Category: JavaScript

  • What Is the Difference Between Null and Undefined in Javascript?

    What is the difference between null and undefined in JavaScript? In JavaScript, both null and undefined are special values that indicate the absence of a meaningful value. However, there is a subtle difference between the two. Let’s take a look at what sets them apart. Null The null value is an explicit representation of nothing.…

  • How to Get the Children of the $(This) Selector?

    If you are working with JavaScript and using the jQuery library, you may come across a situation where you need to get the children of a specific element using the $(this) selector. In this blog post, we will explore different ways to achieve this. Method 1: Using the children() Method The children() method in jQuery…

  • $(Document).Ready Equivalent Without Jquery

    When working with JavaScript, it is common to use the jQuery library for various tasks. One of the most commonly used jQuery functions is $(document).ready(), which ensures that the code inside the function is executed only after the DOM is fully loaded. However, there may be situations where you want to achieve the same functionality…

  • How Can I Guarantee That My Enums Definition Doesn’t Change in Javascript?

    Enums are a useful feature in many programming languages, including JavaScript. They allow you to define a set of named constants, which can make your code more readable and maintainable. However, one problem with enums is that they can be modified at runtime, which can lead to unexpected behavior and bugs. In this blog post,…

  • Javascript Check If Variable Exists (Is Defined/Initialized)

    When working with JavaScript, it is important to check if a variable exists or is defined/initialized before using it. This can help avoid errors and ensure that your code runs smoothly. In this blog post, we will explore different ways to check if a variable exists in JavaScript. Method 1: Using the typeof operator The…

  • Iterate Through Object Properties

    In JavaScript, objects are a fundamental data type that allow you to store collections of key-value pairs. Often, you may need to iterate through an object’s properties to perform various operations or access specific values. In this blog post, we will explore different methods to iterate through object properties in JavaScript. Method 1: for…in Loop…

  • Get Selected Value in Dropdown List Using Javascript

    Dropdown lists are a common feature in web forms, allowing users to select an option from a list. In this blog post, we will explore how to get the selected value from a dropdown list using JavaScript. Method 1: Using the value property The value property of a dropdown list can be used to get…

  • Get Selected Text from a Drop-down List (Select Box) Using Jquery

    As a tech professional, you may often come across the need to get the selected text from a drop-down list (select box) using jQuery. In this blog post, we will explore different solutions to achieve this. Solution 1: Using the .val() method The simplest and most straightforward way to get the selected text from a…

  • How Do I Chop/Slice/Trim off Last Character in String Using Javascript?

    When working with strings in JavaScript, you may come across a situation where you need to remove the last character from a string. There are several ways to achieve this, and in this blog post, we will explore three different solutions. Solution 1: Using the slice() method The slice() method in JavaScript allows you to…

  • Generating Random Whole Numbers in Javascript in a Specific Range

    Generating random whole numbers in JavaScript is a common task, but what if you want to generate these numbers within a specific range? In this blog post, we will explore different ways to generate random whole numbers in JavaScript within a specific range. Method 1: Using Math.random() and Math.floor() The first method involves using the…