这篇文章主要为大家详细介绍使用原生js、或jquery来实现省市县三级联动下拉框的功能。具有一定的参考价值，感兴趣的小伙伴们可以参考一下
原生js的实现
<!DOCTYPE html>
<html>
<head>
<title></title>
<meta charset="utf-8">
</head>
<body>
<select>
<option>---请选择省---</option>
</select>
<select>
<option>---请选择市---</option>
</select>
<select>
<option>请选择县</option>
</select>
<script type="text/javascript">
var proArr = ["安徽","河南","河北","江苏"];
var cityArr = [
["合肥","蚌埠","亳州","阜阳"],
["郑州","开封","商丘","焦作"],
["石家庄","邯郸","衡水"],
["苏州","杭州","无锡","南京"]
]
var couArr = [
[
["合县1","合县2","合县3","合县4"],
["蚌县1","蚌县2","蚌县3","蚌县4"],
["亳县1","亳县2","亳县3","亳县4"],
["阜县1","阜县2","阜县3","阜县4"],
],
[
["郑县1","郑县2","郑县3","郑县4"],
["开县1","开县2","开县3","开县4"],
["商县1","商县2","商县3","商县4"],
["焦县1","焦县2","焦县3","焦县4"],
],
[
["石县1","石县2","石县3","石县4"],
["邯县1","邯县2","邯县3","邯县4"],
["衡县1","衡县2","衡县3","衡县4"],
],
[
["苏县1","苏县2","苏县3","苏县4"],
["杭县1","杭县2","杭县3","杭县4"],
["无县1","无县2","无县3","无县4"],
["南县1","南县2","南县3","南县4"],
],
]
var sltNope = document.getElementsByTagName("select");
var Index1 = 0;
createNope(proArr,0);
sltNope[0].onchange = function(){
sltNope[1].length = 1;
sltNope[2].length = 1;
Index = this.selectedIndex-1;
createNope(cityArr[Index],1);
}
sltNope[1].onchange = function(){
sltNope[2].length = 1;
createNope(couArr[Index][this.selectedIndex-1],2);
}
function createNope(Arr,sum){
for (x = 0;x<Arr.length;x++) {
var topy = document.createElement('option');
topy.innerHTML = Arr[x];
sltNope[sum].appendChild(topy);
}
}
</script>
</body>
</html>jquery的实现
<!DOCTYPE html>
<html>
<head>
<title></title>
<meta charset="utf-8">
<script type="text/javascript" src="jquery-3.1.1.js"></script>
</head>
<body>
<select>
<option>---请选择省---</option>
</select>
<select>
<option>---请选择市---</option>
</select>
<select>
<option>请选择县</option>
</select>
<script type="text/javascript">
var proArr = ["安徽","河南","河北","江苏"];
var cityArr = [
["合肥","蚌埠","亳州","阜阳"],
["郑州","开封","商丘","焦作"],
["石家庄","邯郸","衡水"],
["苏州","杭州","无锡","南京"]
]
var couArr = [
[
["合县1","合县2","合县3","合县4"],
["蚌县1","蚌县2","蚌县3","蚌县4"],
["亳县1","亳县2","亳县3","亳县4"],
["阜县1","阜县2","阜县3","阜县4"],
],
[
["郑县1","郑县2","郑县3","郑县4"],
["开县1","开县2","开县3","开县4"],
["商县1","商县2","商县3","商县4"],
["焦县1","焦县2","焦县3","焦县4"],
],
[
["石县1","石县2","石县3","石县4"],
["邯县1","邯县2","邯县3","邯县4"],
["衡县1","衡县2","衡县3","衡县4"],
],
[
["苏县1","苏县2","苏县3","苏县4"],
["杭县1","杭县2","杭县3","杭县4"],
["无县1","无县2","无县3","无县4"],
["南县1","南县2","南县3","南县4"],
],
]
createNope(proArr,0);
$("select")[0].onchange = function(){
$("select")[1].length = 1;
$("select")[2].length = 1;
Index = this.selectedIndex-1;
createNope(cityArr[Index],1);
}
$("select")[1].onchange = function(){
$("select")[2].length = 1;
createNope(couArr[Index][this.selectedIndex-1],2);
}
function createNope(Arr,sum){
$.each(Arr,function(index,value){
$("select").eq(sum).append("<option>"+value+"</option>");
})
}
</script>
</body>
</html>jquery的插件实现：
distpicker是一款可以实现中国省市区地址三级联动jQuery插件。它使用简单，简单设置即可完成中国省市区地址联动效果。
是时候和 jQuery 说拜拜了么？
在网络上也时不时会看到，“是时候和jQuery说拜拜了”，最著名的莫过于在2013年的这篇文章You Might Not Need jQuery。
前端程序员应该知道的15个jQuery小技巧
15个jQuery小技巧:返回顶部按钮，预加载图像，检查图像是否加载，自动修复破坏的图像，悬停切换类，禁用输入字段，停止加载链接，淡入/滑动切换，简单的手风琴...
Jquery插件开发的方法总汇
jquery插件是用来扩展jquery对象的一种方法，它的使用方法是通过jquery对象$来调用。其中Jquery插件开发一共有三种方式：$.extend()，$.fn，$.widget()
JQuery 自动触发事件
在JQuery中，可以使用trigger()方法完成模拟操作,trigger()方法不仅能触发浏览器支持的具有相同名称的事件，也可以触发自定义名称的事件。rigger(type[，data])方法有两个参数
高版本jquery中attr和prop的区别
在高版本的jquery引入prop方法后，什么时候该用prop？什么时候用attr？对于HTML元素本身就带有的固有属性，在处理时，使用prop方法。对于HTML元素我们自己自定义的DOM属性，在处理时，使用attr方法。
原生js中DOM对象转成jQuery对象、jQuery 对象转成 DOM 对象的实现
jquery是对js语言的封装、扩展，实现了对浏览器的兼容，使用jquery能让操作更方便简洁，这篇文章主要讲解原生js中Dom对象和jquery对象的相互转换。
jquery分页插件pagination.js报错pagination is not a function的bug解决方法
在使用jquery.pagination.js插件的时候，会出现pagination is not a function的错误，这是什么原因导致的呢？这里为大家整理一下，请对比自己的代码参考！
jQuery 常用小技巧分享
整理一些简单技巧的集合，帮你提升 jQuery 技能，你可以直接拿来使用，下面内容包括：禁止右键点击、隐藏搜索文本框文字、隐藏搜索文本框文字、在新窗口中打开链接、检测浏览器...
jquery动画实现_浅谈jQuery之动画
jQuery提供了JS未能提供的动画效果，利用jQuery的动画效果，可以极大的简化JS动画部分的逻辑，包括：滑入滑出动画、淡入淡出动画、显示隐藏动画、停止动画、自定义动画
jQuery如何为指定标签添加和删除一个样式
在网页的实际应用中，需要根据不同的条件来改变元素的CSS样式，通过动态的给元素添加删除一个CSS类可以实现此功能，下面通过实例来介绍一下如何实现此种功能。
内容以共享、参考、研究为目的,不存在任何商业目的。其版权属原作者所有,如有侵权或违规,请与小编联系!情况属实本人将予以删除!