2021-07-19

<script type="text/javascript">

        $(function(){ 

            // $("head").append($("<meta http-equiv='Content-Security-Policy' content='upgrade-insecure-requests' />"))

            //取得div层 

            var pd = Common.getPdJson();

            var $search = $('#div_cname');

                //取得输入框JQuery对象 

                var $searchInput = $search.find('#gencontrolcname');

                //关闭浏览器提供给输入框的自动完成 

                $searchInput.attr('autocomplete','off');

                //创建自动完成的下拉列表,用于显示服务器返回的数据,插入在搜索按钮的后面,等显示的时候再调整位置 

                var $autocomplete = $('<div class="autocomplete"></div>').hide().insertAfter('#gencontrolcname');

                //清空下拉列表的内容并且隐藏下拉列表区 

                var clear = function(){

                    $autocomplete.empty().hide();

                }; 

                //注册事件,当输入框失去焦点的时候清空下拉列表并隐藏 

                $searchInput.blur(function(){

                    setTimeout(clear,500);

                }); 

                //下拉列表中高亮的项目的索引,当显示下拉列表项的时候,移动鼠标或者键盘的上下键就会移动高亮的项目,想百度搜索那样 

                var selectedItem = null; 

                //timeout的ID 

                var timeoutid = null; 

                //设置下拉项的高亮背景 

                var setSelectedItem = function(item){

                    //更新索引变量 

                    selectedItem = item ; 

                    //按上下键是循环显示的,小于0就置成最大的值,大于最大值就置成0 

                    if(selectedItem < 0){ 

                        selectedItem = $autocomplete.find('li').length - 1; 

                    }else if(selectedItem > $autocomplete.find('li').length-1 ) { 

                        selectedItem = 0; 

                    } 

                    //首先移除其他列表项的高亮背景,然后再高亮当前索引的背景 

                    $autocomplete.find('li').removeClass('highlight').eq(selectedItem).addClass('highlight'); 

                }; 

                var searchkey = "";

                var searchTimeout = 200;

                var timer = null;

                var ajax_request = function(){

                    var str = $("#gencontrolcname").val();

                    if(!str){

                        return;

                    }

                    if(timer != null){

                        clearInterval(timer);

                        timer =null;

                    }

                    timer = setInterval(function(){

                        if(searchkey && searchkey != str){

                            searchkey = str;

                            return;

                        }

                        clearInterval(timer);

                        searchkey = str;

                        var submitData = {};

                        // for(var key in pd){

                        //     submitData[key] = pd[key];

                        // }

                        // submitData.count = 50;

                        // submitData.search = str;

                        // submitData.customerType = "DefValAllUser";

                        // submitData.customer = pd.customer;

                        // submitData.rad = (new Date()).getTime();

                        // submitData.ISFAST = "1";

                        var submitData={

                            word:"速",

                            pageSize:50,

                            pageNum:1

                        };

                        if(str){

                               $("#labSearchLoadingText").show();//请稍后

                               Common.ajax({

                                // data:JSON.stringify(submitData),

                                // url:"http://192.168.1.185:8013/enterpriseSearchALL/?word=速&pageSize=10&pageNum=1",

                                // url:"http://192.168.1.185:8013/enterpriseSearchALL",

                                url:BasicsApi.user.getDetail,

                                data: {

                                    userId: "1"

                                },

                                // type:"get",

                                success:function(data){

                                    $("#labSearchLoadingText").hide();

                                    //清空并隐藏下拉列表 

                                    $autocomplete.empty().hide(); 

                                    if(data.reason=="ok" && data.result.items.length > 0) {

                                        //遍历data,添加到自动完成区 

                                        $.each(data.result.items, function(index,term) {

                                            //创建li标签,添加到下拉列表中 

                                            $('<li></li>').text(term.name)

                                            .appendTo($autocomplete)

                                            .attr("regStatus",term.regStatus)

                                            .attr("companyId",term.id)

