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效果圖： 調用頁處理：
AutoComplete文件的修改  AutoCompletejQuery.autocomplete = function(input, options) { // Create a link to self var me = this; // Create jQuery object for input element var $input = $(input).attr("autocomplete", "off"); // Apply inputClass if necessary if (options.inputClass) $input.addClass(options.inputClass); // Create results var results = document.createElement("div"); // Create jQuery object for results var $results = $(results); $results.hide().addClass(options.resultsClass).css("position", "absolute"); if( options.width > 0 ) $results.css("width", options.width); // Add to body element $("body").append(results); input.autocompleter = me; var timeout = null; var prev = ""; var active = -1; var cache = {}; var keyb = false; var hasFocus = false; var lastKeyPressCode = null; // flush cache function flushCache(){ cache = {}; cache.data = {}; cache.length = 0; }; // flush cache flushCache(); // if there is a data array supplied if( options.data != null ){ var sFirstChar = "", stMatchSets = {}, row = []; // no url was specified, we need to adjust the cache length to make sure it fits the local data store if( typeof options.url != "string" ) options.cacheLength = 1; // loop through the array and create a lookup structure for( var i=0; i < options.data.length; i++ ){ // if row is a string, make an array otherwise just reference the array row = ((typeof options.data[i] == "string") ? [options.data[i]] : options.data[i]); // if the length is zero, don't add to list if( row[0].length > 0 ){ // get the first character sFirstChar = row[0].substring(0, 1).toLowerCase(); // if no lookup array for this character exists, look it up now if( !stMatchSets[sFirstChar] ) stMatchSets[sFirstChar] = []; // if the match is a string stMatchSets[sFirstChar].push(row); } } // add the data items to the cache for( var k in stMatchSets ){ // increase the cache size options.cacheLength++; // add to the cache addToCache(k, stMatchSets[k]); } } $input .keydown(function(e) { // track last key pressed lastKeyPressCode = e.keyCode; switch(e.keyCode) { case 38: // up e.preventDefault(); moveSelect(-1); break; case 40: // down e.preventDefault(); moveSelect(1); break; case 9: // tab case 13: // return if( selectCurrent() ){ // make sure to blur off the current field $input.get(0).blur(); e.preventDefault(); } break; default: active = -1; if (timeout) clearTimeout(timeout); timeout = setTimeout(function(){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 = true; }) .blur(function() { // track whether the field has focus hasFocus = false; hideResults(); }); hideResultsNow(); function onChange() { // ignore if the following keys are pressed: [del] [shift] [capslock] if( lastKeyPressCode == 46 || (lastKeyPressCode > 8 && lastKeyPressCode < 32) ) return $results.hide(); var v = $input.val(); if (v == prev) return; prev = v; if (v.length >= options.minChars) { $input.addClass(options.loadingClass); requestData(v); } else { $input.removeClass(options.loadingClass); $results.hide(); } }; function moveSelect(step) { var lis = $("li", results); if (!lis) return; active += step; if (active < 0) { active = 0; } else if (active >= lis.size()) { active = lis.size() - 1; } lis.removeClass("ac_over"); $(lis[active]).addClass("ac_over"); // Weird behaviour in IE // if (lis[active] && lis[active].scrollIntoView) { // lis[active].scrollIntoView(false); // } }; function selectCurrent() { var li = $("li.ac_over", results)[0]; if (!li) { var $li = $("li", results); if (options.selectOnly) { if ($li.length == 1) li = $li[0]; } else if (options.selectFirst) { li = $li[0]; } } if (li) { selectItem(li); return true; } else { return false; } }; function selectItem(li) { if (!li) { li = document.createElement("li"); li.extra = []; li.selectValue = ""; } //sey 2009/08/04 change 為滿足需求 更改 var v =$.trim(li.extra[0]); //$.trim(li.selectValue ? li.selectValue : li.innerHTML); input.lastSelected = v; prev = v; $results.html(""); $input.val(v); hideResultsNow(); if (options.onItemSelect) setTimeout(function() { options.onItemSelect(li) }, 1); }; // selects a portion of the input string function createSelection(start, end){ // get a reference to the input element var field = $input.get(0); 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(); }; // fills in the input box