autocomplete ajax 使用

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$('#client').autocomplete("${path}",{
        matchSubset:1,matchContains:1,cacheLength:100,dataType:'json',matchContains: true,max: 12,//列表里的条目数
		minChars: 2,//自动完成激活之前填入的最小字符
		scrollHeight: 300,//提示的高度,溢出显示滚动条
		matchContains: true,//包含匹配,就是data参数里的数据,是否只要包含文本框里的数据就显示
		autoFill: false,//自动填充
		parse:function(data) {//解释返回的数据,把其存在数组里
          	var parsed = [];
	        for (var i = 0; i < data.length; i++) {
	            parsed[parsed.length] = {
	               data: data[i],value: data[i].label,result: data[i].label //返回的结果显示内容
	        	};
	        }
	        return parsed;
		},formatItem: function(row,i,max) {
			var result = "";
			if(row.name){
				result = row.name + '[' + row.label + ']';
			}else{
				result = row.label;
			}
			return result?result:false;
		},formatMatch: function(row,max) {
			 return row.label;
		},formatResult: function(row) {
			return row.label;
		}
	}).result(function(event,row,formatted) {
		$("#muId").val(row.value);
	});

/*
 * jQuery Autocomplete plugin 1.2.2
 *
 * Copyright (c) 2009 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
 *
 * With small modifications by Alfonso Gómez-Arzola.
 * See changelog for details.
 *
 */
;
(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,noRecord : "No Records."
			},options);
			options.highlight = options.highlight || function(value) {
				return value
			};
			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
		};
		var globalFailure = null;
		if (options.failure != null && typeof options.failure == "function") {
			globalFailure = options.failure
		}
		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;
		navigator.userAgent.indexOf("Opera") != -1
				&& $(input.form).bind("submit.autocomplete",function() {
					if (blockSubmit) {
						blockSubmit = false;
						return false
					}
				});
		$input.bind(
				(navigator.userAgent.indexOf("Opera") != -1
						&& !'KeyboardEvent' in window ? "keypress" : "keydown")
						+ ".autocomplete",function(event) {
					hasFocus = 1;
					lastKeyPressCode = event.keyCode;
					switch (event.keyCode) {
					case KEY.UP:
						if (select.visible()) {
							event.preventDefault();
							select.prev()
						} else {
							onChange(0,true)
						}
						break;
					case KEY.DOWN:
						if (select.visible()) {
							event.preventDefault();
							select.next()
						} else {
							onChange(0,true)
						}
						break;
					case KEY.PAGEUP:
						if (select.visible()) {
							event.preventDefault();
							select.pageUp()
						} else {
							onChange(0,true)
						}
						break;
					case KEY.PAGEDOWN:
						if (select.visible()) {
							event.preventDefault();
							select.pageDown()
						} else {
							onChange(0,true)
						}
						break;
					case options.multiple
							&& $.trim(options.multipleSeparator) == ","
							&& KEY.COMMA:
					case KEY.TAB:
					case KEY.RETURN:
						if (selectCurrent()) {
							event.preventDefault();
							blockSubmit = true;
							return false
						}
						break;
					case KEY.ESC:
						select.hide();
						break;
					default:
						clearTimeout(timeout);
						timeout = setTimeout(onChange,options.delay);
						break
					}
				}).focus(function() {
			hasFocus++
		}).blur(function() {
			hasFocus = 0;
			if (!config.mouseDownOnSelect) {
				hideResults()
			}
		}).click(function() {
			if (options.clickFire) {
				if (!select.visible()) {
					onChange(0,true)
				}
			} else {
				if (hasFocus++ > 1 && !select.visible()) {
					onChange(0,true)
				}
			}
		}).bind(
				"search",function() {
					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(true,options,arguments[1]);
			if ("data" in arguments[1])
				cache.populate()
		}).bind("unautocomplete",function() {
			select.unbind();
			$input.unbind();
			$(input.form).unbind(".autocomplete")
		});
		function selectCurrent() {
			var selected = select.selected();
			if (!selected)
				return false;
			var v = selected.result;
			prevIoUsValue = v;
			if (options.multiple) {
				var words = trimWords($input.val());
				if (words.length > 1) {
