2, 8, ...
Read MoreHow can I round down a number in JavaScript?
This tutorial teaches us to round down a number in JavaScript. The meaning of the round-down number is "returning the integer which is equal to or less than the current float number". For example, if we round down the number 9.99, we get 9 as an output, and in the same way, for 8.01 we get 8 as an output. In simple terms, if you represent your current number in the number line, you must return the nearest integer that resides on the left side of the current number. In this tutorial, we will take a look at ...
Read MoreHow to set the left padding of an element with JavaScript?
Use the paddingLeft property in JavaScript to set the left padding of an element. This property allows you to dynamically modify the spacing between an element's content and its left border. Syntax element.style.paddingLeft = "value"; The value can be specified in pixels (px), percentages (%), em units, or other CSS length units. Example #box { border: 2px solid ...
Read MoreHTML5 / JS storage event handler
Storage event handlers in HTML5 only fire when storage changes are triggered by another window or tab. This means storage events won't fire in the same window that made the change. Syntax window.addEventListener('storage', function(event) { // Handle storage changes from other windows }, false); Example: Basic Storage Event Handler Storage Event Example Storage Event Demo Open this page in another tab and click the button to see the event fire. ...
Read MoreHow to remove non-word characters in JavaScript?
To remove non-word characters in JavaScript, we use regular expressions to replace unwanted characters with empty strings. Non-word characters include symbols, punctuation, and special characters that aren't letters, numbers, or underscores. What are Non-Word Characters? Non-word characters are anything that doesn't match the \w pattern in regex. This includes symbols like !@#$%^&*(), punctuation, and special characters, but excludes letters (a-z, A-Z), digits (0-9), and underscores (_). Using Simple Regex Pattern The most straightforward approach uses the \W pattern, which matches any non-word character: function removeNonWordChars(str) { if ...
Read MoreHow to display the date and time of a document when it is last modified in JavaScript?
In this article we are going to discuss how to display the date and time of a document when it is last modified in JavaScript. It is important to know the last updated date and time of a web document, when you read some content on the web, to know whether the web document is latest or outdated. The Document object has lastModified property which returns us the last modified date and time of a document. This is a read-only property. The value of the lastModified property is obtained by the HTTP header from the web server. ...
Read MoreTypeError: 'undefined' is not an object in JavaScript
The "TypeError: 'undefined' is not an object" error occurs when you try to access properties or call methods on an undefined variable. This error message is specific to Safari browser, while other browsers show similar but differently worded errors. What Causes This Error This error happens when: A variable is declared but not assigned a value An object property doesn't exist A function returns undefined and you try to access its properties Example: Accessing Property of Undefined Variable ...
Read MoreBuild maximum array based on a 2-D array - JavaScript
Let's say, we have an array of arrays of Numbers like below − const arr = [ [1, 16, 34, 48], [6, 66, 2, 98], [43, 8, 65, 43], [32, 98, 76, 83], [65, 89, 32, 4], ]; We are required to write a function that maps over this array of arrays and returns an array that contains the maximum (greatest) element from each subarray. So, for the above array, the output should be − [48, 98, 65, 98, 89] Using ...
Read MoreWhat is availHeight property in JavaScript?
The screen.availHeight property returns the available height of the user's screen in pixels, excluding areas occupied by the taskbar, dock, or other system interfaces. Syntax screen.availHeight Return Value Returns a number representing the available screen height in pixels, excluding system UI elements like taskbars. Example Here's how to use the screen.availHeight property to get the available screen height: Screen Available Height ...
Read MoreAny ideas on how to prepare for the future of Flash/ Flex/ HTML5 Development?
The web development landscape has evolved significantly since Flash's decline. Understanding the transition from Flash/Flex to modern HTML5 technologies is crucial for developers preparing for the future. The End of Flash Era Adobe Flash officially ended support in December 2020. Major browsers now block Flash content by default, and users must manually enable it for legacy applications. This marked the definitive shift toward modern web standards. HTML5: The Modern Web Standard HTML5 represents a collaboration between the World Wide Web Consortium (W3C) and the Web Hypertext Application Technology Working Group (WHATWG). It provides native support for ...
Read More