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三级联动效果
<html> <head> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> <title>Insert title here</title> <script type="text/javascript"> var cityList = new Array(); var quList = new Array(); cityList[‘北京‘] = [‘北京‘]; cityList[‘浙江‘] = [‘杭州市‘, ‘温州市‘, ‘金华市‘, ‘临安市‘]; cityList[‘陕西‘] = [‘西安‘, ‘宝鸡‘, ‘咸阳‘]; cityList[‘甘肃‘] = [‘兰州市‘, ‘武威市‘, ‘酒泉市‘, ‘张掖市‘]; quList[‘北京‘] = [‘1区‘, ‘2区‘, ‘3区‘, ‘4区‘]; quList[‘杭州市‘] = [‘5区‘, ‘6区‘, ‘7区‘, ‘8区‘]; quList[‘温州市‘] = [‘9区‘, ‘10区‘, ‘11区‘, ‘12区‘]; quList[‘西安‘] = [‘13区‘, ‘14区‘, ‘15区‘, ‘16区‘]; quList[‘宝鸡‘] = [‘17区‘, ‘18区‘, ‘19区‘, ‘20区‘]; quList[‘兰州市‘] = [‘21区‘, ‘22区‘, ‘23区‘, ‘24区‘]; window.onload = allData; function allData() { var shengfen = document.getElementById(‘shengfen‘); for(var sf in cityList) { shengfen.add(new Option(sf, sf)); } } function changeCity() { var chengshi = document.getElementById(‘chengshi‘); var sheng = document.getElementById(‘shengfen‘).value; chengshi.options.length = 1; for(var cs in cityList[sheng]) { chengshi.add(new Option(cityList[sheng][cs], cityList[sheng][cs])); } } function changequ() { var shiqu = document.getElementById(‘shiqu‘); var cheng = document.getElementById(‘chengshi‘).value; shiqu.options.length = 1; for(var sh in quList[cheng]) { shiqu.add(new Option(quList[cheng][sh], quList[cheng][sh])); } } </script> </head> <body> <br /> <select id="shengfen" style="width:100px" onchange="changeCity()"> <option>--选择省份--</option> </select> <select id="chengshi" style="width:100px" onchange="changequ()"> <option>--选择城市--</option> </select> <select id="shiqu" style="width:100px"> <option>--选择区县--</option> </select> </body></html>
三级联动效果
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