Drop-down list from text file

1 New Member

Hi

I need to make script that creates drop-down list from text file (new line in text file – new line in drop-down list). Somebody told me that I should use Ajax and XMLHttpRequest for that, so I have found on internet script that can write content from text file on screen, but I don’t know how to modify it to write it in drop-down list.

How to add reference.value to make values for drop-down?

This is it:

Expand|Select|Wrap|Line Numbers

 
<html>

<head>

<title>XMLHttpRequest Object GET Request</title>

</head>

<body>
 
<script language="javascript" type="text/javascript">

<!--
 
  // request variable

  var request_var;
 
  // Request object method wrapper function

  function request_object()

  {

    try

    {

      return new ActiveXObject('Msxml2.XMLHTTP');

    }

      catch(e)

      {

        try

        {

        return new ActiveXObject('Microsoft.XMLHTTP');

        }

          catch(e)

          {

          return new XMLHttpRequest();

          }

      }

  }
 
  // Call the request object method wrapper function

  request_var=request_object();
 
  if(!request_var)

  {

    alert("Your Web browser does not support the XMLHttpRequest object.");

  }
 
  function load()

  {

    if(request_var.readyState==4)

    {

    document.getElementById('elements_id').innerHTML=request_var.responseText;

    }

  }
 
  function call()

  {

    if(request_var)

    {

    d=document;

    request_var.open("GET","textfile.txt",true);

    request_var.onreadystatechange=load;

    request_var.send(null);

    }

  }
 
//-->

</script>
 
<div id="elements_id"></div> 
 
<a onclick="call()" href="#">XnMLHttpRequest Object GET Request</a>

</body>

</html>

Aug 3 '06 #1

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4780

acoder

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Recognized Expert Moderator MVP

The changes that are required are:
1. parse the response instead of writing it to the screen. The response is a string. Split it into an array using the split() method.
2. Loop over the array to add the options. You can use the options array (and new Option()) or the select object's add() method to add options.

May 5 '08 #2

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