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10 common mistakes front end developers tend to make

Wed Dec 01 2021  ·  


 ·  5 min read
mistakes by frontend developer

First and foremost, if you're unfamiliar with software development then let me brief you about what a frontend developer is. Frontend developers are responsible for integrating design and functionality together. They are the glue that holds together the gorgeous pictures created by designers with the functionality and logic created by backend developers, ensuring that websites appear and work as they should. Frontend developers produce what you see and interact with on every website you visit. Every project would have at least one back-end and one front-end developer.

Here are the common mistakes that frontend developers make while working on a project:

      Pay close attention to the details

Frontend developers strive to implement designs to the nth degree, or as near to it as feasible. The problem is that reality often hits hard on otherwise lovely ideas that aren't practical, aren't suitable with multiple screen sizes, or aren't compatible with anything else. As a result, your site or mobile app will appear weird and broken and will not resemble the lovely pages your designer envisioned.

role of frontend developer

      Cross-browser compatibility

Because each browser renders pages differently, developers must thoroughly test the site across all browsers to assure cross-browser compatibility. It's a time-consuming procedure, but if you care about the customer experience, you'll understand why. Browser Stack, Cross Browser Testing, Lambda Test, and more technologies are available to assist with testing.

      Images that aren't optimized

It's a common front-end blunder. When you evaluate the outcome of your work in a local setting, where everything "downloads" instantaneously, it's easy to overlook bandwidth utilization and cause your website's download time to be extremely long. There have been a lot of times that the embedded images were 4 MB in size and showed as 200 x 150px thumbnails, wasting a lot of bandwidth.

image optimization


When you access a website, a video starts screaming in your ears. While developers are attempting to avoid it, they utilize the property 'auto play' in the source tag of the video and set it to "false." The problem is that "autoplay" is not a Boolean variable; it does not function according to "true" or "false" criteria.

     Mobile Media Queries are underappreciated.

Because they don't have to in 99 percent of cases, back-end engineers aren't used to verifying that changes they make are also functional with mobile devices. Back-end engineers often make a modification, test it on a desktop breakpoint, and then flag it as finished. If you routinely forget to test your changes on mobile devices, you might want to consider starting all frontend work on mobile-first.

      HTML or XHTML that isn't up to date

Another typical blunder is HTML syntax incompatibility. HTML5 provides a new, simpler syntax than HTML4 or the now-defunct XHTML. For example, void components like "input," "br," and "img" can be used to substitute self-close tags. Although utilizing self-closed tags will have no effect on the page, they should not be used on a regular basis. The greatest suggestion we can give is to learn the new HTML5 syntax and stick with it.

      Input validation is often overlooked.

Don't assume that your users will enter the correct information in the correct fields. Using input validation always is strongly recommended. It guarantees that the proper data is kept in the correct format in your database, is a good UX practice, and is extremely important for your security, as it prevents injection attacks, system breaches, and memory leaks.

      SEO that isn't working

As a frontend developer, you must use appropriate SEO practices because half of search engine optimization is determined by how the code is written. Despite this, developers frequently overlook procedures such as providing alt attributes for photos on the site. The problem is that crawlers look at the alt attributes to see how relevant each picture is to your site. People cannot locate undeclared photos in their searches since they are regarded as ornamental and are ignored. However, if you have essential photographs, such as portraits of your staff or other images related to your business, you'll want search engines to recognize them.


   Image optimization is skipped.

If pictures are not optimized, loading them on a web page consumes a lot of bandwidth. Compression should not be used on all photos since it degrades image quality. However, there's no rule for your image to be 15MB.

  Font Styling Issues

Frontend developers don't have the luxury of prodding a designer for input and must choose font styles alone, they must consider several aspects. The three most significant factors are font size, colour, and backdrop. The text must not be excessively large or tiny; it must be visible and simple to read. Also, keep in mind that your content must be responsive.

We hope this post is useful to you, whether you are new to frontend development or just wish to improve. And, at the end of the day, don't be too harsh on yourself. We're all human, and we're all prone to making errors.

Also read: Web application design and development


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Web & App Development
Software Development
Product Recommendation
Mobile App Development
User Experience

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