Why wouldn't this work ? Anybody know ? The error I get is JavaScript runtime error: Unable to get property 'value' of undefined or null reference
When debug the function it says -> tel Undefined
function ValidatePhone(tel) {
var error = "";
var stripped = tel.value.replace(/[\.\@\!\#\$\%\^\&\*\=\_\|\ ]/g, '');
if (tel.value == "") {
error = "You didn't enter a phone number.\n";
} else if (isNaN(parseInt(stripped))) {
error = "The phone number contains illegal characters.\n";
} else if (!(stripped.length == 10)) {
error = "The phone number is the wrong length. Make sure you included an area code.\n";
}
return error;
}
<asp:TextBox ID="txtphone" runat="server" Width="100 ...
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