AddChangeCallback

Used to respond to changes in fields and controls, with the restrictions noted under Comments, below.

Parameters

Name	Type	Description
`fieldName`	String	The name of the field to find.
`callback`	Function	The function to be invoked when the field or control changes.

Return Value

Result	Value
(none)

Example

This example registers a named function to be called on change:

function customChangeCallback()
{
    var itemType = GetFieldValue( "Item Type" );
    if ( itemType == "Defect" )
    {
         EnableField( "Steps To Reproduce " );
         DisableField( "Requested Changes" );
    }
    else
    {
         DisableField( "Steps To Reproduce" );
         EnableField( "Requested Changes" );
    }
}
AddChangeCallback("Item Type", customChangeCallback );

Comments

Callbacks are invoked in the order in which they are added. Note the following restrictions:

Field/Control Type	Field Style	Notes
Binary/Trinary	Radio buttons	Use AddRadioCallback instead.
Single Selection, Single Relational, User	Allow searching	Not supported.
Multi-Selection, Multi-Relational, Multi-User, Multi-Group	Allow searching	Before this method can be invoked to populate a searchable Multi-Group, Multi-Relational, Multi-Selection, or Multi-User field, values must be present in the left-hand box on the ListBox control.
Multi-Selection, Multi-Relational, Multi-User, Multi-Group		This method is not invoked for these field types when a user simply double-clicks a value or uses the right-hand arrow to move a value from the left-hand box on a ListBox control to the right-hand box. For the method to be invoked, the user must also click the values in the right-hand box to select them.
Text field, EditBox control		This method is invoked only after the user changes the value and moves focus out of the field or control.