Comparing Undefined, Null, and Not Defined in JavaScript | #shorts #short #coding #javascript

In JavaScript, there are three common values that can be used to represent missing or uninitialized variables: undefined, null, and not defined. While they might seem similar at first, they actually have distinct meanings and behaviors that can affect the behavior of your code.

In this video, we'll explore the differences between these three values and when to use each one. We'll start by looking at undefined, which is typically used for variables that have been declared but not yet assigned a value. We'll then move on to null, which represents a deliberate absence of any object value. Finally, we'll discuss not defined, which occurs when a variable is used without ever being declared.

Throughout the video, we'll provide examples and demonstrations to help you understand these concepts in a practical way. Whether you're new to JavaScript or an experienced developer, understanding the differences between undefined, null, and not defined is essential for writing robust and reliable code. So sit back, grab your favorite code editor, and let's dive in!