jquery autocomplete ajax获取动态数据,兼容各浏览器,支持中文

比眉伴天荒 2022-08-13 01:59 229阅读 0赞

## jquery.autocomplete.js经过修改，支持各种浏览器、支持中文输入！ ##

## 1、效果图如下 ##

![SouthEast][]

## 2、HTML和ajax代码 ##

<!DOCTYPE html>
    
    <html xmlns="http://www.w3.org/1999/xhtml">
    <head runat="server">
        <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
        <title></title>
        <link href="Scripts/jquery.autocomplete/jquery.autocomplete.css" rel="stylesheet" />
        <script src="Scripts/jquery.autocomplete/jquery.js"></script>
        <script src="Scripts/jquery.autocomplete/jquery.autocomplete.js"></script>
        <script>
    	$(function () {
    		
    	 //① 固定数据
                var websites = [{ "User_LastName": "安春", "user_employeeNo": "0041", "User_UserId": 50233 }, { "User_LastName": "安国兵", "user_employeeNo": "1404", "User_UserId": 51278 }, { "User_LastName": "包小文", "user_employeeNo": "0685", "User_UserId": 50521 }];
                //$("#MainContent_salesperson").autocomplete(websites, {
                     minChars: 1,					//最少输入字条
                    max: 12,
                    autoFill: false,				//是否选多个,用","分开
                    mustMatch: false,				//是否全匹配, 如数据中没有此数据,将无法输入
                    matchContains: true,			//是否全文搜索,否则只是前面作为标准
                    scrollHeight: 220,
                    width: 500,
                    multiple: false,
                    formatItem: function (row, i, max) {					//显示格式
                        return "<span style='width:140px'>" + row.User_LastName + "</span><span style='width:120px'>" + row.User_LastName + "</span><span style='width:120px'>" + row.User_LastName + "</span><span>" + row.User_LastName + "</span>";
                    },
                    formatMatch: function (row, i, max) {				//以什么数据作为搜索关键词,可包括中文,
                        return row.User_LastName;
                    },
                    formatResult: function (row) {						//返回结果
                        return row.User_LastName;
                    }
                });
    			
     //② ajax获取后台数据
        $.ajax({
            contentType: "application/json",
            url: "../AjaxPage/GetAjax.aspx?z=GetAutoCompleteUserId_LastName",
            dataType: "json",
            success: function (msg) {
                if (msg == null) {
                }
                else if (msg != null && msg.msg != 'login_timeout') {
                    $("#MainContent_salesperson").autocomplete(msg, {
                        minChars: 1,					//最少输入字条
                        max: 12,
                        autoFill: false,				//是否选多个,用","分开
                        mustMatch: false,				//是否全匹配, 如数据中没有此数据,将无法输入
                        matchContains: true,			//是否全文搜索,否则只是前面作为标准
                        scrollHeight: 220,
                        width: 147,
                        multiple: false,
                        formatItem: function (row, i, max) {					//显示格式
                            return "<span style='width:72px;'>" + row.user_employeeNo + "</span><span style='width:72px;float:right;font-style: normal;font-weight:normal;' >" + row.User_LastName + "</span>";
                        },
                        formatMatch: function (row, i, max) {				//以什么数据作为搜索关键词,可包括中文,
                            return row.user_employeeNo + row.User_LastName;
                        },
                        formatResult: function (row) {						//返回结果
                            return row.user_employeeNo + " " + row.User_LastName;
                        }
                    }).result(function (event, data, formatted) {
                        alert(data.User_UserId);
                        //根据最终返回的数据做处理
                    });
                }
                else if (msg != null && msg.msg == 'login_timeout') {
                    alert('登入超时！');
                    window.location.href = '../Logout.aspx';
                }
            }
        });
    
    
    
    
    });
     </script>
     </head>
    <body>
        <input id="MainContent_salesperson" type="text" />
    </body>
    </html>

## 3、autocomplete.css 代码 ##

.ac_results {
        padding: 0px;
        /*border: 1px solid black;*/
        border: 1px solid #C0CADD;
        background-color: white;
        overflow: hidden;
        z-index: 99999;
    }
    