                                            .attr("name",term.name)

                                            .addClass('clickable')

                                            .hover(function(){

                                                //下拉列表每一项的事件,鼠标移进去的操作 

                                                $(this).siblings().removeClass('highlight'); 

                                                $(this).addClass('highlight'); 

                                                selectedItem = index; 

                                            },function(){

                                                //下拉列表每一项的事件,鼠标离开的操作 

                                                $(this).removeClass('highlight'); 

                                                //当鼠标离开时索引置-1,当作标记 

                                                selectedItem = -1; 

                                            }).click(function(){

                                                //鼠标单击下拉列表的这一项的话,就将这一项的值添加到输入框中 

                                                $searchInput.val(term.name);

                                                //清空并隐藏下拉列表 

                                                $autocomplete.empty().hide(); 

                                            }); 

                                        });//事件注册完毕 

                                        //设置下拉列表的位置,然后显示下拉列表 

                                        var ypos = $searchInput.position().top; 

                                        var xpos = $searchInput.position().left; 

                                        $autocomplete.css('width',$searchInput.css('width')); 

                                        $autocomplete.css({'position':'absolute','left':xpos + "px",'top':(ypos + 30) +"px","z-index":9999,"max-height":200}); 

                                        setSelectedItem(0);

                                        //显示下拉列表 

                                        $autocomplete.show();

                                    }else{

                                        console.log(data.reason)

                                    }

                                }

                            });


                        }

                    },searchTimeout);


                }; 

                //对输入框进行事件注册 

                $searchInput.keyup(function(event) {

                    //字母数字,退格,空格 

                    if(event.keyCode > 40 || event.keyCode == 8 || event.keyCode ==32) {

                        //首先删除下拉列表中的信息 

                        $autocomplete.empty().hide();

                        clearTimeout(timeoutid);

                        timeoutid = setTimeout(ajax_request,400);

                    }else if(event.keyCode == 38){

                        //上 

                        //selectedItem = -1 代表鼠标离开 

                        if(selectedItem == -1){

                            setSelectedItem($autocomplete.find('li').length-1); 

                        }else{

                            //索引减1 

                            setSelectedItem(selectedItem - 1); 

                        }

                        event.preventDefault(); 

                    }else if(event.keyCode == 40) {

                        //下 

                        //selectedItem = -1 代表鼠标离开 

                        if(selectedItem == -1){ 

                            setSelectedItem(0); 

                        }else{ 

                            //索引加1 

                            setSelectedItem(selectedItem + 1); 

                        }

                        event.preventDefault(); 

                    }

                }).keypress(function(event){

                    //enter键 

                    if(event.keyCode == 13) {

                        //列表为空或者鼠标离开导致当前没有索引值 

                        if($autocomplete.find('li').length == 0 || selectedItem == -1) {

                            return; 

                        }

                        $searchInput.val($autocomplete.find('li').eq(selectedItem).attr("name"));

                        $autocomplete.empty().hide(); 

                        event.preventDefault(); 

                    }

                }).keydown(function(event){

                    //esc键 

                    if(event.keyCode == 27 ) {

                        $autocomplete.empty().hide(); 

                        event.preventDefault(); 

                    }

                });

        });

    </script>



css

/*搜索下拉样式*/

.autocomplete{

    background-color: #fff;

    border: 1px solid rgba(227,227,227,1);

    border-bottom-left-radius: 4px;

    border-bottom-right-radius: 4px;

    padding: 4px;

    overflow-y: auto;

}

.autocomplete li {

    padding: 5px;

    cursor: pointer;

    width: 100%;

    min-height: 30px;

    box-sizing: border-box;

    transition: all 1s ease 0s;

    overflow: hidden;

    text-overflow: ellipsis;

    white-space: nowrap;

    list-style-type: none;

}

.autocomplete li:hover {

    background: #1e90ff;

    color: #fff;

}

.autocomplete li.highlight {

background-color: #1e90ff;

color: #fff;

}


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