function readTextFile(file) {
  const rawFile = new XMLHttpRequest()
  rawFile.open('GET', file, false)
  let response
  rawFile.onreadystatechange = () => {
    if (rawFile.readyState === 4 && (rawFile.status === 200 || rawFile.status == 0)) {
      response = rawFile.responseText;
    }
  }
  rawFile.send(null)
  return response
}
const finalData = readTextFile('file:///D:/CDocuments/value.txt')