基于输入和<ul>元素的角度过滤器不起作用

Question

选择自定义下拉列表，使用＆＃34;输入＆＃34;和＆＃34; ul li＆＃34;元件。

当按下li元素时，li的值设置为输入，但不会发生过滤。当我写入＆＃34;输入＆＃34;手动一切正常

如何设置数据输入？

HTML

<div class="drop-down-input select-style-input selected">
                       <input ng-model="keyword.classname" id="simple_2" class="drop-down-select" placeholder="input text" type="text">
                       <ul  class="dropdown-list" style="display: none;">
                           <li ng-repeat="feedback in feedbacks">{{feedback.classname}}</li>

                       </ul>
                   </div>

<div class="feedback-container">
    <div ng-repeat="feedback in feedbacks | filter:keyword" class="feedback-row gt-clear group group-content">
        <div class="gt-left">
            <div class="ava-round-small"></div>
        </div>
        <div class="gt-left right-side-fcontent">
            <div class="students-name"> {{feedback.username}}</div>
            <div class="text-feedback">{{feedback.feedback}}</div>
            <div class="feedback-img">
                <img src="#" width="100" height="100">
            </div>
        </div>
    </div>

</div>

我的JS

$(function() {
                $('.drop-down-input').click(function() {
                $('.drop-down-input.selected').removeClass('selected'); // Forget the previous selection
                 $(this).addClass('selected');
                $(this).find(".dropdown-list").show();
                });

                $(document).on("click", ".drop-down-input.selected li",
                        function(e) {
                         e.stopPropagation();
                         $('.drop-down-input.selected .dropdown-list').hide().siblings().val($(this).html());
                        });
                });
                $(document).mouseup(function (e){
                 var container = $(".dropdown-list");

                if (!container.is(e.target)
                   && container.has(e.target).length === 0)
                {
                  container.hide();
                }
                });