How to show a greeting based on the time of day

This little JS snippet, when used on your form, will record a message based on the current time of day. The message, recorded to a hidden field on the form can be used on the form to show a friendly greeting "Good Afternoon!" or used on an email. 

Just add a field to your form named 'greeting' and then use a Custom JavaScript Form Action with the following code:

// This function will receive the field and form objects. 
function(field,form){
  var d = new Date();
  var time = d.getHours();
  var greeting = undefined;
  if (time < 12) {
  greeting = "Good Morning!"
  }
  if (time === 12) {
  greeting = "Good Noon!"
  }
  if(time > 12){
  greeting = "Good Afternoon!"
  }
  if (time > 18) {
  greeting = "Good Evening!"
  }
  form.getFieldByName("greeting").setValue(greeting)
}

The code will populate the field [greeting] with a greeting message based on their computer's time.