Category Archive for "Javascript"

How do I return the response from an asynchronous call?

Asynchronous calls are a common requirement in modern web development, especially when making API requests or reading files. In JavaScript, you cannot directly return the response...

Event binding on dynamically created elements

When working with dynamically created elements, event binding can sometimes be a challenge. The problem arises when you want to bind an event handler to an element that is not yet...

How to access the correct `this` inside a callback

In JavaScript, one common problem that many developers face is how to access the correct this inside a callback function. This issue often arises when using event han...

JavaScript Closure Inside Loops – Simple Practical Example

The Problem When working with JavaScript, particularly with loops, you might run into a common problem involving closures. Let's take a look at a simple practical example: for (v...

How to Access and Process Nested Objects, Arrays, or JSON in JavaScript

When working with complex data structures in JavaScript, such as nested objects, arrays, or JSON, it can be challenging to access and extract specific values or keys. How...

What is the difference between client-side and server-side programming?

Client-side and server-side programming are two fundamental approaches in web development that serve different purposes and have distinct characteristics. Understanding the differe...

How does the "this" keyword work, and when should it be used?

Understanding the "this" keyword in JavaScript can be challenging for many developers, especially those who are new to the language. However, once you grasp the concept and learn h...

What do querySelectorAll and getElementsBy* methods return?

When working with JavaScript and DOM manipulation, you may come across methods like getElementsByClassName, getElementsByTagName, and querySelectorAll. These methods are used to se...

How do JavaScript Closures Work?

JavaScript closures are a powerful and often misunderstood concept. They allow you to create functions with persistent variables, preserving their state even after the function has...

What is the explicit promise construction antipattern and how do I avoid it?

The explicit promise construction antipattern, also known as the deferred antipattern or the Promise constructor antipattern, refers to the practice of using promise constructors s...