15 Tips To Become A Better JavaScript Programmer

By – HtmlCssMonk

JavaScript has quickly become an important language used in many aspects of website development. Whether you are involved in creating websites, or simply improving user experience on existing ones, JavaScript is the boon (and bane, sometimes) of your existence. It is a very sought-after skill in the technical and web development sector, and thousands of graduates or about-to-graduate students can be seen working hard on improving their JavaScript skills.

Although it may look very simple and straightforward to new programmers, it has several features and “gotchas” that may leave you scratching your head, wondering why your code doesn’t work.

Don’t worry! We are here to help you improve your JavaScript skills from scratch. This Article tells you how you can be one step ahead than your fellow web developers and polish your JavaScript better.

Tips to become Better in JavaScript

1. Dive deep into the Basics

Many times it so happens that you are applying the logic with coding but forget that there is an already built-in function for that like slicing an array. Sometimes, you get an error while running the JavaScript code and due to it, many other functionalities are also not working. Just a small colon or inverted commas can cause this.

These things happen due to unclear basics.

A simple loop like for, which or do while is used many times in a single program. Loops are very basic things inside programming. If you are not clear with the looping and other basics, it is really very hard to code and even get a chance to get hired for a company.

It is very important to brush up your basics as they give you a strong base on top of which you can build the complex logic of a solution and strong reputation.

So, Learn and practice the basics !

Learn JavaScript Basics here.

2. Use Object-Oriented Approach

The object-oriented approach is the most famous approach used today in programming. An object becomes a basic entity then. This object is then taken as a base and used to apply properties and functions to the page.

For example, I create an object car. This object can be wrapped with many functions such as color, specifications, price, etc and everything that we do is on this object. We can select a car. Colour (“red”) to change the car color to red. Similarly, we can change the price by car.Price(“50”). An object is a base for everything that you do in the programming language.

So, try to convert your exhaustive code to the object-oriented code in the beginning and practice writing your code always in an object-oriented style. When you will read the code of others, you will be looking at object-oriented approaches all the time. So it is better you have your hands on it if you wish to become a JavaScript master.

3. Understand DOM

DOM or Document Object Model is created of a page when it is loaded into the browser. This has various levels that help to access the various elements easily. Understanding how the DOM works is very important to become a JavaScript master.

JavaScript has the power to change any element inside HTML. It can change your background colour, your font anything. When JavaScript has so much power and is used so intensely inside HTML, knowing what will affect what is a must. As a programmer, you should know how changing child property and parent property simultaneously will affect the overall structure of the page. DOM is one of the basic and most important things for a JavaScript developer and he should be an expert in this.

4. Use Functions To Define Different Modules

A functional approach is a great approach in programming because it divides your program in the modules that work together but is still apart.

Let me take an example to clear it out. There is a function to calculate Root Mean Square of the numbers. For this, you need to square the numbers, take their mean and their take square root of the mean. There are three steps involved in it. Therefore, we can make use of three functions. But see, all these functions are interlinked. The output of one goes to another and we get the final answer then.

Now, let’s say instead of three functions, you are using only one function to calculate RMS using various variables. As you see, the final answer is wrong. It will become really hard for you now, to check where what went wrong in such a big function. Instead, having three small functions will help you analyze quickly.

Hence, use functions to define various modules of the code, even if the functions are small. This tip would work like magic to help you become a JavaScript master.

5. Error Handling

If you are into coding, your code is prone to errors. Normally, if you are working on a big project, errors are a common thing. And they should be. They open other possibilities that you might not have thought about while writing the code. But these errors are needed to be handled correctly or else they disturb the flow of the program.

Now, console.log is a conventional method to log errors. But they are extensive and time-consuming. To handle the errors more efficiently, you can use the Error Objects. An error object looks like,

const err = new Error(‘Please improve the time complexity of the code’)
console.log(err.message) // please improve your code

This gives you the power to display an error message too. You can also use try, catch and finally to apply validations on your code. If an error is found in the code in the try block, you can jump to catch block to either execute an error code or display some message. Finally, block executes the code in all the cases, whether there is an error or not. A sample code is given below:

catch (Exception e)

6. Understand The Code Of Others

Reading the code of other developers is a great way of expanding your JavaScript skills. It would be better to see the code of any random problem but it would be best to see the code of a problem you have worked upon. Work on the code whose solution fascinates you like a website. If you like a website and wonder how the developer achieved this, see the code. A problem has different solutions and it is better to know all to learn how to reduce the complexities of the JavaScript code. 

