Most Common JavaScript Issues Developers Face during development

At first, JavaScript may seem quite simple. Yet the language is significantly more nuanced, powerful, and complex than one would initially be led to believe. Many of JavaScript’s subtleties lead to several common problems that keep it from working that is important to be aware of and avoid in one’s quest to become a master JavaScript developer. The common errors that developers make while coding in JavaScript include mistaken thinking about how the "this" keyword works, incorrect assumptions about block scoping, and a failure to avoid memory leaks. TypeError is one of the most common errors in JavaScript apps. This error is created when some value doesn't turn out to be of a particular expected type. Some of the common cases when it occurs are: Invoking objects that are not methods.

 

These days, most cross-browser JavaScript problems are seen: When poor-quality browser-sniffing code, feature-detection code, and vendor prefix usage block browsers from running code they could otherwise use just fine. When developers make use of new/nascent JavaScript features, modern Web APIs, etc.) Authentication Without proper approval is one of the most common mistakes made by developers. The main problem or disadvantage in JavaScript is that the code is always visible to everyone anyone can view JavaScript code. No matter what proportion fast JavaScript interprets, JavaScript DOM (Document Object Model) is slow and can be a never-fast rendering with HTML.

 

Lack of the self-confidence

 

When it comes to writing perfect codes, a new developer often feels nervous. However, if you think that you are not able enough is a mistake that creates serious issues later on. That is why lack of self-confidence is one of the major mistakes made by developers, especially when they start their careers. Programming languages, at first, seem to be complex. But once you get a proper command over it, you will get to know that coding is only a game of logic(s), and there’s nothing to worry about. So, never stop your practice in coding. All these days and nights of continuous struggle in coding, non-stop code writing will come up with the results worth your battle in the end.

Practicing wrong SEO

Another mistake developers often make practicing wrong or incorrect SEO — one of the root causes of making this mistake is misinformed by SEO specialists. Many developers, especially the new ones, misunderstand that they know enough stuff about SEO, and it just does not have any complexity. It is a mistaken concept that, of course, is not valid. Mastering SEO is something that requires a significant period which is spent researching the best practices. You are not eligible to be called an SEO specialist unless you have accurate tracking and ongoing experiment.

Not testing on major browsers.

Many developers often make the mistake of testing their program on only one or two of their favorite browsers throughout their development process. It is one of the most common mistakes made by developers, especially when they start their careers. This mistake comes up with consequences like huge surprises, the most unpleasant ones. To avoid such unpleasant and problematic surprises, you need to make sure that you have tested your program in at least all the major browsers out there. These major browsers can include Firefox, Chrome, or IE7 (even if you have never been a massive fan of these, you will still need to test your program out in these browsers).

Not completing input validation

Validating user input on both the server and client sides is a must-do for developers. Mistakes regarding this user input happen too often even if we are already aware of the advice ‘do not trust user input.’ SQL injection is one of the expected consequences of which this mistake ends up. Keep in mind that a lot of front-end development frameworks there provide out-of-the-box validation rules. These rules are straightforward to use. Implementation of validation is something that seems to be time-consuming. Still, it is a practice that should always be an essential part of your programming practice, never set aside or ignored.