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Forms >>> Decimals Allowed.

Allows the user to enter a number with up to 2 decimal places in a text box. In other words, 99 is ok, 99.9 is ok, 99.99 is ok, but 99.999 is rejected. You can easily change the number of decimal places that are permitted. (i.e. 1, 2, 3, etc.) For the example, enter a number with up to 2 decimal places then try entering one with more than 2 decimal places.

Please enter a number with up to 2 decimal places:

Add the below code to the <body> section of your page:

<script language="javascript" type="text/javascript">
/* Visit http://www.yaldex.com/ for full source code
and get more free JavaScript, CSS and DHTML scripts! */
<!-- Begin
function checkDecimals(fieldName, fieldValue) {

decallowed = 2;  // how many decimals are allowed?

if (isNaN(fieldValue) || fieldValue == "") {
alert("Oops!  That does not appear to be a valid number.  Please try again.");
fieldName.select();
fieldName.focus();
}
else {
if (fieldValue.indexOf('.') == -1) fieldValue += ".";
dectext = fieldValue.substring(fieldValue.indexOf('.')+1, fieldValue.length);

if (dectext.length > decallowed)
{
alert ("Oops!  Please enter a number with up to " + decallowed + " decimal places.  Please try again.");
fieldName.select();
fieldName.focus();
      }
else {
alert ("That number validated successfully.");
      }
   }
}
//  End -->
</script>
<form>
Please enter a number with up to 2 decimal places:  <br>
<input type=text name=numbox>
<input
type=button name=ok value="Ok" onClick="checkDecimals(this.form.numbox, this.form.numbox.value)">
</form>

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