省市县联动（转）

<html xmlns="http://www.w3.org/1999/xhtml">
<head>
    <title></title>
    <script type="text/javascript">
    //示例数据，数据的不同，获取数据的方法是不同的
      var data = { "浙江省": { "湖州市": ["德清县","长兴县","安吉县","吴兴区","南浔区"], "杭州市": ["上城区", "下城区", "西湖区"] },
                   "河南省": {"洛阳市":["孟津县","新安县","栾川县"],"新乡市":["新乡县","获嘉县","长垣县","封丘县"],"周口市":["鹿邑县","太康县","郸城县","淮阳县"]},
                   "北京市": {"北京市":["昌平区","海淀区","怀柔县","延庆县"]}
                      };

    window.onload = function () {
      //填充省数据
      for (p in data) {
        var sheng = document.getElementById("province");
        sheng.options[sheng.options.length] = new Option(p, p);
      }
      setCity()
    }

    function setCity()
    {
      var sheng = document.getElementById("province");
      var shi = document.getElementById("city");
      shi.options.length = 0;
      var selected_sheng = sheng.options[sheng.selectedIndex].value;
      for (c in data[selected_sheng]) {

        shi.options[shi.options.length] = new Option(c, c);
      }
      setCountry()
    }
    function setCountry() {
      var sheng = document.getElementById("province");
      var shi = document.getElementById("city");
      var xian = document.getElementById("country");
      var selected_sheng = sheng.options[sheng.selectedIndex].value;
      var selected_shi = shi.options[shi.selectedIndex].value;

省市县联动（转）

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