        .ac_results ul {
            width: 100%;
            list-style-position: outside;
            list-style: none;
            padding: 0;
            margin: 0;
        }
    
        .ac_results li {
            /*加*/
            clear: both;
            margin: 0px;
            padding: 2px 5px;
            cursor: default;
            display: block;
            overflow: hidden;
            position: relative;
            /* 
    	if width will be 100% horizontal scrollbar will apear 
    	when scroll mode will be used
    	*/
            /*width: 100%;*/
            font: menu;
            font-size: 12px;
            /* 
    	it is very important, if line-height not setted or setted 
    	in relative units scroll will be broken in firefox
    	*/
            line-height: 23px;
            overflow: hidden;
        }
            /*减*/
            /*.ac_results li span {
                font-size: 12px;
                display: block;
                float: left;
                width: 80px;
            }*/
    
            /*加*/
            .ac_results li span {
                margin: 0;
                padding: 0;
                font-size: 12px;
                
            }
    
            .ac_results li b {
                font-size: 12px;
                display: block;
                float: left;
            }
    
    .ac_loading {
        background: white url('indicator.gif') right center no-repeat;
    }
    
    /*.ac_odd {
    	background-color: #eee;
    }
    
    .ac_over {
    	background-color: #0A246A;
    	color: white;
    }*/
    
    .ac_odd {
        background-color: #F5F7FA;
    }
    
    .ac_over {
        background-color: #E1E6EF;
        color: #374767;
    }

## 4、jquery.autocomplete.js  ##

(1)、这个js是经过修改的，支持各种浏览器、支持中文输入

/*
     * Autocomplete - jQuery plugin 1.0.2
     *
     * Copyright (c) 2007 Dylan Verheul, Dan G. Switzer, Anjesh Tuladhar, Jörn Zaefferer
     *
     * Dual licensed under the MIT and GPL licenses:
     *   http://www.opensource.org/licenses/mit-license.php
     *   http://www.gnu.org/licenses/gpl.html
     *
     * Revision: $Id: jquery.autocomplete.js 5747 2008-06-25 18:30:55Z joern.zaefferer $
     *
     */
    
    ; (function ($) {
    
        $.fn.extend({
            autocomplete: function (urlOrData, options) {
                var isUrl = typeof urlOrData == "string";
                options = $.extend({}, $.Autocompleter.defaults, {
                    url: isUrl ? urlOrData : null,
                    data: isUrl ? null : urlOrData,
                    delay: isUrl ? $.Autocompleter.defaults.delay : 10,
                    max: options && !options.scroll ? 10 : 150
                }, options);
    
                // if highlight is set to false, replace it with a do-nothing function
                options.highlight = options.highlight || function (value) { return value; };
    
                // if the formatMatch option is not specified, then use formatItem for backwards compatibility
                options.formatMatch = options.formatMatch || options.formatItem;
    
                return this.each(function () {
                    new $.Autocompleter(this, options);
                });
            },
            result: function (handler) {
                return this.bind("result", handler);
            },
            search: function (handler) {
                return this.trigger("search", [handler]);
            },
            flushCache: function () {
                return this.trigger("flushCache");
            },
            setOptions: function (options) {
                return this.trigger("setOptions", [options]);
            },
            unautocomplete: function () {
                return this.trigger("unautocomplete");
            }
        });
    
        $.Autocompleter = function (input, options) {
    
            var KEY = {
                UP: 38,
                DOWN: 40,
                DEL: 46,
                TAB: 9,
                RETURN: 13,
                ESC: 27,
                COMMA: 188,
                PAGEUP: 33,
                PAGEDOWN: 34,
                BACKSPACE: 8
            };
    
            // Create $ object for input element
            var $input = $(input).attr("autocomplete", "off").addClass(options.inputClass);
    
            var timeout;
            var previousValue = "";
            var cache = $.Autocompleter.Cache(options);
            var hasFocus = 0;
            var lastKeyPressCode;
            var config = {
                mouseDownOnSelect: false
            };
            var select = $.Autocompleter.Select(options, input, selectCurrent, config);
    
            var blockSubmit;
    
