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This article mainly introduces "how to write high-quality and clean code in web development". In daily operation, I believe that many people have doubts about how to write high-quality and clean code in web development. The editor consulted all kinds of materials and sorted out simple and easy-to-use methods of operation. I hope it will be helpful to answer the doubts of "how to write high-quality and clean code in web development". Next, please follow the editor to study!

The benefits of writing clean code

Let's start with some of the benefits of writing clean code. One of the main benefits is that clean code reduces the time spent reading and understanding the code. Messy code can slow down any developer, making the developer's job more difficult. The more messy the code, the more time it takes for developers to fully understand it so that they can use it. Moreover, if the code is too messy, the developer may decide to stop reading the code and write it from scratch.

1. It's easier to start and continue a project.

Let's start with a simple example to illustrate the problem. Suppose we go back to a previous project after a long time, during which time maybe a customer contacted us to do another job. Now, imagine how bad and messy it would be if you didn't write clean code at that time. And you can see how difficult it is to code from where you left in the first place.

So now we have to spend more time on the project because we need to understand the code we wrote earlier. This could have been avoided if clean code had been written in the first place, but now you have to pay the price. Moreover, the old code is so messy and bad that we may decide to start from scratch. Customers may not be happy when they hear the news.

On the other hand, clean code usually doesn't have this problem. Assuming that the previous example is the opposite, and the previous code is clean and elegant, how long does it take to understand it? It may only take a few minutes of code to understand how it all works, and we may have been writing it for a while, so in this case it will take significantly less effort than the first case, and the customer won't care too much.

This is the first benefit of writing clean code, and it applies not only to your own projects, but also to the work of other developers. Clean code can start work faster, and no one needs to spend hours studying the code. Instead, we can go straight to work.

two。 It is beneficial to the training of new employees in the team

Another benefit of writing clean code is closely related to the first benefit, which is that it makes it easier and faster for new employees to use code. Suppose we need to hire a developer, how long will it take her to understand the code and learn to use it? Of course, it depends on the situation. If our code is messy and poorly written, she needs to spend more time learning the code. On the other hand, if the code is clean, easy to read and easy to understand, she will be able to start her work faster.

Some people might say that this is not a problem because other developers can help her. Of course this is true, but help should only take a very short time, two or three times or a day or two, not two or three weeks. So the purpose of the decision to hire another developer is to speed up our work, not to slow it down, or to spend more time helping her learn to use code.

When we try to write clean code, others will learn from us and it will be easier to write clean code. Of course, you still need to set aside some time to help every new developer understand and understand the code. Of course, I mean days, not weeks. In addition, clean code will help the team bring more developers and at the same time help them understand the code. In a nutshell, the more concise the code, the easier it is to explain and the fewer misunderstandings.

3. It is easier to follow the coding mode

One thing to keep in mind is that understanding and learning how to use code is the same thing. However, this is just the beginning, and we need to make sure that developers are willing to follow our coding pattern. Of course, it is easier to achieve this goal with clean code than messy code. This is important because the team not only wants to write clean code, but also maintains this pattern all the time, which requires long-term thinking.

In addition, what if the developer does not follow the current coding pattern? This problem can usually be solved by itself. Suppose there is a group of people working on the same code and one of them starts to deviate from the standard style. Then, the rest of the team will push the developer to follow the standards. She will take the advice because she doesn't want to leave the team.

In another case, the developer will persuade the rest of the team to adopt and follow their own coding model. If the coding pattern proposed by the developer is cleaner and leads to better results, this is certainly a good thing. Indeed, writing and keeping clean code does not mean that any opportunity to improve it should be ignored. I think you should always maintain an improved attitude towards current practices and strive to find opportunities for improvement.

Therefore, if a developer deviates from the current pattern and her model is better, then it may be more appropriate for us to make a change. So before trying other models, we should not ignore other people's coding practices, and we should continue to look for room for improvement. Finally, the third case. The developer decided neither to adopt our practice nor to persuade us to adopt hers. Because she will decide to leave the team.

Sports Acrobatics

Now, in addition to discussing the benefits of writing clean code, it's time to learn some skills to help us achieve this goal. As you will see below, clean code contains and follows some methods. These methods make the code cleaner, easier to read, easier to understand, and simpler. Of course, it is not necessary to implement all the methods, and implementing and following one or two measures is enough to bring positive results.

1. Write readable code

Indeed, the code written will be interpreted by the machine, but this does not mean that the readability and understandability of the code should be ignored, because there will always be another person who will use the code we write in the future. Even if we make our code inaccessible to others, we may pick it up again in the future. For these reasons, it is in our own interest to make the code easy to read and understand. So how to achieve it?

