Five Things That You Need to Know About JavaScript

javascript books on a shelf

JavaScript is a very important tool in web design and it is important that you understand why it is a vital part of every website. JavaScript works in a way that adds an extra layer to your website. This means that pretty much anything that happens on screen that isn’t static content will be using some form of JavaScript.

If you are a business owner and you’d like to have a website created for you then you’ll find companies like ours will look after the JavaScript and the development. If you’d like to have a better understanding of what is going on in this development stage, then you could consider doing some research into the basics. For those of you who are interested in the more advanced features of JavaScript and what it can do, you could consider taking a course. There are many Web development courses available at Red Academy that take place on their Vancouver campus. These courses will teach you everything you need to Launch a career as a junior web developer. And features the most in-demand technologies such as JavaScript, jQuery or CSS3.

If you manage to learn the basics of JavaScript, then you’ll want to know more about what it can actually do. There are so many functions that you can use with JavaScript so keep reading to find out more.

JavaScript In WordPress

If you already use WordPress for your website, you’ll be surprised to know that this website uses JavaScript for you to make your web design easier. If you take advantage of the various WordPress features like widgets, you’ll be running JavaScript in the background as your website is developed. This can you give you a basic understanding of what JavaScript is capable of, but it is important to remember that there is so much more to learn.

AJAX Function

A great feature of JavaScript is the AJAX function which allows you to display the data from your site without reloading the page. AJAX is used on loads of different websites and understanding how this function works can be very important in making your website work properly. You’ll find that websites like Facebook use this function to refresh your newsfeed or wall without making you refresh the entire page. JavaScript is great for this and you should learn how to use the AJAX function.

JavaScript is Single Threaded

With other web design languages, you are able to run various functions at the same time and multitask throughout the code. Unfortunately, with JavaScript, it is single-threaded and so it can only work through one task at a time. This is not ideal, but the creators of JavaScript have tried to bypass this in the past by adapting JavaScript to be event-driven. This involved creating an event which would then have an event listener make it happen and then run the next part of the code.

Using Promises

When using promises in JavaScript web development, you’ll need to understand the terminology correctly to ensure that you are following the code correctly. When it comes to a promise, if you get a resolved message, you can know that your code has been successful. If a rejected message comes up this can be seen as a failure or an error and so the code will need to be inspected and edited. A pending message will suggest that the code is still working through and you’ll need to wait to find out if it has worked. If your code is finished, then you’ll get a message that says settled and you’ll know that it is done.

Using Variable Scooping

If you are planning on developing using JavaScript, you should make sure that you always avoid using global variables. Creating a global property on the window object will cause problems when it comes to you creating a similarly declared variable of the same name. These objects will not work together and will cause problems in your code. If you would like to avoid making your variables global, you can create a function called ‘function’ and put them in it.

Our Verdict

Learning JavaScript can be a long and hard task but once you understand the basics, you’ll love creating your own code. There are many resources online to help you with learning this programming language and you can take a course at one of the Red Academy schools if you’d like to learn how to code in more detail. Coding is not for everyone so make sure to check out our services and advice if you’d like to know more about what we can do for you. Get online and start learning JavaScript now to create the perfect website for your business or personal use.

Michael Pignataro
Co-Chief Executive Officer - Operations at 'corePHP'
Entrepreneur, family man and long-time magician, "Magic Man" Michael Pignataro is co-owner of 'corePHP' with his mirror-image twin brother, Steven. Michael is 'corePHP's Co-Chief Executive Officer - Operations. He's also got a wicked fast wrist at the foosball table.