nodejs outputs Chinese garbled characters-Front-end Q&A-php.cn

Home

Web Front-end

Front-end Q&A

nodejs outputs Chinese garbled characters

WBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWB

May 16, 2023 pm 08:39 PM

Node.js is a JavaScript runtime based on the Chrome V8 engine. One of its advantages is the ease with which JavaScript can be used to build server-side applications, making it a popular choice for building web applications. However, when using Node.js to output Chinese characters, you sometimes encounter the problem of garbled characters.

There are many reasons why Node.js outputs Chinese garbled characters. Below we will list some possible reasons and solutions.

Encoding issues

Node.js uses UTF-8 encoding by default, but in some cases other encoding methods may be used, resulting in garbled characters when outputting Chinese characters.

Solution: You can use the console.log() function, and use the Buffer method to convert the character set to be output to UTF-8 before outputting.

console.log(Buffer.from('Hello World', 'utf8').toString('hex')); // e6849fe696873a20476f726c64

Terminal display problem

Some terminals cannot correctly display the input characters if the character set is not set, resulting in garbled characters when outputting Chinese characters.

Solution: Set the character set in the terminal, for example, use the chcp 65001 command in the Windows command prompt. If you're using Mac OS or Linux, you can choose to use UTF-8 encoding in your terminal's settings.

The encoding method is not specified correctly

When using the built-in fs module of Node.js to read or write a text file, if the encoding method is not specified correctly Specifying the file encoding method will cause garbled characters when outputting Chinese characters.

Solution: Specify the encoding method of the file, for example:

fs.readFile('test.txt', 'utf8', function(err, data) {
  if (err) throw err;
  console.log(data);
});

HTTP response header does not specify the encoding method

When using Node.js to build the Web When applying a program, if the HTTP response header does not specify the encoding method correctly, garbled characters will appear when outputting Chinese characters.

Solution: Add the character set encoding method in the response header, for example:

res.setHeader('Content-type', 'text/html;charset=utf-8');
res.write('<html><head><title>你好</title></head><body>你好</body></html>');
res.end();

Summary:

The above are some of the current reasons that may cause Node.js to output Chinese garbled characters and solutions. You need to pay attention to these issues during development and adopt correct processing methods when outputting Chinese characters.

The above is the detailed content of nodejs outputs Chinese garbled characters. For more information, please follow other related articles on the PHP Chinese website!

Statement

The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn

What is useEffect? How do you use it to perform side effects?Mar 19, 2025 pm 03:58 PM

The article discusses useEffect in React, a hook for managing side effects like data fetching and DOM manipulation in functional components. It explains usage, common side effects, and cleanup to prevent issues like memory leaks.

Explain the concept of lazy loading.Mar 13, 2025 pm 07:47 PM

Lazy loading delays loading of content until needed, improving web performance and user experience by reducing initial load times and server load.

What are higher-order functions in JavaScript, and how can they be used to write more concise and reusable code?Mar 18, 2025 pm 01:44 PM

Higher-order functions in JavaScript enhance code conciseness, reusability, modularity, and performance through abstraction, common patterns, and optimization techniques.

How does currying work in JavaScript, and what are its benefits?Mar 18, 2025 pm 01:45 PM

The article discusses currying in JavaScript, a technique transforming multi-argument functions into single-argument function sequences. It explores currying's implementation, benefits like partial application, and practical uses, enhancing code read

How does the React reconciliation algorithm work?Mar 18, 2025 pm 01:58 PM

The article explains React's reconciliation algorithm, which efficiently updates the DOM by comparing Virtual DOM trees. It discusses performance benefits, optimization techniques, and impacts on user experience.Character count: 159

How do you prevent default behavior in event handlers?Mar 19, 2025 pm 04:10 PM

Article discusses preventing default behavior in event handlers using preventDefault() method, its benefits like enhanced user experience, and potential issues like accessibility concerns.

What is useContext? How do you use it to share state between components?Mar 19, 2025 pm 03:59 PM

The article explains useContext in React, which simplifies state management by avoiding prop drilling. It discusses benefits like centralized state and performance improvements through reduced re-renders.

What are the advantages and disadvantages of controlled and uncontrolled components?Mar 19, 2025 pm 04:16 PM

The article discusses the advantages and disadvantages of controlled and uncontrolled components in React, focusing on aspects like predictability, performance, and use cases. It advises on factors to consider when choosing between them.

See all articles