layui使用及簡單的三級聯動實現教程

阿新 • • 發佈：2020-12-02

LayUI的使用

1 、引用

1、下載：官網：https://www.layui.com

2、使用方法：直接將解壓好的壓縮包拖拽到專案內

將以下匯入到html中：

 <link rel="stylesheet" href="/自己的地址/./layui/css/layui.css" rel="external nofollow" media="all">
 <script type="text/javascript" src="../自己的地址+/layui/layui.js"></script>

2、輸出： hello world

<script type="text/javascript" src="./jquery-3.0.0/jquery-3.0.0.min.js"></script> 
 <!-- 直接將解壓的檔案輔助到專案 然後匯入layui.css和layui.js -->
 <script type="text/javascript" src="../day/layui/css/layui.css"></script>
 <script type="text/javascript" src="../day/layui/layui.js"></script>
 <!--提示：如果是採用非模組化方式（最下面有講解），此處可換成：./layui/layui.all.js -->
 <script type="text/javascript" src="./layui/layui.all.js"></script>
</head>
<body>

 <script>
  // layui.use(['layer','form'],function(){
  // var layer = layui.layer
  //,form = layui.form;
  // layer.msg('Hello World');
  // });
  
  $(function(){
   layer.msg('Hello World');
  })
 </script> 

</body>
</html>

3、基於layui三級聯動

layui使用及簡單的三級聯動實現教程

html
<!DOCTYPE html>
<html>
<head>
 <meta charset="utf-8">
 <meta name="viewport" content="width=device-width,initial-scale=1,maximum-scale=1">
 <title>基於 Layui form 元件的省市區聯動選擇的實現</title>
 
 <script type="text/javascript" src="./jquery-3.0.0/jquery-3.0.0.min.js"></script> 
 <link rel="stylesheet" href="layui/css/layui.css" /> 
 <script src="layui/css/layui.css"></script>
 <script type="text/javascript" src="layui/layui.js"></script> 
 <script type="text/javascript" src="./data.js"></script>
 <script type="text/javascript" src="/province.js"></script>
 <script type="text/javascript">
  var defaults = {
   s1: 'provid',s2: 'cityid',s3: 'areaid',v1: null,v2: null,v3: null
  };
 
 </script>
</head>
<body>
 <div style="width:800px;margin:50px auto;">
  <form class="layui-form">
   <div class="layui-form-item">
    <label class="layui-form-label">選擇地區</label>
    <div class="layui-input-inline">
     <select name="provid" id="provid" lay-filter="provid">
      <option value="">請選擇省</option>
     </select>
    </div>
    <div class="layui-input-inline">
     <select name="cityid" id="cityid" lay-filter="cityid">
      <option value="">請選擇市</option>
     </select>
    </div>
    <div class="layui-input-inline">
     <select name="areaid" id="areaid" lay-filter="areaid">
      <option value="">請選擇縣/區</option>
     </select>
    </div>
   </div>
  </form>
 </div>
</body>
</html>

province.js
var defaults = {
 s1: 'provid',v3: null
};
var $form;
var form;
var $;
layui.define(['jquery',function () {
 $ = layui.jquery;
 form = layui.form;
 $form = $('form');
 treeSelect(defaults);
});
function treeSelect(config) {
 config.v1 = config.v1 ? config.v1 : 110000;
 config.v2 = config.v2 ? config.v2 : 110100;
 config.v3 = config.v3 ? config.v3 : 110101;
 $.each(threeSelectData,function (k,v) {
  appendOptionTo($form.find('select[name=' + config.s1 + ']'),k,v.val,config.v1);
 });
 form.render();
 cityEvent(config);
 areaEvent(config);
 form.on('select(' + config.s1 + ')',function (data) {
  cityEvent(data);
  form.on('select(' + config.s2 + ')',function (data) {
   areaEvent(data);
  });
 });

 function cityEvent(data) {
  $form.find('select[name=' + config.s2 + ']').html("");
  config.v1 = data.value ? data.value : config.v1;
  $.each(threeSelectData,v) {
   if (v.val == config.v1) {
    if (v.items) {
     $.each(v.items,function (kt,vt) {
      appendOptionTo($form.find('select[name=' + config.s2 + ']'),kt,vt.val,config.v2);
     });
    }
   }
  });
  form.render();
  config.v2 = $('select[name=' + config.s2 + ']').val();
  areaEvent(config);
 }
 function areaEvent(data) {
  $form.find('select[name=' + config.s3 + ']').html("");
  config.v2 = data.value ? data.value : config.v2;
  $.each(threeSelectData,vt) {
      if (vt.val == config.v2) {
       $.each(vt.items,function (ka,va) {
        appendOptionTo($form.find('select[name=' + config.s3 + ']'),ka,va,config.v3);
       });
      }
     });
    }
   }
  });
  form.render();
  form.on('select(' + config.s3 + ')',function (data) { });
 }
 function appendOptionTo($o,v,d) {
  var $opt = $("<option>").text(k).val(v);
  if (v == d) { $opt.attr("selected","selected") }
  $opt.appendTo($o);
 }
}
=======================================================================================
data資料
var threeSelectData={"北京":{val:"110000",items:{"北京":{val:"110100",items:{"東城區":"110101","西城區":"110102","崇文區":"110103","宣武區":"110104","朝陽區":"110105","豐臺區":"110106","石景山區":"110107","海淀區":"110108","門頭溝區":"110109","房山區":"110111","通州區":"110112","順義區":"110113","昌平區":"110114","大興區":"110115","懷柔區":"110116","平谷區":"110117","密雲縣":"110228","延慶縣":"110229"}}}}

總結

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