我不知道你如何让你自动完成的结果，但如果如你得到它的$ .getJSON（）调用，填充组合的项目根据其结果（不只是给调用的结果直到控制）可以检查是否result.length == 0，如果是的话，加入其他的东西（像元件说preSS输入创建）来组合。

I don't know how you get you're autocomplete results, but if for example you're getting it in a $.getJSON() call, and filling the combo's items based on the result (and not just giving the result of the call straight to the control) you could check whether the result.length == 0, and if so, add something else (like an element saying "Press Enter to create") to the combo.

请表现出一定的code，如果你想要更多的precise答案！

Please show some code, if you want more precise answer!