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 });

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>

这是最好的解决方案，干净又好用:

$("#select2Id").select2 () ;
$("#select2Id").select2 ('container').find ('.select2-search').addClass ('hidden') ;

然后，创建一个类.hidden {display;none;｝

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
});

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

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