javascript - Laravel product filter with checkboxes

I have modelProduct, and I have scope Filter:

public function scopeFilter($query)
{
    if (request('min') && request('max')) {
        $query->where('price', '<=', request('max'))->where('price', '>=', request('min'));
    }

    if (request('attr')) {
        $query->whereHas('attribute', function ($q) {
            $q->whereIn('attribute_value_id', explode(',', request('attr')));
        });
    }

    return $query;
}
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And I have frontend checkboxes with name attributes:

@foreach($category->attribute as $attribute)

  <section >
    <h3 >
      {{ $attribute->getTranslatedAttribute('title') }}
      <span onclick="$('#filter-{{ $attribute->id }}').slideToggle();">
        <i ></i>
      </span>
    </h3>
    <div id="#filter-{{ $attribute->id }}">
      <form id="from-{{ $attribute->id }}" action="" method="GET">
        <div >
          @foreach($attribute->attributeValue as $value)
            <div >
              <div >
                <input 
                    type="checkbox" 
                    id="filter-{{ $value->id }}" 
                    name="attr" 
                    value="{{ $value->id }}" 
                    onclick="this.checked ? checkFunc() : removeFunc()" 
                    @if(request('attr') && in_array($value->id, explode(',', request('attr')))) checked @endif>

                <label for="filter-{{ $value->id }}">{{ $value->getTranslatedAttribute('value') }}</label>
              </div>
            </div>
          @endforeach
        </div>
      </form>
    </div>
  </section>
@endforeach

@section('js')
  <script>
    var url = '?attr=';
    function checkFunc() {
      var id = $("[name=attr]:checked").map(function () {
           return this.value;
        }).get().join(",");


      @if(request('attr'))
        window.location.href = url + "{{ request('attr') }}," + id;
      @else
        window.location.href = url + id; 
      @endif
    };
  </script>
 @endsection
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Filters working, but my Javascript code working badly. When I click on checkbox, and later want uncheck him, it doesn't work. And multiple click checkbox also not working, In get param I get duplicate attributes. How I can fix this?