How to check if an element is visible in JavaScript
In JavaScript, determining if a DOM element is visible is crucial for tasks like lazy-loading images, triggering animations, and enhancing accessibility. This article covers two main contexts for checking visibility: general visibility (whether the element is rendered and visible based on CSS properties) and viewport visibility (whether the element is visible within the user’s current view). We’ll also delve into the checkVisibility() method, including its options and limitations, and its browser support. Additionally, we’ll discuss how these techniques are applied in real-world components, such as carousels in popular UI frameworks.
How to change opacity on hover in CSS
Changing the opacity of images on hover is a common effect used in web design to create dynamic and interactive user interfaces. This article will walk you through the process of using the opacity property in CSS to achieve this effect.
How to dynamically add, remove, and toggle CSS classes in React.js
Managing CSS classes dynamically in a React application is a common requirement, especially when it comes to creating interactive components. This article will guide you through various techniques to add, remove, and toggle CSS classes in React.
How to loop through a 2D array in JavaScript
In JavaScript, a two-dimensional (2D) array is an array of arrays. It’s often used to store data in a tabular form. Traversing these arrays efficiently is crucial for many software development tasks. This article covers various methods to loop through a 2D array in JavaScript, offering examples to demonstrate each technique.
How to limit items in a .map loop in JavaScript
When working with arrays in JavaScript, the .map method is a powerful tool for transforming elements. However, there are scenarios where you need to limit the number of items processed by .map. This can be particularly useful when handling large datasets or when you only need a subset of data for performance reasons. Here, we’ll explore different methods to limit items in a .map loop.
How to loop through an array in JavaScript
When working with arrays in JavaScript, efficiently looping through array elements is a crucial skill. Here, we’ll explore several methods to iterate over arrays, highlighting their syntax and use cases. Each method allows you to loop through an array, access array elements, and manipulate data effectively.
How to get element ID in JavaScript
When working with JavaScript, accessing and manipulating HTML elements is a common task. One frequently asked question is, “How can I get an element’s ID value with JavaScript?” This guide will explore various methods to retrieve the ID of an HTML element using JavaScript.
What is the Difference Between Null and Undefined in JavaScript
In JavaScript, null and undefined are two distinct types representing the absence of a value, but they have different uses and behaviors. This article delves into the differences between null and undefined, their use cases, and how to work with them effectively.
How to Get Unique Values from a JavaScript Array
In JavaScript, handling arrays and ensuring their uniqueness is a common task. Here are several methods to achieve unique values from an array, ensuring you remove duplicate values effectively.
How to return multiple values from a JavaScript function
In JavaScript, returning multiple values from a function can be effectively achieved using arrays and objects. This approach allows you to return more than one value from the same javascript function call.
