基本思想就是：在JS动态创建select控件的option,通过Ajax获取在PHP从SQL数据库获取的省市区信息，代码有点长，但很多都是类似的，例如JS中省、市、区获取方法类似，PHP中通过参数不同执行不同的select语句。
index.html代码：
复制代码 代码如下:
BR>"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
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