I am trying to delete a specific row from a text file using NodeJs, but I am having trouble to do so. Can anyone please help me?
This is the content inside the text file and I am trying to delete example3:example3 from the text file.
example1:example1
example2:example2
example3:example3
example4:example4
This is the code that should work but doesn't
const fs = require('fs')
const path = require('path')
const filePath = path.join(__dirname, '../data/test.txt')
const fileData = fs.readFileSync(filePath, 'utf-8').split('\r\n')
const position = 3
fileData.splice(position - 1, 1)
You need to save the file with fs.writeFile or fs.writeFileSync
Synchronous:
const fs = require('fs')
const path = require('path')
const filePath = '../data/test.txt'
const filePath = path.join(__dirname, filePath)
const fileData = fs.readFileSync(filePath, 'utf-8').split('\r\n')
const position = 3
fileData.splice(position - 1, 1)
const dataString = fileData.join('\r\n')
fs.writeFileSync(filePath, dataString)
Asynchronous:
const fs = require('fs')
const path = require('path')
const filePath = '../data/test.txt'
const filePath = path.join(__dirname, filePath )
fs.readFile(filePath, (err, data) => {
if (err) throw err
const fileData a data.split('\r\n')
const position = 3
fileData.splice(position - 1, 1)
const dataString = fileData.join('\r\n')
fs.writeFile(filePath, dataString, (err) => {
if (err) throw err
else console.log('file saved')
})
})