A.〈script language=“JavaScript” language=“show.js”〉〈/script〉 B.〈script language=“JavaScript” type=“show.js”〉〈/script〉 C.〈script language=“JavaScript” src=“show.js”〉〈/script〉 D.〈script language=“JavaScript” runat=“show.js”〉〈/script〉
A.cssB.htmlC.scriptD.js
A.isNaN() B.parseInt() C.Number() D.parseFloat()