为什么搜索插件要双击才能显示出来？

Question

<div id="divtest">            <div class="title">                <span class="fl">搜索插件</span>            </div>            <div class="content">                <span class="fl">用户名</span><br />                <input id="txtSearch" name="txtSearch" type="text" />                <div class="tip">                </div>            </div>        </div>                <script type="text/javascript">            $(function () {                var arrUserName = ["王五", "刘明", "李小四", "刘促明", "李渊", "张小三", "王小明"];                $("#txtSearch").autocomplete(arrUserName,{                    minChars: 0, //双击空白文本框时显示全部提示数据                    formatItem: function (data, i, total) {                        return "<I>" + data[0] + "</I>"; //改变匹配数据显示的格式                    },                    formatMatch: function (data, i, total) {                        return data[0];                    },                    formatResult: function (data) {                        return data[0];                    }                }).result(SearchCallback);                 function SearchCallback(event, data, formatted) {                    $(".tip").show().html("您的选择是：" + (!data ? "空" : formatted));                }            });        </script>    </body> 输入的时候下面不会有提示 双击选中才会有提示，为什么？

Answer 1

minChars：最小触发的字符个数。0表示双击即刻触发

Answer 2

这要看你这个autocomplete插件吧