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云代码 - javascript代码库

js 级联菜单

2012-09-13 作者：神马举报

[javascript]代码库

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title>js 级联菜单</title>
<style type="text/css">
#Select2 {
    width: 120px;
}
#Select1 {
    width: 100px;
}
</style>
<script type="text/javascript" language="javascript">
    var arr = new Array([ "河南省", "1", "开封市", "南阳市", "安阳市", "郑州市" ], [ "山东省",
            "2", "济南市", "日照市", "潍坊市", "菏泽市" ],
            [ "广东省", "3", "广州市", "珠海市", "深圳" ], [ "吉林省", "4", "大连市", "沈阳市",
                    "哈尔滨市", "冰城" ]);
    function shengshi() {
        for ( var i = 0; i < arr.length; i++) {
            document.getElementById("Select2").options.add(new Option(
                    arr[i][0], arr[i][1]))
        }
        ;
    }
    function getCity() {
        document.getElementById("Select1").options.length = 1;
        var k = document.getElementById("Select2").value - 1;
        for ( var j = 2; j < arr[k].length; j++) {
            document.getElementById("Select1").options.add(new Option(
                    arr[k][j], arr[k][j]))
        }
    }
</script>
</head>
<body onload="shengshi()">
<p>所在省：
  <select id="Select2" name="D2" onchange="getCity()">
    <option></option>
  </select>
  所在市：
  <select id="Select1" name="D1">
    <option></option>
  </select>
</p>
</body>
</html>