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

如果你有多个属性在你的选择，这个肮脏的hack工作:

var multipleSelect = $('select[name="list_type"]');
multipleSelect.select2();
multipleSelect.parent().find('.select2-search--inline').remove();
multipleSelect.on('change', function(){
    multipleSelect.parent().find('.select2-search--inline').remove();
});

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

在他们的示例页面上:https://select2.org/searching#hiding-the-search-box

$(".js-example-basic-hide-search").select2({
  minimumResultsForSearch: Infinity
});

//readonly on all select2 input
$(".select2-search input").prop("readonly", true);

我编辑了select2.min.js文件，将生成的select-2__search输入字段设置为readonly="true"。

版本4.0.3

尽量不要将用户界面需求与JavaScript代码混合在一起。

你可以在标记中用属性隐藏搜索框:

data-minimum-results-for-search = "无限"

标记

<select class="select2" data-minimum-results-for-search="Infinity"></select>

例子

$(document).ready(function() { $(".select2").select2(); }); <link href="https://cdnjs.cloudflare.com/ajax/libs/select2/4.0.3/css/select2.min.css" rel="stylesheet" /> <script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script> <script src="https://cdnjs.cloudflare.com/ajax/libs/select2/4.0.3/js/select2.min.js"></script> <label>without search box</label> <select class="select2" data-width="100%" data-minimum-results-for-search="Infinity"> <option>one</option> <option>two</option> </select> <label>with search box</label> <select class="select2" data-width="100%"> <option>one</option> <option>two</option> </select>