解决 联动加载后，初始值丢失的问题

resources/views/filter/multipleselect.blade.php

@@ -3,7 +3,7 @@
         <span class="input-group-text bg-white text-capitalize"><b>{!! $label !!}</b></span>
     </div>
 
-    <select class="form-control {{ $class }}" name="{{$name}}[]" multiple style="width: 100%;">
+    <select class="form-control {{ $class }}" name="{{$name}}[]" multiple style="width: 100%;" data-value="{{implode(',',(array) $value)}}">
         @foreach($options as $select => $option)
             <option value="{{$select}}" {{ in_array((string)$select, (array) $value)  ?'selected':'' }}>{{$option}}</option>
         @endforeach