bigautocomplete是一款Jquery插件。用它实现仿搜索引擎文本框自动补全插件功能很实用,使用也很简单,引入了插件之后写几行代码就可以实现,可以灵活设置。
先看效果图:
上图是通过ajax请求服务器返回的数据。下面简单介绍如何使用。
一、如何使用:
引入jquery.bigautocomplete.js和jquery.bigautocomplete.css文件到你的页面中。
二、参数说明:
$("xxxxx").bigAutocomplete({data:[...],url:"",width:0,callback:{}})
参数 | 说明 |
data(可选): |
data:格式{data:[{title:null,result:{}},{title:null,result:{}}]}
url和data两个参数必须有一个,且只有一个生效,data优先。
|
url(可选): | url为字符串,用来ajax后台获取数据,返回的数据格式为data参数一样。 |
width(可选): | 下拉框的宽度,默认使用输入框宽度。 |
callback(可选): | 选中行后按回车或单击时回调的函数,用于返回选中行的其他数据及做一些操作。 |
三、示例:
1、本地数据:
html代码:
<input type="text" id="tt" value="" class="text" />
javascript代码:
$(function(){ $("#tt").bigAutocomplete({
width:543,
data:[{title:"中国好声音",result:{ff:"qq"}},
{title:"中国移动网上营业厅"},
{title:"中国银行"},
{title:"中国移动"},
{title:"中国好声音第三期"},
{title:"中国好声音 第一期"},
{title:"中国电信网上营业厅"},
{title:"中国工商银行"},
{title:"中国好声音第二期"},
{title:"中国地图"}],
callback:function(data){
alert(data.title);
}
}); })
js中data里的result可以不写。
2、ajax请求:
html代码:
<input type="text" id="company" value="" class="text" />
javascript代码:
$(function(){
$("#tt").bigAutocomplete({
width:543,
url:'http://localhost/test/suggestCom',
callback:function(data){
//alert(data.title);
}
});
})
服务端返回数据格式:
{"data":[{"title":"\u5317\u4eac\u73b0\u4ee3"},{"title":"\u5317\u4eac\u57ce\u5efa\u96c6\u56e2\u6709\u9650\u8d23\u4efb\u516c\u53f8"},{"title":"\u5317\u4eac\u5efa\u5de5\u96c6\u56e2\u6709\u9650\u8d23\u4efb\u516c\u53f8"},{"title":"\u5317\u4eac\u9996\u90fd\u65c5\u6e38\u96c6\u56e2\u6709\u9650\u8d23\u4efb\u516c\u53f8"},{"title":"\u5317\u4eac\u533b\u836f\u96c6\u56e2\u6709\u9650\u8d23\u4efb\u516c\u53f8"},{"title":"\u5317\u4eac\u4e00\u8f7b\u63a7\u80a1\u6709\u9650\u8d23\u4efb\u516c\u53f8"},{"title":"\u5317\u4eac\u91d1\u9685\u96c6\u56e2\u6709\u9650\u8d23\u4efb\u516c\u53f8"},{"title":"\u5317\u4eac\u71d5\u4eac\u5564\u9152\u96c6\u56e2\u516c\u53f8"},{"title":"\u5317\u4eac\u5e02\u71c3\u6c14\u96c6\u56e2\u6709\u9650\u8d23\u4efb\u516c\u53f8"},{"title":"\u5317\u4eac\u4f4f\u603b\u96c6\u56e2\u6709\u9650\u8d23\u4efb\u516c\u53f8"}]}
服务端的代码:(以ThinkPHP示例)
public function suggestCom(){
$wd = $_POST['keyword'];
$keywords = $wd; $company_model = M('Company'); $res = $company_model->where("name like '%".$keywords."%' or abbr like '%".$keywords."%' ")->limit(10)->select();
foreach($res as $v){
$suggestions[]= array('title' => $v['name']);
} echo json_encode(array('data' => $suggestions));
}
默认是POST过来的数据,名称是keyword,返回数据是和本地data一致的。
附上jquery.bigautocomplete.js和jquery.bigautocomplete.css文件代码:
jquery.bigautocomplete.js
(function($){
var bigAutocomplete = new function(){
this.currentInputText = null;//目前获得光标的输入框(解决一个页面多个输入框绑定自动补全功能)
this.functionalKeyArray = [9,20,13,16,17,18,91,92,93,45,36,33,34,35,37,39,112,113,114,115,116,117,118,119,120,121,122,123,144,19,145,40,38,27];//键盘上功能键键值数组
this.holdText = null;//输入框中原始输入的内容 //初始化插入自动补全div,并在document注册mousedown,点击非div区域隐藏div
this.init = function(){
$("body").append("<div id='bigAutocompleteContent' class='bigautocomplete-layout'></div>");
$(document).bind('mousedown',function(event){
var $target = $(event.target);
if((!($target.parents().andSelf().is('#bigAutocompleteContent'))) && (!$target.is(bigAutocomplete.currentInputText))){
bigAutocomplete.hideAutocomplete();
}
}) //鼠标悬停时选中当前行
$("#bigAutocompleteContent").delegate("tr", "mouseover", function() {
$("#bigAutocompleteContent tr").removeClass("ct");
$(this).addClass("ct");
}).delegate("tr", "mouseout", function() {
$("#bigAutocompleteContent tr").removeClass("ct");
}); //单击选中行后,选中行内容设置到输入框中,并执行callback函数
$("#bigAutocompleteContent").delegate("tr", "click", function() {
