I want the contents of a file to be put in a textbox without refreshing

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  • shankari07
    New Member
    • Sep 2007
    • 16
    #1

    I want the contents of a file to be put in a textbox without refreshing

    hi guys,
    I have a form in html which has the city drop down. when clicking the drop down a javascript is called and a file(test.txt) is created and the city is written into the file.

    Through php i want to open the same file(test.txt), fetch the values and display it in a text box without refreshing or reloading the form. Is it possible.

    After refreshing it works but i want without refreshing the form.

    here is the code.



    Code:
    Code: ( text )
(javascript)
function addToList_city(city) 
{
var c =document.assess_form.cit.value;
 
var fso = new ActiveXObject("Scripting.FileSystemObject");
var s = fso.CreateTextFile("C://test.txt", true);
s.write(c)
 
}


    Code: ( php )
    [PHP]$filename = "c://test.txt";
    if (file_exists($f ilename)) {

    $fp = fopen($filename ,'r');
    $citfile= fread($fp, filesize($filen ame));
    }
    @unlink($filena me);[/PHP]



    )


    [HTML]<html>
    <form name = assess_form.php >
    <select name="cit" onchange="addTo List_city(this. form)">
    <option value="h"> Haryana </option>
    <option value = "c">Chennai </option>
    </select>

    <input type="text" name="city" value="<? echo $citfile ?>">
    </form>
    </html>[/HTML]
    Tags: None
    • pshm
      New Member
      • Mar 2008
      • 20
      #2
      hi,
      you need to go for AJAX... I think this will help you.

      [code=html]
      <script type="text/javascript">
      <!--
      var xmlHttpObj;

      function getXMLHttpObjec t()
      {
      var xmlHttp=null;

      try{

      xmlHttp=new XMLHttpRequest( );
      }catch (e){

      try{
      xmlHttp=new ActiveXObject(" Msxml2.XMLHTTP" );
      }catch (e){
      try{
      xmlHttp=new ActiveXObject(" Microsoft.XMLHT TP");
      }catch (e){
      alert("Your browser does not support AJAX!");
      return false;
      }
      }
      }
      return xmlHttp;
      }

      function getTextFromPHP( ){

      try{

      xmlHttpObj=getX MLHttpObject();

      if(xmlHttpObj == null){
      alert('Initiali zation/ObjectCreation faild');
      return false;
      }


      xmlHttpObj.onre adystatechange= changeState;

      }catch(err){
      alert('Error :' + err.description );
      }

      var strURL="textLoa d.php"; // url for the .php file here


      xmlHttpObj.open ("GET",strURL,t rue);
      xmlHttpObj.send (null);

      return false;
      }

      function changeState(){
      if(xmlHttpObj == null){
      alert('Initiali zation faild');
      return false;
      }

      switch(xmlHttpO bj.readyState){
      case 0:
      JavaScript:wind ow.status='Curr ent Status :The request is not initialized';
      break;

      case 1:
      JavaScript:wind ow.status='Curr ent Status :The request has been set up';
      break;

      case 2:
      JavaScript:wind ow.status='Curr ent Status :The request has been sent';
      break;

      case 3:
      JavaScript:wind ow.status='Curr ent Status :The request is in process';
      break;

      case 4:
      JavaScript:wind ow.status='Curr ent Status :The request is complete';
      document.getEle mentById('city' ).value = xmlHttpObj.resp onseText;

      break;
      }
      return true;
      }
      //-->
      </script>

      <body>
      <form name = "assess_form.ph p" action="#">
      <select name="cit" onchange="getTe xtFromPHP();">
      <option value="h"> Haryana </option>
      <option value = "c">Chennai </option>
      </select>
      <input type="text" name="city" id="city" />
      </form>
      </body>
      [/code]

      a small change in php code

      [code=php]
      // file name : textLoad.php
      $filename = "c://test.txt";
      if (file_exists($f ilename)) {

      $fp = fopen($filename ,'r');
      $citfile= fread($fp, filesize($filen ame));
      echo $citfile
      }
      @unlink($filena me);
      [/code]

      regards,
      Psh:)

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