php+ajax做仿百度搜索下拉自动提示框(有实例)

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(193, ''Sierra Leone''),
(194, ''Singapore''),
(195, ''Slovakia''),
(196, ''Slovenia''),
(197, ''Solomon Islands''),
(198, ''Somalia''),
(199, ''South Africa''),
(200, ''South Georgia and the South Sandwich Islands''),
(201, ''Spain''),
(202, ''Sri Lanka''),
(203, ''Sudan''),
(204, ''Suriname''),
(205, ''Svalbard and Jan Mayen Islands''),
(206, ''Swaziland''),
(207, ''Sweden''),
(208, ''Switzerland''),
(209, ''Syria''),
(210, ''Taiwan''),
(211, ''Tajikistan''),
(212, ''Tanzania''),
(213, ''Thailand''),
(214, ''Togo''),
(215, ''Tokelau''),
(216, ''Tonga''),
(217, ''Trinidad and Tobago''),
(218, ''Tunisia''),
(219, ''Turkey''),
(220, ''Turkmenistan''),
(221, ''Turks and Caicos Islands''),
(222, ''Tuvalu''),
(223, ''Uganda''),
(224, ''Ukraine''),
(225, ''United Arab Emirates''),
(226, ''United Kingdom''),
(227, ''United States of America''),
(228, ''Uruguay''),
(229, ''Uzbekistan''),
(230, ''Vanuatu''),
(231, ''Vatican City''),
(232, ''Venezuela''),
(233, ''Vietnam''),
(234, ''Virgin Islands (British)''),
(235, ''Virgin Islands (US)''),
(236, ''Wallis and Futuna Islands''),
(237, ''Western Sahara''),
(238, ''Yemen''),
(239, ''Zaire''),
(240, ''Zambia''),
(241, ''Zimbabwe'');

你在本地服务器测试下 一定很给力 而且原理很简单 没那么麻烦