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Populate second text box based on value extracted from first text box

82 New Member
Hi,
I have to extract the value entered in the first text box and based on the value entered have to populate the second text box.
Eg:if the value entered in first text box is like home/version then I have to extract the home and version entered in the text box and the second text box should contain home/version along with that it should contain additional say date information home/version/date.
Can somebody help me do it?

Thanks
Oct 15 '08
51 6887
sarega
82 New Member
if the function is not present in the present page then how do I access that function in the javascript function??
Oct 16 '08 #11
acoder
16,027 Recognized Expert Moderator MVP
Then include it using script tags, e.g.
Expand|Select|Wrap|Line Numbers
  1. <script type="text/javascript" src="file.js"></script>
Oct 16 '08 #12
sarega
82 New Member
Actually what I wanted is the values b[0] and b[1] has to be passed to a php function where the processing will be done and then the result of that php function has to be returned to the setAttribute.
Oct 16 '08 #13
acoder
16,027 Recognized Expert Moderator MVP
Why didn't you say that earlier?! ;)

What you need is Ajax (if you want to avoid a page reload) unless you can convert the PHP function to JavaScript. If you're new to Ajax, check out the links in the Off-site Links sticky.
Oct 16 '08 #14
sarega
82 New Member
Expand|Select|Wrap|Line Numbers
  1. <?php
  2.      $c=$_GET['c'];
  3.      $d=$_GET['d'];
  4.      if($c=="cat") {
  5.         $e=$d.$c;
  6.         }
  7.      ?>
  8. <script type='text/javascript'>
  9. function test1()
  10. {
  11.      var a = document.getElementById("first").value;
  12.      var b = a.split('/');
  13.       var d =b[0];
  14.       var c = b[1];
  15.       if( b[0] ==  "dog"){
  16.       location.href="c.php?d="+d+"&c="+c;
  17.        var js= <?php echo $e; ?>
  18.        document.getElementById("second").setAttribute("value",js);
  19.        }
  20. }
  21.  
  22. </script>
  23. <body>
  24. <input type="text" id="first" size="40" onKeyUp="test1();"/><br><br>
  25. <input type="text" id="second" size="40"/>
  26. </body>
  27.  
what is wrong with this code??
Oct 16 '08 #15
acoder
16,027 Recognized Expert Moderator MVP
A lot. You need to put the PHP code in a separate file. To use Ajax, you need to use the XMLHttpRequest object, not location.href. Get a simple Ajax page working first and then extend to your particular problem.
Oct 16 '08 #16
sarega
82 New Member
I am new to this javascript so can anyone please tell me how can my problem be solved using ajax.
Thanks
Oct 16 '08 #17
acoder
16,027 Recognized Expert Moderator MVP
Have you tried one or two of the tutorials in the thread I linked to? Get that working and understand it first, then you can work on your problem.
Oct 16 '08 #18
sarega
82 New Member
Can you please help me with the code its urgent:(
Oct 16 '08 #19
acoder
16,027 Recognized Expert Moderator MVP
I can't do it for you, but I can help. Is the latest version of your code still the one you posted in post #15?
Oct 16 '08 #20

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