A.document.username.value B.document.all.username.value C.document.getElementById(“username”).value D.如果表單元素外層無表單,則可以直接使用username.value
A.document.write() B.window.write() C.document.confirm() D.write “The Undefined Function”
A.window.exit() B.window.shutdown() C.window.end() D.window.close()