How can I read a text file using Javascript?

Question

How can I read a .txt file in Javascript? I have a folder name and need to load the file present in the folder (there is only one). For example, if I have a folder called folder1 it contains 3 same txt files with different name and other files also present in that folder1 I need to read only one txt file any one.

Answer 1

maybe this

var txtFile = new XMLHttpRequest();
txtFile.open("GET", "http://my.remote.url/myremotefile.txt", true);
txtFile.onreadystatechange = function() 
{
 if (txtFile.readyState === 4)   // Makes sure the document is ready to parse.
 {
  if (txtFile.status === 200)   // Makes sure it's found the file.
   {
    allText = txtFile.responseText; 
   }
 }
}

if the files are on he client computer there could be a problem cause of security reasons i dont that it is possible.