Improve company productivity with a Business Account.Sign Up

x
  • Status: Solved
  • Priority: Medium
  • Security: Public
  • Views: 491
  • Last Modified:

How can i read a *.txt file in javascript

i want to read some javascript inputs from a text file for my HTML file.
0
renjitkumar
Asked:
renjitkumar
  • 3
  • 2
2 Solutions
 
Tomarse111Commented:
Without any additional addons, this can only be done through AJAX. Please see below for an example ... where the test.txt is in the same dir as the file you're working on.
<html>
<head>
<script>
function submitForm()
{ 
    var xhr; 
    try {  xhr = new ActiveXObject('Msxml2.XMLHTTP');   }
    catch (e) 
    {
        try {   xhr = new ActiveXObject('Microsoft.XMLHTTP');    }
        catch (e2) 
        {
          try {  xhr = new XMLHttpRequest();     }
          catch (e3) {  xhr = false;   }
        }
     }
  
    xhr.onreadystatechange  = function()
    { 
	
         if(xhr.readyState==4)
         {
              	if(xhr.status  == 200){ 
                  document.write("Received:"  + xhr.responseText); 
				  return false;
				}
         }
    }; 
 
   xhr.open('GET', "test.txt",  true); 
   xhr.send(null); 
} 
</script>
</head>
                 
<body>
    <FORM method="POST" name="ajax" action="">                  
         <INPUT type="BUTTON" value="Submit"  ONCLICK="submitForm()">
        
    </FORM>
 </body>
</html>

Open in new window

0
 
renjitkumarAuthor Commented:
i tried this option. but i have proble to refer the file path. because will available in desktop only not in HTML section.
0
What Kind of Coding Program is Right for You?

There are many ways to learn to code these days. From coding bootcamps like Flatiron School to online courses to totally free beginner resources. The best way to learn to code depends on many factors, but the most important one is you. See what course is best for you.

 
renjitkumarAuthor Commented:
i foud the solution myself; below is the source code of my query

<html>
<head>
<script language="JavaScript" type="text/javascript">
var text;

function fetchText(txtFile) {
var d = document;
var txtFrame = d.getElementById( 'textReader');
txtFrame.src = txtFile;
setTimeout('text = getContent();', 500);
}

function getContent() {
var d = document;
var txtFrame = d.getElementById( 'textReader');
var text = '';
if (txtFrame.contentDocument) {
var d = txtFrame.contentDocument;
text = d.getElementsByTagName( 'BODY')[ 0].innerHTML;

}
else if (txtFrame.contentWindow) {
var w = txtFrame.contentWindow;
text = w.document.body.innerHTML;

}
return text;
}

function doTest(txtFile, searchFor) {
fetchText(txtFile);
setTimeout("alert(-1 != text.indexOf('" + searchFor + "'))", 750);
}
</script>
</head>
<body>
<iframe id="textReader" style="display: none;" ></iframe>
<form>
<input type="button" value="search test 1 - will pass" onclick="doTest('C:/test.txt', 'HTML page')" />
</form>
</body>
</html>
0
 
GawaiCommented:
go ahead for that, next time when you will ask any question, experts will think twice before they post their solution, i guess we have given you proper direction for the solution. Enjoy !
0
 
GawaiCommented:
did u know u can split the points ? Tomarse111 deserve as well
0
Question has a verified solution.

Are you are experiencing a similar issue? Get a personalized answer when you ask a related question.

Have a better answer? Share it in a comment.

Join & Write a Comment

Featured Post

What Kind of Coding Program is Right for You?

There are many ways to learn to code these days. From coding bootcamps like Flatiron School to online courses to totally free beginner resources. The best way to learn to code depends on many factors, but the most important one is you. See what course is best for you.

  • 3
  • 2
Tackle projects and never again get stuck behind a technical roadblock.
Join Now