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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <html lang="en"> <head> <meta http-equiv="Content-Type" content="text/html;charset=UTF-8"> <title>省市二级联动</title> <script> /* 找对象，找事件，实现相应的方法 */ var sheng = [‘请选择‘,‘广东省‘,‘湖南省‘,‘湖北省‘]; var shi = [[],[‘广州市‘,‘深圳市‘,‘东莞市‘],[‘长沙‘,‘株洲‘,‘湘潭‘],[‘武汉市‘,‘咸宁市‘,‘天门市‘]]; function $(id){ return document.getElementById(id); } function createsheng(){ for(var i=0;i < sheng.length;i++){ var op = new Option(sheng[i],sheng[i]); $(‘sheng‘).options.add(op); } } function createshi(){ var shengIndex = $(‘sheng‘).selectedIndex; $(‘shi‘).length = 0; for(var i = 0;i < shi[shengIndex].length;i++){ var op = new Option(shi[shengIndex][i],shi[shengIndex][i]); $(‘shi‘).options.add(op); } } window.onload = function(){ createsheng(); $(‘sheng‘).onchange = createshi; } </script> </head> <body> 省：<select id="sheng"></select> 市：<select id="shi"></select> </body> </html>
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原文地址：http://www.cnblogs.com/bybelief/p/5186140.html