            // prevent form submit in opera when selecting with return key
            $.browser.opera && $(input.form).bind("submit.autocomplete", function () {
                if (blockSubmit) {
                    blockSubmit = false;
                    return false;
                }
            });
    
            // only opera doesn't trigger keydown multiple times while pressed, others don't work with keypress at all
            $input.bind(($.browser.opera ? "keypress" : "keydown") + ".autocomplete", function (event) {
                // track last key pressed
                lastKeyPressCode = event.keyCode;
                switch (event.keyCode) {
    
                    case KEY.UP:
                        event.preventDefault();
                        if (select.visible()) {
                            select.prev();
                        } else {
                            onChange(0, true);
                        }
                        break;
    
                    case KEY.DOWN:
                        event.preventDefault();
                        if (select.visible()) {
                            select.next();
                        } else {
                            onChange(0, true);
                        }
                        break;
    
                    case KEY.PAGEUP:
                        event.preventDefault();
                        if (select.visible()) {
                            select.pageUp();
                        } else {
                            onChange(0, true);
                        }
                        break;
    
                    case KEY.PAGEDOWN:
                        event.preventDefault();
                        if (select.visible()) {
                            select.pageDown();
                        } else {
                            onChange(0, true);
                        }
                        break;
    
                        // matches also semicolon
                    case options.multiple && $.trim(options.multipleSeparator) == "," && KEY.COMMA:
                    case KEY.TAB:
                    case KEY.RETURN:
                        if (selectCurrent()) {
                            // stop default to prevent a form submit, Opera needs special handling
                            event.preventDefault();
                            blockSubmit = true;
                            return false;
                        }
                        break;
    
                    case KEY.ESC:
                        select.hide();
                        break;
    
                    default:
                        clearTimeout(timeout);
                        timeout = setTimeout(onChange, options.delay);
                        break;
                }
            }).focus(function () {
                // track whether the field has focus, we shouldn't process any
                // results if the field no longer has focus
                hasFocus++;
            }).blur(function () {
                hasFocus = 0;
                if (!config.mouseDownOnSelect) {
                    hideResults();
                }
            }).click(function () {
                // show select when clicking in a focused field
                if (hasFocus++ > 1 && !select.visible()) {
                    onChange(0, true);
                }
            }).bind("search", function () {
                // TODO why not just specifying both arguments?
                var fn = (arguments.length > 1) ? arguments[1] : null;
                function findValueCallback(q, data) {
                    var result;
                    if (data && data.length) {
                        for (var i = 0; i < data.length; i++) {
                            if (data[i].result.toLowerCase() == q.toLowerCase()) {
                                result = data[i];
                                break;
                            }
                        }
                    }
                    if (typeof fn == "function") fn(result);
                    else $input.trigger("result", result && [result.data, result.value]);
                }
                $.each(trimWords($input.val()), function (i, value) {
                    request(value, findValueCallback, findValueCallback);
                });
            }).bind("flushCache", function () {
                cache.flush();
            }).bind("setOptions", function () {
                $.extend(options, arguments[1]);
                // if we've updated the data, repopulate
                if ("data" in arguments[1])
                    cache.populate();
            }).bind("unautocomplete", function () {
                select.unbind();
                $input.unbind();
                $(input.form).unbind(".autocomplete");
            }).bind("input", function () {
                // @hack:support for inputing chinese characters in firefox
                onChange(0, true);
            });;
    
    
            function selectCurrent() {
                var selected = select.selected();
                if (!selected)
                    return false;
    
                var v = selected.result;
                previousValue = v;
    
                if (options.multiple) {
                    var words = trimWords($input.val());
                    if (words.length > 1) {
                        v = words.slice(0, words.length - 1).join(options.multipleSeparator) + options.multipleSeparator + v;
                    }
                    v += options.multipleSeparator;
                }
    