No matter how good you start to code in JavaScript, there will always be someone better than you. No matter how great your logic is of a problem, there will always be a better logic for the same problem. And accepting this fact shouldn’t be a problem if you are on the path of becoming a JavaScript master.

7. Always Remember Cross Browser Compatibility

When you work in web development, the main issue to keep in mind is cross browser compatibility. Cross browser compatibility briefly means the representation of your website on different browsers.

Not all websites use identical JavaScript code, & different browsers render JavaScript differently, leading to browser compatibility issues. These issues are not easy to resolve once your website is complete and you did not check it online. 

There are various browser compatibility testing tool out there such as LambdaTest. You just need to enter your website name and select the versions and browsers (along with the operating systems) on which you want to test the website and you will get detailed report.

8. Make use of correct frameworks and libraries

Since browsers already run JavaScript engine, there is no need to develop something new. If you are using some functionalities again and again or are planning to use something repeatedly, you better build a beautiful framework that will not only help you but making it open source will help everyone. 

JavaScript has seen many frameworks in its lifetime. React.js, Node.js, Reasonml are just to name a few. Even JQuery is built on JavaScript. So, while you are on JavaScript, learn one or two basic frameworks. Today, good companies and good projects don’t go for the exhaustive approach of writing everything from scratch. They prefer opting for frameworks and libraries. 

9. Handling Memory Leaks

Memory leaks are a very common issue in a JavaScript environment. A memory leak happens when you have reserved the memory but you do not need them or you are not using them. Memory is reserved through variables and objects. The outcome for this is slowing down of runtime and ultimately slow down of the website. This is not appreciated among the JS community.

If you have an edge on this among all the developers, you will be preferred among all. There are many reasons that can cause a memory leak. These can vary from accidental global variables to timers (setInterval() ) declaration. These things are needed to be kept in mind. You can check for memory leaks by using the developer tools of the browsers and then continue modifying your code.

10. Follow Developer Communities

Stack overflow is one of the most popular websites among computer science engineers. It has been one of the major sources of understanding complex coding problems and concepts. There is no surprise that many companies follow stack overflow for their problems too. If you are not signed up onto the stack overflow, then follow the tag about JavaScript so that you are always aware of the problems people are facing in JavaScript.

Not only that, but you can also contribute by helping other people by giving the solutions which you could not have done on YouTube or any other website. This will help you brush up your skills. This will increase your points on stack overflow which makes you popular among the community and there is no doubt that many good big recruiters search for good coders on stack overflow.

11. Bookmark Reliable Sources

Reliable sources can be anything like a renowned programmer/author, giant companies like Microsoft or it can be critically acclaimed websites like w3schools. Always bookmark reliable JavaScript source on the internet. JavaScript is not a theorem that once stated will remain forever. It grows. It changes constantly. Bookmarking these pages will help you access anything particular in seconds.

12. Subscribe Reliable Channels On YouTube

Many people opt to view a video about the concept they want to learn rather than reading about it. But, this is known to everybody. So, the problem that we face on the websites is also faced here. Anybody can upload a video with any content. I have seen a lot of times while learning a concept, the comment section is full of comments like, “The thing you said about arrays is not correct”. “Fake video”.

You cannot rely on any channel that is for sure. Therefore, you need to subscribe to the reliable YouTube channels that will teach you JavaScript in a most beautiful way.

13. Read Books

Reading from the book has few advantages of its own. First of all, whenever someone writes a book on a language, he has full grasp and experience in that area. That is very valuable for a beginner. The author can explain in a way that is easy and quickly understandable.

On the other hand, this is not the case with the internet. Internet is full of ambiguity. Many times you can come across two different contradicting points that are hard to decide. Trusting on a page on the internet is hard. When you write a book, it needs publishers and a good audience. An audience who are ready to devote their time, a lot of time actually, on a single book. This makes a book great.

14. Try To Solve Complex Things Regularly

In addition to finding the solutions and developing websites, accept the challenges as much as possible. Challenges can be in any way such as thinking of a very complex feature on a website, maybe just for practice. This will help you explore JavaScript to a level greater than others.

For that single feature, you might have to learn a new library, a new concept which will definitely help you in the future. So, always try to come up with some complex things and you will learn more than anything.

15. Practice, practice, and practice!

There’s no alternative to practice, in any walk of life. Whether you are looking to get better at football or writing JavaScript code, practice makes perfect. So, don’t wait around, grab your laptop, learn some JavaScript, take up a project, and start coding!

The points I shared above are very important in order to become a JavaScript master. Keep these on your tips and follow them one by one.

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