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This article mainly explains "node.js how to achieve file batch renaming", the article explains the content is simple and clear, easy to learn and understand, the following please follow the editor's ideas slowly in depth, together to study and learn "node.js how to achieve file batch renaming" bar!

1. The readFile function is used to read the contents of the file, parse the contents, and call the callback function to pass it.

Const {readFile} = require ('fs') readFile (' iwin621.txt', 'utf8', (error, txt) = > {if (error) throw error console.log (' iwin621 text is:', txt)})

2. The writeFile function is used to write files to disk.

Const {writeFile} = require ('fs') writeFile (' iwin621.txt', 'this is a string of text content', err = > {if (err) {console.log ('write file error:', err)} else {console.log ('File written..')})

3. Readdir function

The readdir function is used to return files in a directory as an array of strings.

4. Rename function

As the name implies, the rename function is used to rename files.

5. Unlink function

The unlink function is used to delete a file.

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