How to read a local text file?

Question

I’m trying to write a simple text file reader by creating a function that takes in the file’s path and converts each line of text into a char array, but it’s not working.

Answer 1

Try creating two functions:

function getData(){       //this will read file and send information to other function
       var xmlhttp;

       if (window.XMLHttpRequest) {
           xmlhttp = new XMLHttpRequest();               
       }           
       else {               
           xmlhttp = new ActiveXObject("Microsoft.XMLHTTP");               
       }

       xmlhttp.onreadystatechange = function () {               
           if (xmlhttp.readyState == 4) {                   
             var lines = xmlhttp.responseText;    //*here we get all lines from text file*

             intoArray(lines);     *//here we call function with parameter "lines*"                   
           }               
       }

       xmlhttp.open("GET", "motsim1.txt", true);
       xmlhttp.send();    
}

function intoArray (lines) {
   // splitting all text data into array "\n" is splitting data from each new line
   //and saving each new line as each element*

   var lineArr = lines.split('\n'); 

   //just to check if it works output lineArr[index] as below
   document.write(lineArr[2]);         
   document.write(lineArr[3]);
}