w/the first match (assumed to be the best match) function autoFill(sValue){ // if the last user key pressed was backspace, don't autofill if( lastKeyPressCode != 8 ){ // fill in the value (keep the case the user has typed) $input.val($input.val() + sValue.substring(prev.length)); // select the portion of the value not typed by the user (so the next character will erase) createSelection(prev.length, sValue.length); } }; function showResults() { // get the position of the input field right now (in case the DOM is shifted) var pos = findPos(input); // either use the specified width, or autocalculate based on form element var iWidth = (options.width > 0) ? options.width : $input.width(); // reposition $results.css({ width: parseInt(iWidth) + "px", top: (pos.y + input.offsetHeight) + "px", left: pos.x + "px" }).show(); }; function hideResults() { if (timeout) clearTimeout(timeout); timeout = setTimeout(hideResultsNow, 200); }; function hideResultsNow() { if (timeout) clearTimeout(timeout); $input.removeClass(options.loadingClass); if ($results.is(":visible")) { $results.hide(); } if (options.mustMatch) { var v = $input.val(); if (v != input.lastSelected) { selectItem(null); } } }; function receiveData(q, data) { if (data) { $input.removeClass(options.loadingClass); results.innerHTML = ""; // if the field no longer has focus or if there are no matches, do not display the drop down if( !hasFocus || data.length == 0 ) return hideResultsNow(); if ($.browser.msie) { // we put a styled iframe behind the calendar so HTML SELECT elements don't show through $results.append(document.createElement('iframe')); } results.appendChild(dataToDom(data)); // autofill in the complete box w/the first match as long as the user hasn't entered in more data if( options.autoFill && ($input.val().toLowerCase() == q.toLowerCase()) ) autoFill(data[0][0]); showResults(); } else { hideResultsNow(); } }; function parseData(data) { if (!data) return null; var parsed = []; var rows = data.split(options.lineSeparator); for (var i=0; i < rows.length; i++) { var row = $.trim(rows[i]); if (row) { parsed[parsed.length] = row.split(options.cellSeparator); } } return parsed; }; function dataToDom(data) { var ul = document.createElement("ul"); var num = data.length; // limited results to a max number if( (options.maxItemsToShow > 0) && (options.maxItemsToShow < num) ) num = options.maxItemsToShow; for (var i=0; i < num; i++) { var row = data[i]; if (!row) continue; var li = document.createElement("li"); if (options.formatItem) { li.innerHTML = options.formatItem(row, i, num); li.selectValue = row[0]; } else { li.innerHTML = row[0]; li.selectValue = row[0]; } var extra = null; if (row.length > 1) { extra = []; for (var j=1; j < row.length; j++) { extra[extra.length] = row[j]; } } li.extra = extra; ul.appendChild(li); $(li).hover( function() { $("li", ul).removeClass("ac_over"); $(this).addClass("ac_over"); active = $("li", ul).indexOf($(this).get(0)); }, function() { $(this).removeClass("ac_over"); } ).click(function(e) { e.preventDefault(); e.stopPropagation(); selectItem(this) }); } return ul; }; function requestData(q) { if (!options.matchCase) q = q.toLowerCase(); var data = options.cacheLength ? loadFromCache(q) : null; // recieve the cached data if (data) { receiveData(q, data); // if an AJAX url has been supplied, try loading the data now } else if( (typeof options.url == "string") && (options.url.length > 0) ){ $.get(makeUrl(q), function(data) { data = parseData(data); addToCache(q, data); receiveData(q, data); }); // if there's been no data found, remove the loading class } else { $input.removeClass(options.loadingClass); } }; function makeUrl(q) { //將encodeURL更改為 escape的編碼格式 就可以支持中文 var url = options.url + "?q=" + escape(q); for (var i in options.extraParams) { url += "&" + i + "=" + escape(options.extraParams[i]); } return url; }; function loadFromCache(q) { if (!q) return null; if (cache.data[q]) return cache.data[q]; if (options.matchSubset) { for (var i = q.length - 1; i >= options.minChars; i--) { var qs = q.substr(0, i); var c = cache.data[qs]; if (c) { var csub = []; for (var j = 0; j < c.length; j++) { var x = c[j]; var x0 = x[0]; if (matchSubset(x0, q)) { csub[csub.length] = x; } } return csub; } } } return null; }; 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; }; this.flushCache = function() { flushCache(); }; this.setExtraParams = function(p) { options.extraParams = p; }; this.findValue = function(){ var q = $input.val(); if (!options.matchCase) q = q.toLowerCase(); var data = options.cacheLength ? loadFromCache(q) : null; if (data) { findValueCallback(q, data); } else if( (typeof options.url == "string") && (options.url.length > 0) ){ $.get(makeUrl(q), function(data) { data = parseData(data) addToCache(q, data); findValueCallback(q, data); }); } else { // no matches findValueCallback(q, null); } } function findValueCallback(q, data){ if (data) $input.removeClass(options.loadingClass); var num = (data) ? data.length : 0; var li = null; for (var i=0; i < num; i++) { var row = data[i]; if( row[0].toLowerCase() == q.toLowerCase() ){ li = document.createElement("li"); if (options.formatItem) { li.innerHTML = options.formatItem(row, i, num); li.selectValue = row[0]; } else { li.innerHTML = row[0]; li.selectValue = row[0]; } var extra = null; if( row.length > 1 ){ extra = []; for (var j=1; j < row.length; j++) { extra[extra.length] = row[j]; } } li.extra = extra; } } if( options.onFindValue ) setTimeout(function() { options.onFindValue(li) }, 1); } function addToCache(q, data) { if (!data || !q || !options.cacheLength) return; if (!cache.length || cache.length > options.cacheLength) { flushCache(); cache.length++; } else if (!cache[q]) { cache.length++; } cache.data[q] = data; }; function findPos(obj) { var curleft = obj.offsetLeft || 0; var curtop = obj.offsetTop || 0; while (obj = obj.offsetParent) { curleft += obj.offsetLeft curtop += obj.offsetTop } return {x:curleft,y:curtop}; } } jQuery.fn.autocomplete = function(url, options, data) { // Make sure options exists options = options || {}; // Set url as option options.url = url; // set some bulk local data options.data = ((typeof data == "object") && (data.constructor == Array)) ? data : null; // Set default values for required options options.inputClass = options.inputClass || "ac_input"; options.resultsClass = options.resultsClass || "ac_results"; options.lineSeparator = options.lineSeparator || "\n"; options.cellSeparator = options.cellSeparator || "|"; options.minChars = options.minChars || 1; options.delay = options.delay || 400; options.matchCase = options.matchCase || 0; options.matchSubset = options.matchSubset || 1; options.matchContains = options.matchContains || 0; options.cacheLength = options.cacheLength || 1; options.mustMatch = options.mustMatch || 0; options.extraParams = options.extraParams || {}; options.loadingClass = options.loadingClass || "ac_loading"; options.selectFirst = options.selectFirst || false; options.selectOnly = options.selectOnly || false; options.maxItemsToShow = options.maxItemsToShow || -1; options.autoFill = options.autoFill || false; options.width = parseInt(options.width, 10) || 0; this.each(function() { var input = this; new jQuery.autocomplete(input, options); }); // Don't break the chain return this; } jQuery.fn.autocompleteArray = function(data, options) { return this.autocomplete(null, options, data); } jQuery.fn.indexOf = function(e){ for( var i=0; i<this.length; i++ ){ if( this[i] == e ) return i; } return -1; };
請求的ajax頁的寫法：
Codeprotected void Page_Load(object sender, EventArgs e) { if (!Page.IsPostBack) { if (pTxtValue != "") { Response.Write(GetCity(pTxtValue)); } } } protected string pTxtValue { get { if (!string.IsNullOrEmpty(Request.QueryString["q"])) { return Request.QueryString["q"].Trim(); } else { return ""; } } } protected string GetCity(string cityName) { List<City> lst = CityObject.GetCacheCityList(); FindCity fc = new FindCity(cityName); System.Predicate<City> CityPredicate = new System.Predicate<City>(fc.CityPredicate); List<City> clst = lst.FindAll(CityPredicate); City tmp = null; StringBuilder Builder = new StringBuilder(); for (int i = 0; i < clst.Count; i++) { tmp = (City)clst[i]; Builder.AppendLine(""+tmp.Ename+"|" + tmp.Cname + "|" + tmp.Code + ""); } return Builder.ToString(); } public class FindCity { private string strcity; public FindCity(string city) { this.strcity = city; } public bool CityPredicate(City city) { bool rtn; if (city.Ename.ToLower().StartsWith(strcity.ToLower().Trim()) || city.Cname.StartsWith(strcity.Trim())) { rtn = true; } else { rtn = false; } return rtn; } } |
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