搜索框自动联想功能

2019独角兽企业重金招聘Python工程师标准>>> hot3.png

一.使用场景:类似百度搜索的自动联想功能

二.官网:http://bassistance.de/jquery-plugins/jquery-plugin-autocomplete/

相关博客:http://www.cnblogs.com/yuzhongwusan/archive/2012/06/04/2534690.html

三.使用方法:

1.)依赖:(文件看末尾附件区域)




附件:

2.)初始化

$(function() {
	var emails = [{
		company: "IDG资本",
		name: "张三",
		time: "2017-1-2",
		content: "拜访主题1"
	}, {
		company: "资本2",
		name: "李四",
		time: "2014-1-2",
		content: "拜访主题2"
	}, {
		company: "资本3",
		name: "王五",
		time: "2016-1-2",
		content: "拜访主题3"
	}, {
		company: "资本4",
		name: "西瓜",
		time: "2015-4-2",
		content: "拜访主题4"
	}, {
		company: "资本5",
		name: "李四",
		time: "2014-1-2",
		content: "拜访主题5"
	}];
	//autocomplete配置选项
	var options = {
		minChars: 1,
		max: 10,
		matchContains: true,
		multiple: true,
		scrollHeight: 400, //结果框高度
		formatItem: function(row, i, max) { //显示出来的项格式,i表示数据的行数,row代表一行数据,max显示的最大数据量
			return "
" + row.company +" " + row.name +" " + row.time + "
"; }, formatMatch: function(row, i, max) { //用户输入的内容在哪些数据项里面搜索。例如现在是在productName搜索,若要加上ProductID则为 return row.productID+" "+ row.ProductName; return row.name + " " + row.company + " " + row.time + " " + row.content; } }; //autocomplete初始化函数 function initAutoComplete(json) { $("#autocomplete").autocomplete(json, options); $("#autocomplete").result(function(event, data, formatted) { //data 选中的行json对象. formatted是formatMatch返回的值. $("#autocomplete").val(data.name); }); } initAutoComplete(emails); //调用初始化函数,传入本地数据做测试,可通过/*==========加载时执行的语句==========*/传入json数据 /*==========加载时执行的语句==========*/ // $(function() { // //加载城市数据, 并在回调函数中用返回的数据初始化autocomplete // $.getJSON("products.ashx", {}, function(json) { // initAutoComplete(json); // }) // }); }) // 自动联想功能结束

3.)配置参数说明

dataType(String):数据类型.Default:text,如果第一个参数是url地址,并且返回的是json数据,则设置此配置属性为'json'即可;

minChars(Number):在触发autoComplete前用户至少需要输入的字符数.Default: 1,如果设为0,在输入框内双击或者删除输入框内内容时显示列表;

max(Number):autoComplete下拉显示项目的个数.Default: 10;

width(Number):指定下拉框的宽度. Default: input元素的宽度;

delay(Number):击键后激活autoComplete的延迟时间(单位毫秒).Default: 远程为400 本地10;

autoFill(Boolean):要不要在用户选择时自动将用户当前鼠标所在的值填入到input框. Default: false;

mustMatch(Boolean):如果设置为true,autoComplete只会允许匹配的结果出现在输入框,所有当用户输入的是非法字符时将会得不到下拉框.Default: false;

matchContains(Boolean):决定比较时是否要在字符串内部查看匹配,如ba是否与foo bar中的ba匹配.使用缓存时比较重要.不要和autofill混用.Default: false;

selectFirst(Boolean):如果设置成true,在用户键入tab或return键时autoComplete下拉列表的第一个值 将被自动选择,尽管它没被手工选中(用键盘或鼠标).当然如果用户选中某个项目,那么就用用户选中的值. Default: true;

cacheLength(Number):缓存的长度.即对从数据库中取到的结果集要缓存多少条记录.设成1为不缓存.Default: 10;

matchSubset(Boolean):autoComplete可不可以使用对服务器查询的缓存,如果缓存对foo的查询结果,那么如果用户 输入foo就不需要再进行检索了,直接使用缓存.通常是打开这个选项以减轻服务器的负担以提高性能.只会在缓存长度大于1时有效.Default: true;

matchCase(Boolean):比较是否开启大小写敏感开关.使用缓存时比较重要.如果你理解上一个选项,这个也就不难理解,就好比foot要不要到FOO的缓存中去找.Default: false;

