Category: JavaScript

  • How to Convert Set to Array?

    As a JavaScript developer, you may often come across situations where you need to convert a Set to an Array. Sets are a built-in object in JavaScript that allow you to store unique values of any type. Arrays, on the other hand, are ordered lists of values. While Sets have their own advantages, sometimes you…

  • Error: Can’t Set Headers after They Are Sent to the Client

    Error: Can’t set headers after they are sent to the client If you have been working with JavaScript and Node.js for a while, you might have come across the error message “Error: Can’t set headers after they are sent to the client”. This error can be quite frustrating, but don’t worry, we’ve got you covered.…

  • How to Check If a String Is a Valid Json String?

    How to check if a string is a valid JSON string? When working with JavaScript, you might come across scenarios where you need to check if a given string is a valid JSON string. In this blog post, we will explore different solutions to tackle this problem. Solution 1: Using try-catch block One way to…

  • How to Get First N Number of Elements from an Array

    How to get first N number of elements from an array Working with arrays is a common task in JavaScript, and sometimes we need to extract only a specific number of elements from an array. In this blog post, we will explore different methods to achieve this in JavaScript. Method 1: Using the slice() method…

  • How Can I Tell If a Dom Element Is Visible in the Current Viewport?

    How can I tell if a DOM element is visible in the current viewport? As a JavaScript developer, you may often come across situations where you need to determine if a DOM element is visible in the current viewport. This can be useful for various scenarios, such as lazy loading images, implementing infinite scrolling, or…

  • Html Text Input Allow Only Numeric Input

    HTML Text Input: Allowing Only Numeric Input When working with HTML forms, you may come across situations where you want to restrict user input to only numeric values. This can be useful in scenarios such as phone number inputs, age inputs, or any other field where non-numeric characters are not allowed. In this blog post,…

  • How Can I Access and Process Nested Objects, Arrays, or Json?

    When working with JavaScript, it is common to encounter nested objects, arrays, or JSON data structures. Accessing and processing these nested structures can be a bit tricky, but fear not! In this blog post, we will explore different techniques to help you navigate and manipulate nested data. 1. Dot Notation The dot notation is a…

  • What Is the Purpose of Node.Js Module.Exports and How Do You Use It?

    What is the purpose of Node.js module.exports and how do you use it? When working with Node.js, you might have come across the module.exports statement. But what exactly is its purpose and how can you use it effectively? In this article, we’ll explore the ins and outs of module.exports and provide you with some practical…

  • Why Don’t Self-closing Script Elements Work?

    Why don’t self-closing script elements work? As a JavaScript developer, you may have come across the issue of self-closing script elements not working as expected. This can be quite frustrating, especially when you’re trying to include external JavaScript files or inline scripts in your HTML. In this article, we’ll explore the reasons behind this behavior…

  • How to Check If Object Property Exists with a Variable Holding the Property Name?

    When working with JavaScript, it is common to come across situations where you need to check if an object property exists. In some cases, you may have the property name stored in a variable and need to determine if the property exists using that variable. In this blog post, we will explore different ways to…