Asynchronous JavaScript as an Art Masterpiece

Asynchronous JavaScript as an Art Masterpiece

For anyone that is new to JavaScript, there is a common undeniable truth; JavaScript is a headache. If you’re like me and attempting to learn a frontend language after learning a solid backend with a user-friendly language like Ruby, you quickly realize JS does not have our back!

For anyone that is new to JavaScript, there is a common undeniable truth; JavaScript is a headache. If you’re like me and attempting to learn a frontend language after learning a solid backend with a user-friendly language like Ruby, you quickly realize JS does not have our back!

Why is JavaScript so hard to learn?

There are multiple complexities of JavaScript that can be very daunting to grasp for beginners.

  1. In order to use JavaScript, you need to learn multiple things at once.

There are additional topics that you have to teach yourself in able to build a frontend application with JavaScript. As a beginner, this can be extremely overwhelming. One of the advanced features that you need to learn in order to actually write JS is how to write HTTP requests (AJAX) through a RESTful JSON API. When writing out JS code for a web browser, you need to be able to create an HTTP request to a different web address, parse the result of that HTTP request to get the information you desire, and then do something with that result. Learning how to do this on top of learning how to write JS code is difficult and can take months of practice.

2. JavaScript is an asynchronous programming language.

Most programming languages can be broken down into concrete steps:

  • First, do this and wait for it to be finished before moving on to the next thing.
  • Then, do that and wait for it to be finished before moving on to the next, next thing.
  • etc.

JavaScript works in an asynchronous way:

  • First, do this and move on to the next thing, but notify me when it finishes.
  • [then later]
  • Finally, notify me that the first thing is finished.
  • Finally, notify me that the second thing finished. (but not necessarily in this order).

Asynchronous code is important when it comes to loading a browser for the best user experience. If JS was written synchronously, the user could be waiting to see important features on your web page. This creates a poor experience for the user and hinders the success of your application.

javascript web-development software-engineering coding async-functions

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