The easiest way is to use spaces. Before releasing the code, you can reduce the code, but there is no need to make it look miniaturized. Instead, indents, newlines, and blank lines can be used to make the code structure more readable. When you decide to take this approach, the readability and understandability of the code will be significantly improved. Then, looking at the code makes it easier to understand it.

two。 Use meaningful names for variables, functions, and methods

Let's take a look at the second technique, which will help us write understandable and clean code. This technique is about meaningful names for variables, functions, and methods. What does "meaningful" mean? Meaningful names are descriptive enough names, not just variables, functions, or methods that can only be understood by the writer himself. In other words, the name itself should be defined according to the content and use of the variable, function, or method.

It is important to note, however, that the use of descriptive names does not mean that you can use as many characters as you like. A good rule of thumb is to limit names to three or four words. If you need to use more than 4 words, it means that this function or method needs to perform a lot of tasks at the same time, so you should simplify the code and use only the necessary characters.

3. Let a function or method perform only one task

When you start writing code, the functions and methods used look like a Swiss Army knife that can handle almost anything, but it's hard to find a good name. In addition, few people except the writer know what a function is used for and how to use it. Sometimes I will encounter these problems, I am not very good at this.

Then someone came up with a good suggestion: let each function or method perform only one task. This simple advice changed everything and helped me write clean code, at least cleaner than before. Since then, other people have finally been able to understand my code, or they don't have to spend as much time reading the code as before, and the functions and methods have become easier to understand. With the same input, you can always produce the same output, and naming becomes much easier.

If you have difficulty finding descriptive names for functions and methods, or if you need to write lengthy instructions so that others can use them, consider this suggestion and let each function or method perform only one task. If your functions and methods seem to be as omnipotent as a Swiss Army knife, please implement this method. Believe me, this versatility is not an advantage. This is a rather unfavorable situation and may backfire.

Note: this practice of letting each function or method perform only one task is called keeping pure functions. This coding practice comes from the concept of functional programming.

4. It is easier to follow the coding mode

No matter how hard you try to come up with meaningful names for variables, functions, and methods, the code is still not completely clear and easy to understand, and there are some ideas that need to be explained. The problem may not be that the code is difficult to understand or use, on the contrary, others may not understand why the function or method is implemented, or why it is created in a particular way. It means that the intention of creating a function or method is not clear.

Sometimes you may have to use an unconventional approach to solve the problem because there is not enough time to come up with a better solution, which is difficult to explain in code. So, code comments can help solve this problem, and it can also help us explain to others why this method is written and why it is written in this particular way, so that others do not have to guess the purpose of these methods or functions.

More importantly, when we use annotations to interpret the code, others may find a better way to solve the problem and improve the code. This is possible because they know what the problem is and what the expected outcome is. If you don't know this information, it will be difficult for others to create a better solution, or they may not try because they don't see the need to modify the creator's own ideas.

Therefore, whenever you decide to use some quick fix or non-traditional method, use comments to explain why. It is best to explain it with one or two lines of comments, rather than other people's guess.

In other words, we should only use comments when necessary, rather than explaining bad code. Writing endless comments will not help turn bad code into clean code. If the code is not good, you should solve the problem by improving the code, rather than adding instructions on how to use it. It is more important to write clean code.

5. Keep the code style consistent

When we have a particular coding style or style we like, we use it everywhere. But it's not a good idea to use different coding styles in different projects, and it's impossible to go back to the previous code naturally, so it still takes some time to understand the coding styles used in the project.

A better approach is to choose a set of coding methods and stick to them in all projects. This way, it will be easier to go back to the old code. Of course, it's a good thing to try new coding methods, and it can help us find better ways to do our work. But it is best to try different coding styles on different experimental projects or exercises, rather than on major projects.

In addition, when we decide to do some experiments, we should try to practice many times and take the time to do it thoroughly. You should implement it only when you are really sure that you like it and are satisfied with it. And when you decide to do so, it's best to apply it to all projects. Yes, it takes time, and it will prompt us to think correctly.

6. Check your code.

This is the last technique. Not only to write clean code, but also to finish the final job, which is to maintain clean code. We should check the code regularly and try to improve it. Otherwise, if we don't review and update our old code, it will quickly become obsolete, just like our equipment. If you want to keep your code in a good state, you need to update it regularly.

The same is true for code that is used every day. The code will become more complex and messy, so you should avoid this and keep the code clean. The only way to do this is to check our code regularly. In other words, we need to keep it. This may not be necessary for projects that no longer care about in the future, but for others, maintaining code is part of the job.

At this point, the study on "how to write high-quality and clean code in web development" is over. I hope to be able to solve your doubts. The collocation of theory and practice can better help you learn, go and try it! If you want to continue to learn more related knowledge, please continue to follow the website, the editor will continue to work hard to bring you more practical articles!

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