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Articles on Trending Technologies
Technical articles with clear explanations and examples
Absolute sum of array elements - JavaScript
We are required to write a JavaScript function that takes in an array with both positive and negative numbers and returns the absolute sum of all the elements of the array. We are required to do this without taking help of any inbuilt library function. For example: If the array is − const arr = [1, -5, -34, -5, 2, 5, 6]; Then the output should be − 58 Understanding Absolute Sum The absolute sum means we convert all negative numbers to positive and then add all elements. For ...
Read MoreHow to use Meta Tag to redirect an HTML page?
Page redirection is a situation where you clicked a URL to reach a page X but internally you were directed to another page Y. It happens due to page redirection. To use a META Tag to redirect your site is quite easy. With this, use the http-equiv attribute to provide an HTTP header for the value of the content attribute. ...
Read MoreHow to set the color of the rule between columns with JavaScript?
In this tutorial, we will learn how to set the color of the rule between columns with JavaScript. Multiple columns are used to increase the readability of long paragraphs or articles. The column-count CSS property is used to divide the text into columns. To set the color of the rule between columns with JavaScript, we use the columnRuleColor property of the style object. Using the style.columnRuleColor Property In JavaScript, the style.columnRuleColor property of an element is used to set the color of the rule between columns. We can set colors using color names, hex codes, or RGB ...
Read MoreUsage of border-left-style property in CSS
The border-left-style property defines the style of an element's left border. It accepts various values like solid, dashed, dotted, double, and more to create different visual effects. Syntax border-left-style: value; Available Values Value Description none No border (default) solid Solid line dashed Series of dashes dotted Series of dots double Two parallel lines groove 3D grooved effect ridge 3D ridged effect Example: Different Border Styles ...
Read MoreJoining two Arrays in Javascript
In JavaScript, there are multiple ways to join two arrays. The method you choose depends on whether you want to create a new array or modify an existing one. Using concat() Method (Creates New Array) The concat() method creates a new array without modifying the original arrays: let arr1 = [1, 2, 3, 4]; let arr2 = [5, 6, 7, 8]; let arr3 = arr1.concat(arr2); console.log("Original arr1:", arr1); console.log("Original arr2:", arr2); console.log("New combined array:", arr3); Original arr1: [1, 2, 3, 4] Original arr2: [5, 6, 7, 8] New combined array: [1, 2, ...
Read MoreWhat is the difference between `new Object()` and object literal notation in JavaScript?
JavaScript provides two main ways to create objects: new Object() constructor and object literal notation {}. While both create objects, they have important differences in syntax, performance, and flexibility. Object Literal Notation Object literal notation uses curly braces {} to create objects directly with properties: let person = { name: 'Ayush', age: 25, city: 'Delhi' }; console.log(person.name); console.log(person); Ayush { name: 'Ayush', age: 25, city: 'Delhi' } Using new Object() Constructor The new Object() constructor creates an ...
Read MoreWhat are associative Arrays in JavaScript?
Associative arrays are basically objects in JavaScript where indexes are replaced by user-defined keys. They do not have a length property like normal arrays and cannot be traversed using a normal for loop. What are Associative Arrays? In JavaScript, what we call "associative arrays" are actually objects. Unlike traditional arrays that use numeric indexes, associative arrays use string keys to access values. This makes them perfect for storing key-value pairs where you need meaningful identifiers. Creating Associative Arrays You can create associative arrays using object literal syntax or by assigning properties to an empty object: ...
Read MoreHow can we separate the special characters in JavaScript?
In JavaScript, you can separate special characters from text using the match() method with regular expressions. This technique splits strings into arrays containing both word characters and special characters as separate elements. Syntax arrayName.flatMap(item => item.match(/\w+|\W+/g)); The regular expression /\w+|\W+/g works as follows: \w+ matches one or more word characters (letters, digits, underscore) | acts as OR operator \W+ matches one or more non-word characters (special characters, spaces) g flag ensures global matching throughout the string Example: Separating Special Characters from Names Let's separate special characters from an array of ...
Read MoreIterating and printing a JSON with no initial key and multiple entries?
When working with JSON arrays containing multiple objects, you can iterate through each entry using JavaScript's forEach() method. This is particularly useful when your JSON data doesn't have a single root key and contains multiple entries. Syntax array.forEach((element, index) => { // Process each element }); Example: Iterating Through Student Records const details = [ { "studentId": 101, "studentName": "John Doe" }, ...
Read MoreChange every letter to next letter - JavaScript
We are required to write a JavaScript function that takes in a string and changes every letter of the string from the English alphabets to its succeeding element. For example: If the string is − const str = 'how are you'; Then the output should be − const output = 'ipx bsf zpv'; How It Works The algorithm processes each character by checking if it's a letter using ASCII codes. For letters 'a-y' and 'A-Y', it moves to the next letter. For 'z' and 'Z', it wraps around to 'a' and 'A' respectively. Non-alphabetic ...
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