3 min read
1. Not understanding the basics:
2. Not understanding the difference between synchronous and asynchronous code:
On the other hand, asynchronous code is code that is executed in a non-linear fashion. This means that the program can move on to the next line of code while it is waiting for an asynchronous operation (such as a network request or a timer) to complete. Asynchronous code is often used to perform tasks that take a long time to complete so that the program does not block or freeze while waiting for the task to finish.
If you do not understand this concept, it can lead to confusing and difficult-to-debug issues. Make sure you understand the difference between synchronous and asynchronous code and how to work with asynchronous operations using callback functions and Promises.
3. Not understanding the difference between var, let, and const:
const keywords as alternatives to
var for declaring variables. It is important to understand the differences between these three keywords and when to use them, as they have different scoping rules and behaviors.
4. Not understanding the scope of variables:
5. Not testing your code: