如何使用Node写入文件

const fs = require('fs')

const content = 'Some content!'

fs.writeFile('/Users/flavio/test.txt', content, (err) => {
  if (err) {
    console.error(err)
    return
  }
  //file written successfully
})

const fs = require('fs')

const content = 'Some content!'

try {
  const data = fs.writeFileSync('/Users/flavio/test.txt', content)
  //file written successfully
} catch (err) {
  console.error(err)
}

fs.writeFile('/Users/flavio/test.txt', content, { flag: 'a+' }, (err) => {})

const content = 'Some content!'

fs.appendFile('file.log', content, (err) => {
  if (err) {
    console.error(err)
    return
  }
  //done!
})