Numeric field validation with commas

leoparamundayil

Apr 19th 2007, 11:32 pm

Hai Freinds,

i have a javascript problem... plz try to solve it soon
urgent

its for numeric field validation

function IsNumeric(sText){
var ValidChars = "0123456789,";
var IsNumber=true;
var Char;
for (i = 0; i < sText.length && IsNumber == true; i++){
Char = sText.charAt(i);
if (ValidChars.indexOf(Char) == -1){
IsNumber = false;
}
}
return IsNumber;
}

presently we are using the above javascript.

we allow numbers and commas

now the requirment is -

the format should be 1,234,567 or 123,456 or 12,345,678

only max 8 numbers should be allowed in textbox

but we are setting the size of textbox as 10 to allow 2 commas also...

also we should not allow 2 commas together.

can u find a solution and send it back

krakjoe

Apr 20th 2007, 12:49 am

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1" />
<title>Untitled Document</title>

<script language="javascript">
/**
Here is your actual function, I'll walk you through it
**/
function is_valid_number( int )
{
/**
Maybe not the best way, but a way to count the number
of characters in a string, note it's offset by +1
**/
if( int.split(',').length > 3 )
{
alert("Number contains more than two commas [ "+int+" ]");
return false;
}
/**
Get the length of the string without commas in
**/
else if( int.replace( /,/g, '').length > 8 )
{
alert("Number should not be more than 8 decimal digits [ "+int+" ]");
return false;
}
/**
Check for commas next to each other
**/
else if( int.match( /,,/i ) )
{
alert("Number should not have two commas next to each other [ "+int+" ]");
return false;
}
/**
Check the string has no alphabetical characters in
**/
else if( int.match( /[[a-zA-Z]/ ) )
{
alert("Numbers should not have any alphabetical characters in them");
return false;
}
/**
More else if()s here if you wanted
**/
return true;
}
/**
You do not need this function, it's just a demo of the above one
**/
function check_these_numbers( )
{
var ints = new Array( 'Hello', '1,234,567 ', '123,456', '12,345,678', '1,,5315', '123,45,8,9', '12345678910' );
counter = null;
for( counter = 0; counter < ints.length; counter++ )
{
if( is_valid_number( ints[counter] ) )
{
alert( 'The number : ' + ints[counter] + ' passed validation' );
}
else
{
alert( 'The number : ' + ints[counter] + ' failed validation' );
}
}
}
window.onload=check_these_numbers( );
</script>
</head>

<body>

</body>
</html>