					var seperator = options.multipleSeparator.length;
					var cursorAt = $(input).selection().start;
					var wordAt,progress = 0;
					$.each(words,word) {
						progress += word.length;
						if (cursorAt <= progress) {
							wordAt = i;
							return false
						}
						progress += seperator
					});
					words[wordAt] = v;
					v = words.join(options.multipleSeparator)
				}
				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 [ "" ];
			if (!options.multiple)
				return [ $.trim(value) ];
			return $.map(value.split(options.multipleSeparator),function(word) {
						return $.trim(value).length ? $.trim(word) : null
					})
		}
		function lastWord(value) {
			if (!options.multiple)
				return value;
			var words = trimWords(value);
			if (words.length == 1)
				return words[0];
			var cursorAt = $(input).selection().start;
			if (cursorAt == value.length) {
				words = trimWords(value)
			} else {
				words = trimWords(value.replace(value.substring(cursorAt),""))
			}
			return words[words.length - 1]
		}
		function autoFill(q,sValue) {
			if (options.autoFill
					&& (lastWord($input.val()).toLowerCase() == q.toLowerCase())
					&& lastKeyPressCode != KEY.BACKSPACE) {
				$input.val($input.val()
						+ sValue.substring(lastWord(prevIoUsValue).length));
				$(input).selection(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) {
				$input.search(function(result) {
					if (!result) {
						if (options.multiple) {
							var words = trimWords($input.val()).slice(0,-1);
							$input.val(words.join(options.multipleSeparator)
									+ (words.length ? options.multipleSeparator
											: ""))
						} else {
							$input.val("");
							$input.trigger("result",null)
						}
					}
				})
			}
		}
		;
		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);
			if (data) {
				if (data.length) {
					success(term,data)
				} else {
					var parsed = options.parse
							&& options.parse(options.noRecord)
							|| parse(options.noRecord);
					success(term,parsed)
				}
			} 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({
					mode : "abort",port : "autocomplete" + input.name,dataType : options.dataType,url : options.url,data : $.extend({
						q : lastWord(term),limit : options.max
					},extraParams),success : function(data) {
						var parsed = options.parse && options.parse(data)
								|| parse(data);
						cache.add(term,parsed);
						success(term,parsed)
					}
				})
			} else {
				select.emptyList();
				if (globalFailure != null) {
					globalFailure()
				} else {
					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 : 100,max : 1000,mustMatch : false,extraParams : {},selectFirst : true,formatItem : function(row) {
			return row[0]
		},formatMatch : null,autoFill : false,width : 0,multiple : false,multipleSeparator : " ",inputFocus : true,clickFire : false,highlight : function(value,term) {
			return value.replace(new RegExp("(?![^&;]+;)(?!<[^<>]*)("
					+ term
							.replace(/([\^\$\(\)\[\]\{\}\*\.\+\?\|\\])/gi,"\\$1") + ")(?![^<>]*>)(?![^&;]+;)","gi"),"<strong>$1</strong>")
		},scroll : true,scrollHeight : 180,scrollJumpPosition : true
	};
	$.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 (options.matchContains == "word") {
				i = s.toLowerCase().search("\\b" + sub.toLowerCase())
			}
			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;
			var stMatchSets = {},nullData = 0;
			if (!options.url)
				options.cacheLength = 1;
			stMatchSets[""] = [];
			for (var i = 0,ol = options.data.length; i < ol; i++) {
				var rawValue = options.data[i];
				rawValue = (typeof rawValue == "string") ? [ rawValue ]
						: rawValue;
				var value = options.formatMatch(rawValue,i + 1,options.data.length);
				if (typeof (value) === 'undefined' || value === false)
					continue;
				var firstChar = value.charAt(0).toLowerCase();
				if (!stMatchSets[firstChar])
					stMatchSets[firstChar] = [];
				var row = {
					value : value,data : rawValue,result : options.formatResult
							&& options.formatResult(rawValue) || value
				};
				stMatchSets[firstChar].push(row);
				if (nullData++ < options.max) {
					stMatchSets[""].push(row)
				}
			}
			;
			$.each(stMatchSets,value) {
