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Old 09-18-2003, 05:07 PM   #1
Linh
Member
 
Registered: Apr 2003
Posts: 178

Rep: Reputation: 30
Bug A Javascript that will not allowed alphabet character type into a text box


A Javascript that will not allowed alphabet character type into a text box. I cannot get it to work. When an alphabet character is pressed, nothing should be entered into the text box

Code:
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML>

<HEAD>
<TITLE>Map Drive Example</TITLE>
<SCRIPT lang="JScript">


function showDialog(txtDriveLetter)
  {
    if (txtDriveLetter != 0 && txtDriveLetter != 1 &&
	txtDriveLetter != 2 && txtDriveLetter != 3 &&
	txtDriveLetter != 4 && txtDriveLetter != 5 &&
	txtDriveLetter != 6 && txtDriveLetter != 7 &&
	txtDriveLetter != 8 && txtDriveLetter != 9)
      alert("Only numeric is allowed");

  }


</SCRIPT>
</HEAD>

<BODY>

  <LABEL for="txtDriveLetter" tabindex="3">Drive Letter:</LABEL> <INPUT type="text" id="txtDriveLetter" maxlength=2 onkeydown='showDialog(txtDriveLetter.value)'>
    <BR>

</BODY>

</HTML>
 
Old 09-20-2003, 06:42 AM   #2
amirspl
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Registered: Sep 2003
Location: australia
Posts: 8

Rep: Reputation: 0
function checkRefid(field) {
var valid = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789"
var ok = "yes";
var temp;
for (var i=0; i<field.value.length; i++) {
temp = "" + field.value.substring(i, i+1);
if (valid.indexOf(temp) == "-1") ok = "no";
}
if (ok == "no") {
alert("Invalid entry! Only characters and numbers (no spaces) are accepted! for a reference name");
field.focus();
field.select();
}}

Try this - place in the string valid only what you wish the user to use and you should be ok???
 
Old 09-22-2003, 11:15 AM   #3
Linh
Member
 
Registered: Apr 2003
Posts: 178

Original Poster
Rep: Reputation: 30
reply to amirspl

Hi amirspl. Thank you so much for your help.
 
  


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