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How can I submit a form depend on the input?

Posted on 1998-10-08
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Last Modified: 2013-12-25
There is an input box in my asp, like this" <form name="frmSave1" method="POST" action="/cargo/save.asp">
<p><input type="text" name="T1" size="5"> ...."
if T1 is A~Z ,submit the form,else don't submit it.
How can I do this?Thank you very much!!
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Question by:lijin1
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6 Comments
 
LVL 75

Expert Comment

by:Michel Plungjan
ID: 1828973
<SCRIPT LANGUAGE="JavaScript"><!--

// --------------------------------------------------------------------
// COMPANY:       Netscape Communications
// AUTHOR:        Robert W. Husted
// DATE CREATED:  March 17, 1997
// MODIFIED BY:
// DATE MODIFIED:
// --------------------------------------------------------------------

// CHECK STRING - ENSURE ALL CHARACTERS ARE LETTERS
function toAlpha(checkString)
{
    newString = "";    // REVISED/CORRECTED STRING
    count = 0;         // COUNTER FOR LOOPING THROUGH STRING

    // LOOP THROUGH STRING CHARACTER BY CHARACTER
    for (i = 0; i < checkString.length; i++) {
        ch = checkString.substring(i, i+1);

        // ENSURE CHARACTER IS AN ALPHA CHARACTER
        if ((ch >= "a" && ch <= "z") || (ch >= "A" && ch <= "Z" )) {
            newString += ch;
        }
    }

    if (checkString != newString) {
      // VERIFY WITH USER THAT IT IS OKAY TO REMOVE INVALID CHARACTERS
      if (confirm("The value you have entered\ncontains invalid characters,\nis it okay to remove them?")) {
        // RETURN REVISED STRING
        return newString;
      } else {
        // RETURN ORIGINAL STRING
        return checkString;
      }
    }
    return checkString;
}

/* This is added by me */
function checkSubmit(theForm) {
   Text = theForm.T1.value;
   ChkText = toAlpha(Text);
   if ( Text == ChkText ) return true;
   else {
      theForm.T1.value = ChkText;
      retun false;
   }
}
//--></SCRIPT>
<form name="frmSave1" method="POST" action="/cargo/save.asp" onSubmit="return checkSubmit(this)">
<p><input type="text" name="T1" size="5">
</FORM>
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LVL 75

Expert Comment

by:Michel Plungjan
ID: 1828974
Oops, typo - retun should be return:

   else {
        theForm.T1.value = ChkText;
        retun false;
   }

should be

  else {
          theForm.T1.value = ChkText;
          return false;
   }
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Author Comment

by:lijin1
ID: 1828975
Thank you very much, mplungjan.
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LVL 10

Expert Comment

by:MasseyM
ID: 1828976
Why was this rejected?  
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LVL 75

Expert Comment

by:Michel Plungjan
ID: 1828977
Thanks MasseyM, I was wondering the same thing, perhaps the wrong radio was selected?

Michel
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LVL 75

Accepted Solution

by:
Michel Plungjan earned 800 total points
ID: 1828978
I will reanswer this in case Lijin1 just went away, not to come back...

Michel
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