				options.cacheLength++;
				add(i,value)
			})
		}
		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 (!options.url && options.matchContains) {
					var csub = [];
					for ( var k in data) {
						if (k.length > 0) {
							var c = data[k];
							$.each(c,x) {
								if (matchSubset(x.value,q)) {
									csub.push(x)
								}
							})
						}
					}
					return csub
				} else 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,q)) {
									csub[csub.length] = x
								}
							});
							return csub
						}
					}
				}
				return null
			}
		}
	};
	$.Autocompleter.Select = function(options,select,config) {
		var CLASSES = {
			ACTIVE : "ac_over"
		};
		var listItems,active = -1,data,term = "",needsInit = true,element,list;
		function init() {
			if (!needsInit)
				return;
			element = $("<div/>").hide().addClass(options.resultsClass).css(
					"position","absolute").appendTo(document.body).hover(
					function(event) {
						if ($(this).is(":visible")) {
							input.focus()
						}
						config.mouseDownOnSelect = false
					});
			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();
						if (options.inputFocus)
							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;
			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 && activeItem.length > 0) {
				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) {
			if (options.scrollJumpPosition
					|| (!options.scrollJumpPosition && !((step < 0 && active == 0) || (step > 0 && active == listItems
							.size() - 1)))) {
				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,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];
				$.data(li,"ac_data",data[i])
			}
			listItems = list.find("li");
			if (options.selectFirst) {
				listItems.slice(0,1).addClass(CLASSES.ACTIVE);
				active = 0
			}
			if ($.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).outerWidth(),top : offset.top + input.offsetHeight,left : offset.left
						}).show();
				if (options.scroll) {
					list.scrollTop(0);
					list.css({
						maxHeight : options.scrollHeight,overflow : 'auto'
					});
					if (navigator.userAgent.indexOf("MSIE") != -1
							&& 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) {
							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()
			}
		}
	};
	$.fn.selection = function(start,end) {
		if (start !== undefined) {
			return this.each(function() {
				if (this.createTextRange) {
					var selRange = this.createTextRange();
					if (end === undefined || start == end) {
						selRange.move("character",start);
						selRange.select()
					} else {
						selRange.collapse(true);
						selRange.moveStart("character",start);
						selRange.moveEnd("character",end);
						selRange.select()
					}
				} else if (this.setSelectionRange) {
					this.setSelectionRange(start,end)
				} else if (this.selectionStart) {
					this.selectionStart = start;
					this.selectionEnd = end
				}
			})
		}
		var field = this[0];
		if (field.createTextRange) {
			var range = document.selection.createRange(),orig = field.value,teststring = "<->",textLength = range.text.length;
			range.text = teststring;
			var caretAt = field.value.indexOf(teststring);
			field.value = orig;
			this.selection(caretAt,caretAt + textLength);
			return {
				start : caretAt,end : caretAt + textLength
			}
		} else if (field.selectionStart !== undefined) {
			return {
				start : field.selectionStart,end : field.selectionEnd
			}
		}
	}
})(jQuery);

.ac_results {
	padding: 0px;
	background-color: white;
	overflow: hidden;
	z-index: 99999;
	border:1px #c0c0c0 solid;
}

.ac_results ul {
	width: 100%;
	list-style-position: outside;
	list-style: none;
	padding: 0;
	margin: 0;
}

.ac_results li {
	margin: 0px;
	padding: 5px 5px;
	cursor: default;
	display: block;
	/* 
	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: 16px;
	overflow: hidden;
}

.ac_loading {
	background: white url('indicator.gif') right center no-repeat;
}

.ac_odd {
	background-color: #eee;
}

.ac_over {
	background-color: #fff;
	border:1px solid #31ACE2;
	color:#333;
}
原文链接:/ajax/163104.html

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