what does UTF mean

In Node.js, “UTF” stands for Unicode Transformation Format. UTF is a character encoding scheme that represents Unicode characters using variable-length encoding. It allows representing a wide range of characters from different writing systems and languages.

In the context of Node.js, “UTF” is commonly used in combination with string encoding and decoding operations. Node.js provides several built-in string encoding options, including UTF-8, UTF-16LE, UTF-16BE, and UTF-32LE. These encodings determine how characters are represented in binary form.

When working with text data in Node.js, it’s important to specify the correct encoding to ensure proper handling and interpretation of characters. UTF-8 is the most commonly used encoding, as it supports the representation of the entire Unicode character set while being backward compatible with ASCII.

For example, when reading a file using the fs module, you can specify the encoding option to indicate how the file’s contents should be interpreted:

const fs = require('fs');

fs.readFile('file.txt', 'utf-8', (err, data) => {
  if (err) {

  // Process the data as UTF-8 encoded text

In the above example, fs.readFile() reads the contents of the file 'file.txt' and decodes it as UTF-8-encoded text. The resulting data variable will hold a JavaScript string with the decoded text.

By using the appropriate UTF encoding, you can ensure that your Node.js applications handle text data correctly, regardless of the characters and languages involved.

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