javascript - 我的 Select2 Matcher 功能有问题吗？

Question

我正在尝试使用匹配器来过滤掉特定的值，例如当用户键入“o”时，Omega 就会出现，但是使用匹配器时，我仍然得到所有 testdata.json 值，而不仅仅是过滤后的值。请帮我检查我哪里出错了。

// html file 

<select  type="search" placeholder="Search...." id="searchbar-top" class="form-control"> 
    <option></option>
</select>

<script>
    

    $(document).ready(function(){
      $("#searchbar-top").select2({

        matcher: function(term, text) {
          console.log("this is text:" , text)
          return text.toUpperCase().trim().indexOf(term.toUpperCase().trim())==0;
      },
        allowClear:true,
        minimumInputLength: 1,
        placeholder: "Search...",
        templateResult: formatState,
        width:'100%',
        debug:true,
        
        ajax:{
         url:"/data",
          type:"get",
          dataType:"json", 
          data:function(params){
              return {
                searchTerm:params.term 
              };
            },

            processResults: function(data){
              return{
                results: $.map(data.content , function(item){
                  return {text:item.text , id:item.id}
                })
              }
            },
        },
    });


   function formatState (text) {
         str ="";
         str += "<p style='padding-left: 12px;'>"+ text.text + "</p>";
         var $state = $(str);
         return $state;
      };
    })
  </script>

//testdata.json
{"content" : [
    { "id": 0, "text": "Rolex Daytona" },
    { "id": 1, "text": "Rolex GMT Master II " },
    { "id": 2, "text": "Rolex Submariner" },
    { "id": 3, "text": "Rolex Datejust" },
    { "id": 4, "text": "Rolex Day-Date" },
    { "id": 4, "text": "Rolex Morphin" },
    { "id": 4, "text": "Rolex Nalgene" },
    { "id": 4, "text": "Rolex AKG" },
    { "id": 5, "text": "Omega Speedmaster" },
    { "id": 6, "text": "Omega Seamaster" },
    { "id": 7, "text": "Omega Constellation" },
    { "id": 8, "text": "Omega Deville" },
    { "id": 9, "text": "Omega Deneve" },
    { "id": 10,"text": "Cartier Tank" },
    { "id": 11,"text": "Cartier Ballon Bleu" },
    { "id": 12,"text": "Cartier Santos" },
    { "id": 13,"text": "Cartier Pasha" },
    { "id": 14,"text": "Cartier Panthara" },
    { "id": 15,"text": "Tissot Heritage" },
    { "id": 16,"text": "Tissot T-Sport" },
    { "id": 17,"text": "Tissot T-Classic" },
    { "id": 18,"text": "Tissot Touch" },
    { "id": 19,"text": "Tissot Touch" }
  ]}

是的，所以基本上我使用 ajax 函数从 testdata.json 调用数据，我的匹配器函数有问题吗？