                $input.val(v);
                hideResultsNow();
                $input.trigger("result", [selected.data, selected.value]);
                return true;
            }
    
            function onChange(crap, skipPrevCheck) {
                if (lastKeyPressCode == KEY.DEL) {
                    select.hide();
                    return;
                }
    
                var currentValue = $input.val();
    
                if (!skipPrevCheck && currentValue == previousValue)
                    return;
    
                previousValue = currentValue;
    
                currentValue = lastWord(currentValue);
                if (currentValue.length >= options.minChars) {
                    $input.addClass(options.loadingClass);
                    if (!options.matchCase)
                        currentValue = currentValue.toLowerCase();
                    request(currentValue, receiveData, hideResultsNow);
                } else {
                    stopLoading();
                    select.hide();
                }
            };
    
            function trimWords(value) {
                if (!value) {
                    return [""];
                }
                var words = value.split(options.multipleSeparator);
                var result = [];
                $.each(words, function (i, value) {
                    if ($.trim(value))
                        result[i] = $.trim(value);
                });
                return result;
            }
    
            function lastWord(value) {
                if (!options.multiple)
                    return value;
                var words = trimWords(value);
                return words[words.length - 1];
            }
    
            // fills in the input box w/the first match (assumed to be the best match)
            // q: the term entered
            // sValue: the first matching result
            function autoFill(q, sValue) {
                // autofill in the complete box w/the first match as long as the user hasn't entered in more data
                // if the last user key pressed was backspace, don't autofill
                if (options.autoFill && (lastWord($input.val()).toLowerCase() == q.toLowerCase()) && lastKeyPressCode != KEY.BACKSPACE) {
                    // fill in the value (keep the case the user has typed)
                    $input.val($input.val() + sValue.substring(lastWord(previousValue).length));
                    // select the portion of the value not typed by the user (so the next character will erase)
                    $.Autocompleter.Selection(input, previousValue.length, previousValue.length + sValue.length);
                }
            };
    
            function hideResults() {
                clearTimeout(timeout);
                timeout = setTimeout(hideResultsNow, 200);
            };
    
            function hideResultsNow() {
                var wasVisible = select.visible();
                select.hide();
                clearTimeout(timeout);
                stopLoading();
                if (options.mustMatch) {
                    // call search and run callback
                    $input.search(
                        function (result) {
                            // if no value found, clear the input box
                            if (!result) {
                                if (options.multiple) {
                                    var words = trimWords($input.val()).slice(0, -1);
                                    $input.val(words.join(options.multipleSeparator) + (words.length ? options.multipleSeparator : ""));
                                }
                                else
                                    $input.val("");
                            }
                        }
                    );
                }
                if (wasVisible)
                    // position cursor at end of input field
                    $.Autocompleter.Selection(input, input.value.length, input.value.length);
            };
    
            function receiveData(q, data) {
                if (data && data.length && hasFocus) {
                    stopLoading();
                    select.display(data, q);
                    autoFill(q, data[0].value);
                    select.show();
                } else {
                    hideResultsNow();
                }
            };
    
            function request(term, success, failure) {
                if (!options.matchCase)
                    term = term.toLowerCase();
                var data = cache.load(term);
                // recieve the cached data
                if (data && data.length) {
                    success(term, data);
                    // if an AJAX url has been supplied, try loading the data now
                } else if ((typeof options.url == "string") && (options.url.length > 0)) {
    
                    var extraParams = {
                        timestamp: +new Date()
                    };
                    $.each(options.extraParams, function (key, param) {
                        extraParams[key] = typeof param == "function" ? param() : param;
                    });
    
                    $.ajax({
                        // try to leverage ajaxQueue plugin to abort previous requests
                        mode: "abort",
                        // limit abortion to this input
                        port: "autocomplete" + input.name,
                        dataType: options.dataType,
                        url: options.url,
                        data: $.extend({
                            q: lastWord(escape(term)),//q: lastWord(term),  //在这里修改识别中文
                            limit: options.max
                        }, extraParams),
                        success: function (data) {
                            var parsed = options.parse && options.parse(data) || parse(data);
                            cache.add(term, parsed);
                            success(term, parsed);
                        }
                    });
                } else {
                    // if we have a failure, we need to empty the list -- this prevents the the [TAB] key from selecting the last successful match
                    select.emptyList();
                    failure(term);
                }
            };
    
            function parse(data) {
                var parsed = [];
                var rows = data.split("\n");
                for (var i = 0; i < rows.length; i++) {
                    var row = $.trim(rows[i]);
                    if (row) {
                        row = row.split("|");
                        parsed[parsed.length] = {
                            data: row,
                            value: row[0],
                            result: options.formatResult && options.formatResult(row, row[0]) || row[0]
                        };
                    }
                }
                return parsed;
            };
    
            function stopLoading() {
                $input.removeClass(options.loadingClass);
            };
    