multiple(Boolean):是否允许输入多个值即多次使用autoComplete以输入多个值. Default: false;

multipleSeparator(String):如果是多选时,用来分开各个选择的字符. Default: ",";

scroll(Boolean):当结果集大于默认高度时是否使用卷轴显示 Default: true;

scrollHeight(Number):自动完成提示的卷轴高度用像素大小表示  Default: 180;

formatItem(Function):为每个要显示的项目使用高级标签.即对结果中的每一行都会调用这个函数,返回值将用LI元素包含显示在 下拉列表中. Autocompleter会提供三个参数(row, i, max): 返回的结果数组, 当前处理的行数(即第几个项目,是从1开始的自然数), 当前结果数组元素的个数即项目的个数. Default: none, 表示不指定自定义的处理函数,这样下拉列表中的每一行只包含一个值;

formatMatch(Function):对每一行数据使用此函数格式化需要查询的数据格式. 返回值是给内部搜索算法使用的. 参数值row i max;

formatResult(Function):和formatItem类似,但可以将将要输入到input文本框内的值进行格式化.同样有三个参 数,和formatItem一样.Default: none,表示要么是只有数据,要么是使用formatItem提供的值;

extraParams(Object):为后台(一般是服务端的脚本)提供更多的参数.和通常的作法一样是使用一个键值对对象.如果传过去的值是 { bar:4 },将会被autocompleter解析成my_autocomplete_backend.php?q=foo&bar=4 (假设当前用户输入了foo). Default: {};

result (handler)  Returns: jQuery:此事件会在用户选中某一项后触发,参数为: 
    event: 事件对象. event.type为result. 
    data: 选中的数据行. 
    formatted:formatResult函数返回的值 
    例如: $("#singleBirdRemote").result(function(event, data, formatted) { 
                  //如选择后给其他控件赋值,触发别的事件等等 
              });

4.)注意点:

4.1jq版本要1.9以下,我选的是1.7

4.2css里面的尺寸单位被我改成了rem,自己注意调整。

 

1.2jquery.autocomplete.js

/*
 * jQuery Autocomplete plugin 1.1
 *
 * Copyright (c) 2009 J枚rn 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 15 2009-08-22 10:30:27Z 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) {
		// a keypress means the input has focus
		// avoids issue where input had focus before the autocomplete was applied
		hasFocus = 1;
		// 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");
	});
	
	
	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;
				$.each(words, function(i, word) {
					progress += word.length;
					if (cursorAt <= progress) {
						wordAt = i;
						return false;
					}
					progress += seperator;
				});
				words[wordAt] = v;
				// TODO this should set the cursor to the right position, but it gets overriden somewhere
				//$.Autocompleter.Selection(input, progress + seperator, progress + seperator);
				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];
	}
	
	// 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)
			$(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) {
			// 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( "" );
							$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);
		// 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(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 {
			// 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) {
		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 (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;
		// 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 = $("
") .hide() .addClass(options.resultsClass) .css("position", "fixed") .appendTo(document.body); list = $("
    ").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 = $("
  • ").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 : $(input).width(), top: offset.top + input.offsetHeight, left: offset.left }).show(); if(options.scroll) { list.scrollTop(0); list.css({ maxHeight: options.scrollHeight, overflow: 'auto' }); if($.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(); } }; }; $.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);

1.1jquery.autocomplete.css

.ac_results {
	padding: 0px;
	border: 0.01rem solid black;
	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 {
	margin: 0px;
	padding: 0.02rem 0.05rem;
	cursor: default;
	display: block;
	border-bottom: 0.01rem solid #e0e0e0;
	/* 
	if width will be 100% horizontal scrollbar will apear 
	when scroll mode will be used
	*/
	/*width: 100%;*/
	font: menu;
	font-size: 0.3rem;
	/* 
	it is very important, if line-height not setted or setted 
	in relative units scroll will be broken in firefox
	*/
	line-height: 1.6;
	overflow: hidden;
}

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

.ac_odd {
	/* background-color: #eee; */
}
.ac_results Strong{
	font-weight: bold;
	color: #000;/*被检索的关键字黑色*/
}
.ac_over {
	/* background-color: #0A246A;
	color: white; */
}

转载于:https://my.oschina.net/Cubicluo/blog/833950

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