在准备好服务器后
html部分
<div> <select> <option value="">请选择省份</option> </select> <select> <option value="">请选择城市</option> </select> <select> <option value="">请选择区域</option> </select> </div>
样式部分
<style> div { text-align: center; } select { width: 150px; height: 30px; } </style>
js部分
<script> var a = 0; var b = 0; var d=null; $.ajax({ type:'get', url:'http://127.0.0.1:6562/0929/area-json.js', success: function(data){ d = JSON.parse(data.slice(10,-1)); //获取json数据并转化为数组数据 $.each(d,function(index,ele){ $('<option value = ""></option>').appendTo('#province').text(ele.name);//把省的数据插入列表中 }) } }) $('#province').on('change',function(e){ //当省变化时 $.ajax({ type:'get', url:'http://127.0.0.1:6562/0929/area-json.js', success: function(data){ d=JSON.parse(data.slice(10,-1)); a = e.target.selectedIndex - 1; //当前下拉列表下标 if(a == -1){ $('#city').html('<option value="">请选择城市</option>'); $('#district').html('<option value="">请选择区域</option>'); }else{ $('#city').html('<option value="">请选择城市</option>'); $('#district').html('<option value="">请选择区域</option>'); if(d[a].children){ $.each(d[a].children,function(index,ele){ $('<option value = ""></option>').appendTo('#city').text(ele.name); }) } } } }) }) $('#city').on('change',function(e){ //当市变化时 $.ajax({ type:'get', url:'http://127.0.0.1:6562/0929/area-json.js', success: function(data){ d=JSON.parse(data.slice(10,-1)); b = e.target.selectedIndex - 1; if(b == -1){ $('#district').html('<option value="">请选择区域</option>'); }else{ $('#district').html('<option value="">请选择区域</option>'); if(d[a].children[b].children){ $.each(d[a].children[b].children,function(index,ele){ $('<option value = ""></option>').appendTo('#district').text(ele.name); }) } } } }) }) </script>
全部代码
<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <meta http-equiv="X-UA-Compatible" content="IE=edge"> <meta content="width=device-width, initial-scale=1.0"> <title>Document</title> <script src="https://cdn.bootcdn.net/ajax/libs/jquery/1.11.3/jquery.js"></script> <style> div { text-align: center; } select { width: 150px; height: 30px; } </style> </head> <body> <div> <select> <option value="">请选择省份</option> </select> <select> <option value="">请选择城市</option> </select> <select> <option value="">请选择区域</option> </select> </div> <script> var a = 0; var b = 0; var d=null; $.ajax({ type:'get', url:'http://127.0.0.1:6562/0929/area-json.js', success: function(data){ d = JSON.parse(data.slice(10,-1)); $.each(d,function(index,ele){ $('<option value = ""></option>').appendTo('#province').text(ele.name); }) } }) $('#province').on('change',function(e){ $.ajax({ type:'get', url:'http://127.0.0.1:6562/0929/area-json.js', success: function(data){ d=JSON.parse(data.slice(10,-1)); a = e.target.selectedIndex - 1; if(a == -1){ $('#city').html('<option value="">请选择城市</option>'); $('#district').html('<option value="">请选择区域</option>'); }else{ $('#city').html('<option value="">请选择城市</option>'); $('#district').html('<option value="">请选择区域</option>'); if(d[a].children){ $.each(d[a].children,function(index,ele){ $('<option value = ""></option>').appendTo('#city').text(ele.name); }) } } } }) }) $('#city').on('change',function(e){ $.ajax({ type:'get', url:'http://127.0.0.1:6562/0929/area-json.js', success: function(data){ d=JSON.parse(data.slice(10,-1)); b = e.target.selectedIndex - 1; if(b == -1){ $('#district').html('<option value="">请选择区域</option>'); }else{ $('#district').html('<option value="">请选择区域</option>'); if(d[a].children[b].children){ $.each(d[a].children[b].children,function(index,ele){ $('<option value = ""></option>').appendTo('#district').text(ele.name); }) } } } }) }) </script> </body> </html>