        };
    
        $.Autocompleter.defaults = {
            inputClass: "ac_input",
            resultsClass: "ac_results",
            loadingClass: "ac_loading",
            minChars: 1,
            delay: 400,
            matchCase: false,
            matchSubset: true,
            matchContains: false,
            cacheLength: 10,
            max: 100,
            mustMatch: false,
            extraParams: {},
            selectFirst: true,
            formatItem: function (row) { return row[0]; },
            formatMatch: null,
            autoFill: false,
            width: 0,
            multiple: false,
            multipleSeparator: ",",
            highlight: function (value, term) {
                //<strong>$1</strong> 这段代码 导致第二个参数第一个字变粗
                //return value.replace(new RegExp("(?![^&;]+;)(?!<[^<>]*)(" + term.replace(/([\^\$\[\]\{\}\*\.\+\?\|\\])/gi, "\\$1") + ")(?![^<>]*>)(?![^&;]+;)", "gi"), "<strong>$1</strong>");
                return value.replace(new RegExp("(?![^&;]+;)(?!<[^<>]*)(" + term.replace(/([\^\$\[\]\{\}\*\.\+\?\|\\])/gi, "\\$1") + ")(?![^<>]*>)(?![^&;]+;)", "gi"), "$1");
            },
            scroll: true,
            scrollHeight: 180
        };
    
        $.Autocompleter.Cache = function (options) {
    
            var data = {};
            var length = 0;
    
            function matchSubset(s, sub) {
                if (!options.matchCase)
                    s = s.toLowerCase();
                var i = s.indexOf(sub);
                if (i == -1) return false;
                return i == 0 || options.matchContains;
            };
    
            function add(q, value) {
                if (length > options.cacheLength) {
                    flush();
                }
                if (!data[q]) {
                    length++;
                }
                data[q] = value;
            }
    
            function populate() {
                if (!options.data) return false;
                // track the matches
                var stMatchSets = {},
                    nullData = 0;
    
                // no url was specified, we need to adjust the cache length to make sure it fits the local data store
                if (!options.url) options.cacheLength = 1;
    
                // track all options for minChars = 0
                stMatchSets[""] = [];
    
                // loop through the array and create a lookup structure
                for (var i = 0, ol = options.data.length; i < ol; i++) {
                    var rawValue = options.data[i];
                    // if rawValue is a string, make an array otherwise just reference the array
                    rawValue = (typeof rawValue == "string") ? [rawValue] : rawValue;
    
                    var value = options.formatMatch(rawValue, i + 1, options.data.length);
                    if (value === false)
                        continue;
    
                    var firstChar = value.charAt(0).toLowerCase();
                    // if no lookup array for this character exists, look it up now
                    if (!stMatchSets[firstChar])
                        stMatchSets[firstChar] = [];
    
                    // if the match is a string
                    var row = {
                        value: value,
                        data: rawValue,
                        result: options.formatResult && options.formatResult(rawValue) || value
                    };
    
                    // push the current match into the set list
                    stMatchSets[firstChar].push(row);
    
                    // keep track of minChars zero items
                    if (nullData++ < options.max) {
                        stMatchSets[""].push(row);
                    }
                };
    
                // add the data items to the cache
                $.each(stMatchSets, function (i, value) {
                    // increase the cache size
                    options.cacheLength++;
                    // add to the cache
                    add(i, value);
                });
            }
    
