<!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>
效果：
时间： 2024-08-05 13:30:07