Sample onChange event script

This JScript sample script shows how to use an onChange event to format a phone number as it is entered.

This script attempts to format a phone number with between seven and ten digits using standard United States formatting.

// Get the field that fired the event .

var oField = event.srcElement;

// Verify that the field exists and is not null.

if (typeof(oField) != "undefined" && oField != null)

{

// Remove any non-numeric characters.

var sTmp = oField.DataValue.replace(/[^0-9]/g, "");

// If the number is an expected length and is supported, format the number.

switch (sTmp.length)

{

case "4105551212".length:

oField.DataValue = "(" + sTmp.substr(0, 3) + ") " + sTmp.substr(3, 3) + "-" + sTmp.substr(6, 4);

break;

case "5551212".length:

oField.DataValue = sTmp.substr(0, 3) + "-" + sTmp.substr(3, 4);

break;

}