            // populate any existing data
            setTimeout(populate, 25);
    
            function flush() {
                data = {};
                length = 0;
            }
    
            return {
                flush: flush,
                add: add,
                populate: populate,
                load: function (q) {
                    if (!options.cacheLength || !length)
                        return null;
                    /* 
                     * if dealing w/local data and matchContains than we must make sure
                     * to loop through all the data collections looking for matches
                     */
                    if (!options.url && options.matchContains) {
                        // track all matches
                        var csub = [];
                        // loop through all the data grids for matches
                        for (var k in data) {
                            // don't search through the stMatchSets[""] (minChars: 0) cache
                            // this prevents duplicates
                            if (k.length > 0) {
                                var c = data[k];
                                $.each(c, function (i, x) {
                                    // if we've got a match, add it to the array
                                    if (matchSubset(x.value, q)) {
                                        csub.push(x);
                                    }
                                });
                            }
                        }
                        return csub;
                    } else
                        // if the exact item exists, use it
                        if (data[q]) {
                            return data[q];
                        } else
                            if (options.matchSubset) {
                                for (var i = q.length - 1; i >= options.minChars; i--) {
                                    var c = data[q.substr(0, i)];
                                    if (c) {
                                        var csub = [];
                                        $.each(c, function (i, x) {
                                            if (matchSubset(x.value, q)) {
                                                csub[csub.length] = x;
                                            }
                                        });
                                        return csub;
                                    }
                                }
                            }
                    return null;
                }
            };
        };
    
        $.Autocompleter.Select = function (options, input, select, config) {
            var CLASSES = {
                ACTIVE: "ac_over"
            };
    
            var listItems,
                active = -1,
                data,
                term = "",
                needsInit = true,
                element,
                list;
    
            // Create results
            function init() {
                if (!needsInit)
                    return;
                element = $("<div/>")
                .hide()
                .addClass(options.resultsClass)
                .css("position", "absolute")
                .appendTo(document.body);
    
                list = $("<ul/>").appendTo(element).mouseover(function (event) {
                    if (target(event).nodeName && target(event).nodeName.toUpperCase() == 'LI') {
                        active = $("li", list).removeClass(CLASSES.ACTIVE).index(target(event));
                        $(target(event)).addClass(CLASSES.ACTIVE);
                    }
                }).click(function (event) {
                    $(target(event)).addClass(CLASSES.ACTIVE);
                    select();
                    // TODO provide option to avoid setting focus again after selection? useful for cleanup-on-focus
                    input.focus();
                    return false;
                }).mousedown(function () {
                    config.mouseDownOnSelect = true;
                }).mouseup(function () {
                    config.mouseDownOnSelect = false;
                });
    
                if (options.width > 0)
                    element.css("width", options.width);
    
                needsInit = false;
            }
    
            function target(event) {
                var element = event.target;
                while (element && element.tagName != "LI")
                    element = element.parentNode;
                // more fun with IE, sometimes event.target is empty, just ignore it then
                if (!element)
                    return [];
                return element;
            }
    
            function moveSelect(step) {
                listItems.slice(active, active + 1).removeClass(CLASSES.ACTIVE);
                movePosition(step);
                var activeItem = listItems.slice(active, active + 1).addClass(CLASSES.ACTIVE);
                if (options.scroll) {
                    var offset = 0;
                    listItems.slice(0, active).each(function () {
                        offset += this.offsetHeight;
                    });
                    if ((offset + activeItem[0].offsetHeight - list.scrollTop()) > list[0].clientHeight) {
                        list.scrollTop(offset + activeItem[0].offsetHeight - list.innerHeight());
                    } else if (offset < list.scrollTop()) {
                        list.scrollTop(offset);
                    }
                }
            };
    
            function movePosition(step) {
                active += step;
                if (active < 0) {
                    active = listItems.size() - 1;
                } else if (active >= listItems.size()) {
                    active = 0;
                }
            }
    
            function limitNumberOfItems(available) {
                return options.max && options.max < available
                    ? options.max
                    : available;
            }
    
