Was soll ich tun, wenn das Auswahlfeld von Lauii nicht angezeigt wird?

<div class="layui-form-item">
    <label class="layui-form-label">执行人员</label>
    <div  style="width: 150px;display: inline-block;" >
      <select name="city">
        <option value="">选择部门</option>
        <option value="0">北京</option>
      </select>
       </div>---
        <div style="width: 150px;display: inline-block;">
      <select name="city" >
        <option value="">选择人员</option>
        <option value="0">张三</option>
      </select>
 </div>
 
 <button type="button" class="layui-btn" id="addpeop">
  <i class="layui-icon">&#xe608;</i>
</button>
</div>
<script>
$(function(){
$("#addpeop").click(function(){
var peop=$("#addpeod");
var t=$([&#39;<label class="layui-form-label"></label>&#39;,
       &#39;<div  style="width: 150px;display: inline-block;" >&#39;,
               &#39;<select name="city">&#39;,
           &#39;<option value="">选择部门</option>&#39;,
          &#39;<option value="0">北京</option>&#39;,
         &#39;</select>&#39;,
          &#39;</div>---&#39;,
           &#39;<div style="width: 150px;display: inline-block;">&#39;,
        &#39; <select name="city" >&#39;,
          &#39; <option value="">选择人员</option>&#39;,
               &#39;<option value="0">张三</option>&#39;,
               &#39;</select>&#39;,
       &#39;</div>&#39;,
       &#39;<button type="button" class="layui-btn layui-btn-xs layui-btn-danger" id="del">删除</button>&#39;].join(&#39;&#39;));
t.find(&#39;#del&#39;).on(&#39;click&#39;, function(){
t1.remove();
        });
peop.append(t);
   
})
})
</script>

layui.use('form', function(){
  var form = layui.form; //只有执行了这一步，部分表单元素才会自动修饰成功
  
  //……
  
  //但是，如果你的HTML是动态生成的，自动渲染就会失效
  //因此你需要在相应的地方，执行下述方法来手动渲染，跟这类似的还有 element.init();
  form.render();
});