10+ Tips For Becoming A Better JavaScript Coder

Are you looking to improve your JavaScript skills—or just wondering what it takes to be a better JavaScript developer? If you want to improve your JavaScript skills, that’s a great professional choice. JavaScript is the most commonly-used language for developers, in large part because it’s the language of the browser. If an application uses the web, it’s using JavaScript. And if you’re using JavaScript—and you’re good at it—you can really turbocharge your career.

You should try to improve your JavaScript skills not only for professional reasons but also because you enjoy working with the language. If you’re anything like me (I started with Ruby), you might find JavaScript intimidating at first—or even despise it. Thankfully, the more I use JavaScript, the more I like it.

1. Grasp The Basics More Thoroughly

I’ll begin with a really basic concept and statement that you’ve heard since you were a youngster. Learn the fundamentals and put them into practice. Many times, you’ll be applying logic with coding, but you’ll forget that there’s already a built-in function for it, such as slicing an array. When you run the JavaScript code, you can get an error, and as a result, many additional features stop working. This can be caused by a single colon or inverted commas. These things occur as a result of a lack of understanding of the fundamentals. Many times in a single program, a simple loop like for, which, or do while is employed. Loops are one of the most fundamental concepts in 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 on 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.

2. Use Functions To Define Different Modules, Even If They Are Small

Programming with a functional approach is a great way to go. Why? It separates your program into modules that work together but are still separate from one another. Let me give you an example to help you understand. The Root Mean Square of the numbers can be calculated using a function. To do so, you must square the integers, calculate their mean, and then calculate the square root of the mean. There are three steps in the process. As a result, we can employ three functions. But, as you can see, all of these functions are interconnected. 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.

3. Build modular, specialized functions

For the purposes of efficiency and readability, no single function should have to perform everything. Instead, think of a single task that the function should fulfill and write it to complete that task solely. Give the function a name that matches the task.

This makes the code easier for others to read. The function will inherently be simpler and less extensive if only working toward one task. Further, it allows you and your team to lift this function to another program should you need it later. Even with just the passed variable names and function titles, we get a clearer understanding of where to find certain tasks in the second version below.

function table (columns, rows, item){
creates table and searches it for the passed item

// compared to

function createTable (columns, rows){
//creates table

function searchTable (table.length, item) {
//searches table for the passed item

4. Use Tools According To The Problem

JavaScript isn’t a brand-new programming language. It’s the same age as I am. And in the extremely competitive area of computer science, a language that endures this long must have something unique and powerful. When something already has a lot of power, web developers usually give it more by establishing libraries. These are extremely powerful libraries that make a lot of tasks easier. Although, in other cases, a library is designed for a specific purpose, as as Facebook’s Reasonml. The reason is a JavaScript flavor 52% of developers don’t know about! Now, as a developer, you have some specific requirements for the project you are working on. This special requirement can be served via a specific tool. For example, say you are building a website for shipping apple accessories, it becomes necessary that your website delivers a smooth UX on every device, especially on iPhones, iPads, macOS. But how would you make sure of it when you don’t have access to them all?

A cloud-based cross-browser testing tool such as LambdaTest can help you test your website on more than 2000 browsers + OS combinations. So you can ensure smooth website rendering on macOS, Windows, Android, iPhones, iPads, & more devices.

5. Understand DOM

When a page is loaded into a browser, the DOM (Document Object Model) is produced. This features a number of levels that make it simple to access the various elements. With so many front-end frameworks and jQuery’s widespread use, you would think that knowing the DOM is no longer necessary. To the contrary, I believe that understanding how the DOM works is critical to becoming a JavaScript master. JavaScript has the ability to modify any HTML element. 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.

6. Handling Memory Leaks

In a JavaScript environment, memory leaks are a regular problem. When you reserve memory but don’t need it or aren’t using it, this is known as a memory leak. Variables and objects are used to save memory. The result is a slowdown of runtime and, as a result, a slowing 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. Refer our article on eradicating memory leaks in JavaScript.

7. Understand The Code Of Others

There will always be someone better than you when it comes to coding with JavaScript, no matter how good you get. There will always be a better reasoning for the same problem, no matter how good your logic is. If you’re serious about becoming a JavaScript master, accepting this reality shouldn’t be an issue.

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. This will, in turn, ease out your website loading feature.

8. 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. The 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 and great books are of good authors.

9. Bookmark Reliable Sources

In the above point, we discussed that the Internet is easily accessible to everyone and hence anyone can put anything on the internet that he likes. There is no one to judge, review, etc. The other side of the internet is pretty cool. This side enables us to access anything within second and very specific. For example, if I want to learn array in JavaScript. I can just search array in JavaScript and I will read only about arrays in JavaScript. This is not the case with books where you have to find the arrays and read minimum 15-20 pages on it. Combining these two points, we come to a solution that the Internet is good till you are viewing a reliable source only. 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. One such reliable source is the Mozilla Developer Network.

10. Follow Developer Communities Such As Stack Overflow,Dev.to

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. Landing at such a firm will help you again sharpening your skills to become a JavaScript master.

11. Make use of shorthand notation (Object Literals)

When designing objects or arrays in JavaScript, line space can be saved by opting for shorthand notation. This is accomplished by setting the properties or cells of an object or array during declaration rather than after.

This saves you having to identify which object or array you’re setting for on each line, making the section easier to read. While this may seem like a small change, it can save a lot of eye strain for your team as the objects and arrays get more complex.


So, while becoming a JavaScript developer is simple, becoming a JavaScript master is a little more challenging. It is not sufficient to simply go through the concepts. It is the should to HTML that breathes life into HTML and allows you to witness gorgeous elements execute jobs you never dreamed. The elements I mentioned earlier are crucial in becoming a JavaScript expert. Keep these in mind and implement them one by one. You are ready to compete with anyone and develop anything (imagined or not) in the internet world once you have completed the goals outlined in each chapter. Cheers!

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