Node.js / 删除文件中的内容

Node.js / Delete content in file

提问by user937284

I want to delete the content of a simple text file with node.js. Or replace the file with a new/empty one.

我想用 node.js 删除一个简单文本文件的内容。或者用新的/空的文件替换文件。

How can I achieve this in node?

如何在节点中实现这一点？

回答by Andbdrew

You are looking for fs.truncateor fs.writeFile

您正在寻找fs.truncate或fs.writeFile

Either of the following will work:

以下任一方法都有效：

const fs = require('fs')
fs.truncate('/path/to/file', 0, function(){console.log('done')})

or

或者

const fs = require('fs')
fs.writeFile('/path/to/file', '', function(){console.log('done')})

There are also synchronous versionsof both functionsthat you should not use.

也有同步版本的两种功能，你不应该使用。

回答by Peter Lyons

fs.unlinkis the call you need to delete a file. To replace it with different contents, just overwrite it with fs.writeFile.

fs.unlink是删除文件所需的调用。要用不同的内容替换它，只需用fs.writeFile.