// Get the "Is important?" field var myBoolField = SPUtility.GetSPField('Is important?'); // Set the field to "yes" (checked) myBoolField.SetValue(true); // Set the field to "no" (not checked) myBoolField.SetValue(false); // Get the value: true or false var value = myBoolField.GetValue(); // Make the field read only myBoolField.MakeReadOnly(); // Allow the user to edit the field again myBoolField.MakeEditable(); // Hide the field myBoolField.Hide();