            function fillList() {
                list.empty();
                var max = limitNumberOfItems(data.length);
                for (var i = 0; i < max; i++) {
                    if (!data[i])
                        continue;
                    var formatted = options.formatItem(data[i].data, i + 1, max, data[i].value, term);
                    if (formatted === false)
                        continue;
                    var li = $("<li/>").html(options.highlight(formatted, term)).addClass(i % 2 == 0 ? "ac_even" : "ac_odd").appendTo(list)[0];
                    $.data(li, "ac_data", data[i]);
                }
                listItems = list.find("li");
                if (options.selectFirst) {
                    listItems.slice(0, 1).addClass(CLASSES.ACTIVE);
                    active = 0;
                }
                // apply bgiframe if available
                if ($.fn.bgiframe)
                    list.bgiframe();
            }
    
            return {
                display: function (d, q) {
                    init();
                    data = d;
                    term = q;
                    fillList();
                },
                next: function () {
                    moveSelect(1);
                },
                prev: function () {
                    moveSelect(-1);
                },
                pageUp: function () {
                    if (active != 0 && active - 8 < 0) {
                        moveSelect(-active);
                    } else {
                        moveSelect(-8);
                    }
                },
                pageDown: function () {
                    if (active != listItems.size() - 1 && active + 8 > listItems.size()) {
                        moveSelect(listItems.size() - 1 - active);
                    } else {
                        moveSelect(8);
                    }
                },
                hide: function () {
                    element && element.hide();
                    listItems && listItems.removeClass(CLASSES.ACTIVE);
                    active = -1;
                },
                visible: function () {
                    return element && element.is(":visible");
                },
                current: function () {
                    return this.visible() && (listItems.filter("." + CLASSES.ACTIVE)[0] || options.selectFirst && listItems[0]);
                },
                show: function () {
                    var offset = $(input).offset();
                    element.css({
                        width: typeof options.width == "string" || options.width > 0 ? options.width : $(input).width(),
                        top: offset.top + input.offsetHeight,
                        left: offset.left
                    }).show();
                    if (options.scroll) {
                        list.scrollTop(0);
                        list.css({
                            maxHeight: options.scrollHeight,
                            overflow: 'hidden'
                        });
    
                        if ($.browser.msie && typeof document.body.style.maxHeight === "undefined") {
                            var listHeight = 0;
                            listItems.each(function () {
                                listHeight += this.offsetHeight;
                            });
                            var scrollbarsVisible = listHeight > options.scrollHeight;
                            list.css('height', scrollbarsVisible ? options.scrollHeight : listHeight);
                            if (!scrollbarsVisible) {
                                // IE doesn't recalculate width when scrollbar disappears
                                listItems.width(list.width() - parseInt(listItems.css("padding-left")) - parseInt(listItems.css("padding-right")));
                            }
                        }
    
                    }
                },
                selected: function () {
                    var selected = listItems && listItems.filter("." + CLASSES.ACTIVE).removeClass(CLASSES.ACTIVE);
                    return selected && selected.length && $.data(selected[0], "ac_data");
                },
                emptyList: function () {
                    list && list.empty();
                },
                unbind: function () {
                    element && element.remove();
                }
            };
        };
    
        $.Autocompleter.Selection = function (field, start, end) {
            if (field.createTextRange) {
                var selRange = field.createTextRange();
                selRange.collapse(true);
                selRange.moveStart("character", start);
                selRange.moveEnd("character", end);
                selRange.select();
            } else if (field.setSelectionRange) {
                field.setSelectionRange(start, end);
            } else {
                if (field.selectionStart) {
                    field.selectionStart = start;
                    field.selectionEnd = end;
                }
            }
            field.focus();
        };
    
    })(jQuery);

本文参考这哥们改变过来的，多亏这哥们了！

[http://download.csdn.net/download/smallipis/4291438][http_download.csdn.net_download_smallipis_4291438]

这种方式也可以试试~

![SouthEast 1][]

[SouthEast]: /images/20220810/0084f1aca9aa4e5aa70ba7700c862808.png
[http_download.csdn.net_download_smallipis_4291438]: http://download.csdn.net/download/smallipis/4291438
[SouthEast 1]: /images/20220810/0bca69d56236416281955b6782b09b46.png