7.3.1.b getInstanceDocument() method throws DOMException (non-normative) blue 7.3.1.b getInstanceDocument() method throws DOMException (non-normative) This test case uses Javascript to execute the getInstanceDocument() method. You may have seen a message box with the value "DOMException". try { var model = document.getElementById('my_model1'); var inst1 = model.getInstanceDocument('my_INVALID'); var my_color = inst1.getElementsByTagName('color')[0]; alert(my_color.textContent); } catch(DOMException) { alert('DOMException'); }