Realizing the three-level linkage effect of provinces and municipalities based on jquery_jquery

This article has updated the three-level linkage data of provinces and municipalities of the project. The latest updated data is available in Sansha, Hainan, and is shared with all friends who need it.
JQUERY + JSON, no database, pure JS code, no encryption, no compression, can be used directly in any project.

Note: The data comes from the official website of the National Bureau of Statistics.

First picture:

Bind to provinces and cities

How to use:

1. Quote JQUERY

 <script type="text/javascript" src="http://apps.bdimg.com/libs/jquery/1.11.1/jquery.min.js"></script>

2. Quoting provincial and municipal data

<script type="text/javascript" src="pdata.js"></script>

3. HTML code:

<div class="row">
 <div class="col-sm-12">
  <div class="form-group">
   <label class="control-label col-sm-2">所在区域</label>
   <div class="col-sm-3">
    <select name="input_province" id="input_province" class="form-control">
    </select>
   </div>
   <div class="col-sm-3">
    <select name="input_city" id="input_city" class="form-control">
    </select>
   </div>
   <div class="col-sm-3">
    <select name="input_area" id="input_area" class="form-control">
    </select>
   </div>
  </div>
 </div>
</div>

4. JS code:

$(function () {
  var html = "<option value=''>== 请选择 ==</option>"; $("#input_city").append(html); $("#input_area").append(html);
  $.each(pdata,function(idx,item){
   if (parseInt(item.level) == 0) {
     html += "<option value='" + item.names + "' exid='" + item.code + "'>" + item.names + "</option>";
    }
  });
  $("#input_province").append(html);

  $("#input_province").change(function(){
   if ($(this).val() == "") return;
   $("#input_city option").remove(); $("#input_area option").remove();
   var code = $(this).find("option:selected").attr("exid"); code = code.substring(0,2);
   var html = "<option value=''>== 请选择 ==</option>"; $("#input_area").append(html);
   $.each(pdata,function(idx,item){
    if (parseInt(item.level) == 1 && code == item.code.substring(0,2)) {
      html += "<option value='" + item.names + "' exid='" + item.code + "'>" + item.names + "</option>";
     }
   });
   $("#input_city").append(html);  
  });

  $("#input_city").change(function(){
   if ($(this).val() == "") return;
   $("#input_area option").remove();
   var code = $(this).find("option:selected").attr("exid"); code = code.substring(0,4);
   var html = "<option value=''>== 请选择 ==</option>";
   $.each(pdata,function(idx,item){
    if (parseInt(item.level) == 2 && code == item.code.substring(0,4)) {
      html += "<option value='" + item.names + "' exid='" + item.code + "'>" + item.names + "</option>";
     }
   });
   $("#input_area").append(html);  
  });
  //绑定
  $("#input_province").val("广东省");$("#input_province").change();
  $("#input_city").val("深圳市");$("#input_city").change();
  $("#input_area").val("罗湖区");

 });

Source code download: "Realizing the three-level linkage effect of provinces and municipalities based on jquery"

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