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Form submit button inactive

Posted on 2006-07-15
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Last Modified: 2008-01-09
I have two forms. I would like to make the second forms submit button inactive if anything is typed into the first forms 'f_name' field.

How do I do that with Javascript?

<form name="form1" method="post" action="page.html">
  <input type="text" name="f_name">
  <input type="hidden" name="step" value="2">
  <input type="submit" value="Next">
</form>

<form name="form2" method="post" action="page.html">
  <input type="hidden" name="step" value="3">
  <input type="submit" value="Skip this step">
</form>
0
Comment
Question by:silver00x00
2 Comments
 
LVL 16

Accepted Solution

by:
Joe earned 500 total points
ID: 17117990
<script language="JavaScript">
         function checkForButtonDisable(fname){
              if(fname.value.length > 0){
                 document.getElementById("skipButton").disabled = true;
              }else{
                   document.getElementById("skipButton").disabled = false;
             }
         }
</script>

<form name="form1" method="post" action="page.html">
  <input type="text" name="f_name" onchange="checkForButtonDisable(this);">
  <input type="hidden" name="step" value="2">
  <input type="submit" value="Next">
</form>

<form name="form2" method="post" action="page.html">
  <input type="hidden" name="step" value="3">
  <input type="submit" value="Skip this step" id="skipButton">
</form>
0
 

Author Comment

by:silver00x00
ID: 17135757
thanks!
0

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