你可以为minimumResultsForSearch选项设置无穷大或-1

解决方案1

裁判:https://select2.org/searching # limiting-display-of-the-search-box-to-large-result-sets

$('select').select2({
    minimumResultsForSearch: -1
});

解决方案2

裁判:https://select2.org/searching # hiding-the-search-box

$('select').select2({
   minimumResultsForSearch: Infinity
});

我喜欢根据选择中的选项数量动态地执行此操作;隐藏搜索选择与10或更少的结果，我做:

$fewResults = $("select>option:nth-child(11)").closest("select");
$fewResults.select2();
$('select').not($fewResults).select2({ minimumResultsForSearch : -1 });

试试这个CSS

input[aria-controls=select2-product-type-results]{
  display: none;
}

这个输入是搜索字段

//Disable a search on particular selector
$(".my_selector").select2({
    placeholder: "ÁREAS(todas)",
    tags: true,
    width:'100%',
    containerCssClass: "area_disable_search_input" // I add new class 
});

//readonly prop to selector class
$(".area_disable_search_input input").prop("readonly", true);

对于多选你必须写js代码，没有设置属性。

$('#js-example-basic-hide-search-multi').select2();

$('#js-example-basic-hide-search-multi').on('select2:opening select2:closing', function( event ) {
    var $searchfield = $(this).parent().find('.select2-search__field');
    $searchfield.prop('disabled', true);
});

这一点在他们的页面上提到了:https://select2.org/searching#multi-select

如果你想隐藏在初始打开，你正在通过ajax调用填充下拉列表，在你的select2声明的ajax块中添加以下内容:

beforeSend: function () 
  {
    $('.select2-search--dropdown').addClass('hidden');
  }

然后在ajax请求成功后再次显示它(并聚焦):

  success: function() {
      $('.select2-search--dropdown').removeClass('select2-search--hide'); // show search bar then focus
      $('.select2-search__field')[0].focus();
  }