Is there a way to check for a day of week in the user input task using the date

You can use the weekday function in Appian as described here forum.appian.com/.../Date_and_Time_Functions.html

In javascript you can do something like:

var aDate = new Date();
var dayNumber = aDate.getDay();

I believe this returns between 0 and 6, with 0 being sunday.

I need to be able to check dynamically in an user input form for a Saturday or Sunday being selected using the date picker on that date and time field. If the user selects either of these days, I want a message field to display. So I need to set up an Event Rule on the Date field. Do you have a sample of a javascript that I can use that will show a message field if the user selects a Saturday or Sunday?

Does the weekday functions do not work dynamically in a form when a user is selecting or entering a date. If so, please give me a sample expression of how this can be done. Thanks...

philb - Just reading your comment now. Thanks...

Below code will help you to hide/show the message field based on the week day.

var d = new Date(window.FormAPI.getValue("dateTimeField").id);
if(d.getDay()==6) /* if day is saturday then show the message field */
{ //show message field }
else
{ // Hide message field }

Thanks will try that.