Category: JavaScript

What’s the difference between event.stopPropagation and event.preventDefault? When working with JavaScript and handling events, it’s important to understand the differences between event.stopPropagation() and event.preventDefault(). These two methods are commonly used to control the behavior of events, but they serve different purposes. event.stopPropagation() The event.stopPropagation() method is used to stop the propagation of an event through…

When working with arrays in JavaScript, you may often come across the need to delete elements from an array. Two commonly used methods for deleting array elements are delete and splice. In this article, we will explore the differences between these two methods and provide code snippets for each solution. The delete method The delete…

When working with JavaScript, you may come across the terms ‘prototype’ and ‘this’. These two concepts play a crucial role in JavaScript programming, but they serve different purposes. In this blog post, we will explore the use of ‘prototype’ and ‘this’ in JavaScript and understand when to use each. Understanding ‘prototype’ In JavaScript, every object…

SecurityError: Blocked a frame with origin from accessing a cross-origin frame If you are a JavaScript developer, you may have encountered the SecurityError: Blocked a frame with origin from accessing a cross-origin frame error at some point. This error occurs when you try to access or manipulate content in a cross-origin frame, which is a…

What does the exclamation mark do before the function? As a JavaScript developer, you might have come across code snippets where a function is preceded by an exclamation mark (!). This can be confusing, especially if you’re not familiar with this syntax. In this blog post, we’ll explore what the exclamation mark does before a…

What is “export default” in JavaScript? When working with JavaScript modules, you might have come across the term “export default”. In this blog post, we will explore what “export default” means and how it can be used in your JavaScript code. “export default” is a syntax feature introduced in ECMAScript 6 (ES6) that allows you…

What do multiple arrow functions mean in JavaScript? Arrow functions have become a popular feature in JavaScript due to their concise syntax and lexical scoping behavior. They allow developers to write shorter and more readable code. But what happens when you have multiple arrow functions in your code? Let’s explore the different scenarios and their…

When working with JavaScript, it is common to come across situations where you need to access nested objects and arrays using a string path. This can be a challenging task, especially when dealing with complex data structures. In this blog post, we will explore different solutions to access nested JavaScript objects and arrays by string…

As web developers, we often come across situations where we need to check if an element is visible on the screen after scrolling. This can be particularly useful when implementing features like lazy loading or tracking user interactions. In this article, we will explore different approaches to determine if an element is visible after scrolling…