完善了以下功能：
1，中文传参，参数名称没有改动，仍是默认的q：
String toPage = Parameter("q");
page= new Bytes("ISO-8859-1"), "UTF-8");
2，支持上下翻页，并且文本框的值即时改动，和google、百度一个效果
3，鼠标事件，鼠标离开时层失去焦点，不锁定提示层
4，已经匹配的字用细体显示，未匹配的用黑体显示，
5，，增加提交之前的验证，比入输入中文时候需要敲空格，则输入之前不传参，
还有一些细微的完善，此处不赘述，需注意的是，若需实现本人完善的效果，需要另存本人的jquery.autocomplete.js文件，以及jquery.autocomplete.css文件，另外几个文件，请到下载：bassistance.de/jquery-plugins/jquery-plugin-autocomplete/
jquery.jsp：
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
"/TR/html4/loose.dtd">
<html>
<head>
<script src="js/jquery-latest.js"></script>
<link rel="stylesheet" href="js/jquery.autocomplete.css" type="text/css" />
<script type="text/javascript" src="js/jquery.bgiframe.min.js"></script>
<script type="text/javascript" src="js/jquery.dimensions.js"></script>
<script type="text/javascript" src="js/jquery.autocomplete.js"></script>
<script>
$(document).ready(function(){
$("#example").autocomplete("Jquery");
});
</script>
</head>
<body>
API Reference: <input id="example" size=40/> (try "C" or "E")
</body>
</html>
jquery.autocomplete.js代码如下：
/**
* 此js为本人修改完善版，以下功能
*  ---李小朋  2:45 2010-10-31
**/
;(function($) {
$.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) {
igger("search", [handler]);
},
flushCache: function() {
igger("flushCache");
},
setOptions: function(options){
igger("setOptions", [options]);
},
unautocomplete: function() {
igger("unautocomplete");
}
});
$.Autocompleter = function(input, options) {
var KEY = {
UP: 38,
DOWN: 40,
DEL: 46,
TAB: 9,
RETURN: 13,
ESC: 27,
COMMA: 188,
PAGEUP: 33,
jquery翻书效果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() ) {
<();
} 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 (!useDownOnSelect) {
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].LowerCase() == q.toLowerCase() ) {
result = data[i];
break;
}
}
}
if( typeof fn == "function" ) fn(result);
else $igger("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();
$(input.form).unbind(".autocomplete");
});
function selectCurrent() {
var selected = select.selected();
if( !selected )
return false;
var v = sult;
previousValue = v;
if ( options.multiple ) {
var words = trimWords($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();
$igger("result", [selected.data, selected.value]);
return true;
}
function onChange(crap, skipPrevCheck) {
if( lastKeyPressCode == KEY.DEL ) {
select.hide();
return;
}
var currentValue = $input.val();
if ( !skipPrevCheck && currentValue == previousValue )
return;
previousValue = currentValue;
currentValue = lastWord(currentValue);
if ($.trim(currentValue).length >= options.minChars) {
$input.addClass(options.loadingClass);
if (!options.matchCase)
currentValue = LowerCase();
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 t
he 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 = LowerCase();
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()
};
$.aParams, 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
failure(term);
}
};
function parse(data) {
var parsed = [];
var rows = data.split("&");
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() {
$veClass(options.loadingClass);
};
};
$.Autocompleter.defaults = {
inputCla
ss: "ac_input",
resultsClass: "ac_results",
loadingClass: "ac_loading",
minChars: 1,
delay: 400,
matchCase: false,
matchSubset: true,
matchContains: false,
cacheLength: 10,
max: 10,
mustMatch: false,
extraParams: {},
selectFirst: false,
formatItem: function(row) {return row[0]; },
formatMatch: null,
autoFill: false,
width: 0,
multiple: false,
multipleSeparator: ", ",
highlight: function(value, term) {
place($.trim(term), "<span style='font-weight:Lighter;' >"+$.trim(term)+"</span>");
},
scroll: false,
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" + LowerCase());
}
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 dat

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