Iqra Technology

❮ Previous Next ❯ Understanding JavaScript Regular Expressions (RegEx) What Are Regular Expressions? In JavaScript, RegEx is a way to search and match patterns in strings (a string is a sequence of characters). They help you find text, replace parts of text, or check if certain patterns exist in a string. Imagine you have a […]

❮ Previous Next ❯ Node.js Node.js is like a superpower for web developers, allowing them to use JavaScript to build server-side applications. Normally, JavaScript is used in web browsers to make websites interactive, but with Node.js, you can also use it to create powerful backend programs that run on a server. Why is it so

❮ Previous Next ❯ Async Function and await Keyword What Does Async Mean? The async keyword is used to tell JavaScript that a function will do something that takes time — like waiting for an answer from a server, fetching data, or even waiting for a timer to finish. These operations don’t happen instantly, and

❮ Previous Next ❯ JS Promise In JavaScript, a Promise is an object that represents the eventual completion (or failure) of an asynchronous operation and its resulting value. A promise can be in one of three states: 1. Pending: The initial state, where the operation is still in progress.2. Fulfilled: The operation is completed successfully,

❮ Previous Next ❯ Asynchronous In JavaScript, asynchronous refers to the ability of a program to execute tasks independently of the main program flow without blocking the execution of other tasks. In other words, asynchronous operations allow the code to perform tasks in the background and continue executing without waiting for those tasks to finish.

❮ Previous Next ❯ Error Handling Introduction: What is an Error in JavaScript? In programming, errors are problems that happen when your code is running. It’s like when you’re playing a game and something unexpected happens like your character getting stuck in a wall. In coding, if something unexpected happens, it’s called an error. Why