Changing Field Properties Based on Date Change

To recreate these examples, your application should contain the following fields and they should be added to your custom form:

Field type	Database name	Display name	Values
`Date/Time`	DUE_DATE	Due Date	On the Options tab, select Date Only.
`User`	EMRG_APPROVER	Emergency Approver	Users assigned to roles specified for this field or added as values for the field in SBM Application Administrator.
`Text`	EMRG_REASON	SOW Number	Specified by users.

Example

In this example, when users specify a value in the Due Date field that is fewer than seven days from the current date, the Emergency Approver and Emergency Reason fields are set as required. If the Due Date field value is more than seven days past the current date, the Emergency Approver and Emergency Reason fields are removed from the form. If the due date is past January 1, 2015, users are informed that the due date is too far in the future.

function DueDateChanged()
{
    var text = GetFieldValue("DUE_DATE");
    var DueDate = new Date();
    DueDate.setTime(Date.parse(text));

    var NextWeek = new Date();
    NextWeek.setDate(NextWeek.getDate()+7);

    if (DueDate < NextWeek) {
        MakeFieldRequired("EMRG_APPROVER", true);
        MakeFieldRequired("EMRG_REASON", true);
    }
    else {
        HideField("EMRG_APPROVER");
        HideField("EMRG_REASON");
    }
 
    var FixedDate = new Date();
    FixedDate.setFullYear(2015,1,1);
    if (DueDate > FixedDate) {
        alert('Date too far in the future!');
    }
}
 
AddChangeCallback("DUE_DATE", DueDateChanged);