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In this article we will learn how to use the TARGET attribute to open a website in a new window using HTML and JavaScript. TARGET attribute of HTML A link's opening named frame or window is specified using the Target attribute of the anchor tag. The concluding tag in the HTML content must appear after each commencing tag since the element is paired. Although the href (hypertext reference) element of the anchor tag has several other options, it is required since it contains the URL of the webpage where the link will go when ... Read More
Sorting strings is essential for organizing data alphabetically in JavaScript applications. Whether displaying user lists, organizing menu items, or processing API data, string sorting helps create better user experiences. JavaScript provides built-in methods for sorting, but understanding different approaches helps you choose the right solution for your needs. Using the sort() Method The sort() method is JavaScript's built-in array sorting solution. Unlike other languages that sort numbers by default, JavaScript converts all elements to strings and sorts them alphabetically. Syntax arrayOfStrings.sort(); Basic String Sorting ... Read More
JavaScript Get href Value is a useful tool for web developers and designers who need to quickly access the value of an HTML element's href attribute. This article will provide step-by-step instructions on how to use JavaScript to get the value of an href attribute on a webpage, as well as some tips and tricks for getting the most out of this powerful feature. The ability to quickly obtain the values from an HTML element's attributes can help make development faster and more efficient, so let's get started! The value of the href attribute in JavaScript is a ... Read More
We are required to write a JavaScript function that takes in an array of numbers. Our function should return true if the difference between all adjacent elements is the same positive number, false otherwise. Syntax function growingMarginally(arr) { // Check if array has consistent positive differences // Return true/false } Example: Basic Implementation The code for this will be − const arr = [4, 7, 10, 13, 16, 19, 22]; const growingMarginally = arr => { if(arr.length
We are required to write a JavaScript function that takes in a string of characters as the first argument and a start index and end index as second and third argument respectively. The function should find, had that string, provided as the first argument, been extended forever by appending the same string at end each time, what would have been the substring encapsulated by the start index and the end index. For example, if we have the string 'helloo' repeated infinitely like 'hellooheloohelloo...', we can extract any substring using start and end indices. Understanding the Problem If ... Read More
Loading indicators are essential UI components that inform users when a request is processing. In React Native, the ActivityIndicator component provides an elegant solution for displaying loading states during API calls, form submissions, or data fetching operations. Import Statement To use the ActivityIndicator, import it from React Native: import { ActivityIndicator } from 'react-native'; Basic Syntax Properties Property Description Type ... Read More
In JavaScript, unflattening an object means converting a flattened object (where nested properties are represented as dot-separated keys) back to its original nested structure. This is commonly needed when working with APIs, databases, or form data that store nested objects as flat key-value pairs. What is a Flattened Object? A flattened object has nested properties represented as string keys with dot notation: // Flattened object var flatObj = { "user.name": "John", "user.age": 30, "user.address.city": "New York", "user.address.zip": "10001" }; Basic Unflattening Algorithm ... Read More
Unit testing is a crucial automated testing technique that isolates and tests small portions of your application. Unlike integration tests, unit tests don't connect to external dependencies like databases or HTTP services, making them faster and more reliable. This "full isolation" approach ensures tests won't fail due to external service issues. However, when working with modular JavaScript patterns, unit testing presents unique challenges. Modules help organize code by keeping units cleanly separated, but their encapsulation features can make testing private methods and variables difficult. JavaScript Module Patterns Overview JavaScript modules (also called ES modules or ECMAScript modules) ... Read More
We are required to illustrate the correct way to check whether a particular key exists in an object or not. Before moving on to the correct way let's first examine an incorrect way and see how it's actually incorrect. Way 1: Checking for undefined value (incorrect way) Due to the volatile nature of JavaScript, we might want to check for the existence of key in an object like this: const obj = { name: 'Rahul' }; // Incorrect approaches console.log(!obj['fName']); ... Read More
In JavaScript, accessing values from nested JSON objects is a common task when working with APIs and complex data structures. We can retrieve nested values using dot notation, bracket notation, or custom functions. Before exploring different approaches, let's understand what JSON and nested JSON objects are: What is JSON and Nested JSON Objects? JSON (JavaScript Object Notation) is a lightweight, text-based format for representing structured data. It's widely used for data transmission between web applications and servers. Nested JSON objects contain objects within other objects, creating a hierarchical structure. Each nested property has a unique path ... Read More