JavaScript级联特效一
<!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><meta http-equiv="Content-Type" content="text/html; charset=utf-8" /><title></title><script type="text/javascript">function changeCity(){var province=document.myform.selProvince.value;alert(province);var newOption1,newOption2;switch(province){case "四川省":newOption1=new Option("成都","chengdu");newOption2=new Option("泸州","luzhou");break;case "湖北省":newOption1=new Option("武汉市","wuhan");newOption2=new Option("襄樊市","xiangfan");break;}document.myform.selCity.options.length=0;document.myform.selCity.options.add(newOption1);document.myform.selCity.options.add(newOption2);}</script></head><body><form name="myform"><select name="selProvince" onchange="changeCity()"><option>-请选择开户帐号的省份-</option><option value="四川省">四川省</option><option value="山东省">山东省</option><option value="湖北省">湖北省</option></select><select name="selCity"><option>-请选择开户帐号的城市-</option></select></form></body></html>
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