bigAutocomplete.currentInputText.val( $(this).find("div:last").html());
var callback_ = bigAutocomplete.currentInputText.data("config").callback;
if($("#bigAutocompleteContent").css("display") != "none" && callback_ && $.isFunction(callback_)){
callback_($(this).data("jsonData")); }
bigAutocomplete.hideAutocomplete();
}) } this.autocomplete = function(param){ if($("body").length > 0 && $("#bigAutocompleteContent").length <= 0){
bigAutocomplete.init();//初始化信息
} var $this = $(this);//为绑定自动补全功能的输入框jquery对象 var $bigAutocompleteContent = $("#bigAutocompleteContent"); this.config = {
//width:下拉框的宽度,默认使用输入框宽度
width:$this.outerWidth() - 2,
//url:格式url:""用来ajax后台获取数据,返回的数据格式为data参数一样
url:null,
/*data:格式{data:[{title:null,result:{}},{title:null,result:{}}]}
url和data参数只有一个生效,data优先*/
data:null,
//callback:选中行后按回车或单击时回调的函数
callback:null};
$.extend(this.config,param); $this.data("config",this.config); //输入框keydown事件
$this.keydown(function(event) {
switch (event.keyCode) {
case 40://向下键 if($bigAutocompleteContent.css("display") == "none")return; var $nextSiblingTr = $bigAutocompleteContent.find(".ct");
if($nextSiblingTr.length <= 0){//没有选中行时,选中第一行
$nextSiblingTr = $bigAutocompleteContent.find("tr:first");
}else{
$nextSiblingTr = $nextSiblingTr.next();
}
$bigAutocompleteContent.find("tr").removeClass("ct"); if($nextSiblingTr.length > 0){//有下一行时(不是最后一行)
$nextSiblingTr.addClass("ct");//选中的行加背景
$this.val($nextSiblingTr.find("div:last").html());//选中行内容设置到输入框中 //div滚动到选中的行,jquery-1.6.1 $nextSiblingTr.offset().top 有bug,数值有问题
$bigAutocompleteContent.scrollTop($nextSiblingTr[0].offsetTop - $bigAutocompleteContent.height() + $nextSiblingTr.height() ); }else{
$this.val(bigAutocomplete.holdText);//输入框显示用户原始输入的值
} break;
case 38://向上键
if($bigAutocompleteContent.css("display") == "none")return; var $previousSiblingTr = $bigAutocompleteContent.find(".ct");
if($previousSiblingTr.length <= 0){//没有选中行时,选中最后一行行
$previousSiblingTr = $bigAutocompleteContent.find("tr:last");
}else{
$previousSiblingTr = $previousSiblingTr.prev();
}
$bigAutocompleteContent.find("tr").removeClass("ct"); if($previousSiblingTr.length > 0){//有上一行时(不是第一行)
$previousSiblingTr.addClass("ct");//选中的行加背景
$this.val($previousSiblingTr.find("div:last").html());//选中行内容设置到输入框中 //div滚动到选中的行,jquery-1.6.1 $$previousSiblingTr.offset().top 有bug,数值有问题
$bigAutocompleteContent.scrollTop($previousSiblingTr[0].offsetTop - $bigAutocompleteContent.height() + $previousSiblingTr.height());
}else{
$this.val(bigAutocomplete.holdText);//输入框显示用户原始输入的值
} break;
case 27://ESC键隐藏下拉框 bigAutocomplete.hideAutocomplete();
break;
}
}); //输入框keyup事件
$this.keyup(function(event) {
var k = event.keyCode;
var ctrl = event.ctrlKey;
var isFunctionalKey = false;//按下的键是否是功能键
for(var i=0;i<bigAutocomplete.functionalKeyArray.length;i++){
if(k == bigAutocomplete.functionalKeyArray[i]){
isFunctionalKey = true;
break;
}
}
//k键值不是功能键或是ctrl+c、ctrl+x时才触发自动补全功能
if(!isFunctionalKey && (!ctrl || (ctrl && k == 67) || (ctrl && k == 88)) ){
var config = $this.data("config"); var offset = $this.offset();
$bigAutocompleteContent.width(config.width);
var h = $this.outerHeight() - 1;
$bigAutocompleteContent.css({"top":offset.top + h,"left":offset.left}); var data = config.data;
var url = config.url;
var keyword_ = $.trim($this.val());
if(keyword_ == null || keyword_ == ""){
bigAutocomplete.hideAutocomplete();
return;
}
if(data != null && $.isArray(data) ){
var data_ = new Array();
for(var i=0;i<data.length;i++){
if(data[i].title.indexOf(keyword_) > -1){
data_.push(data[i]);
}
} makeContAndShow(data_);
}else if(url != null && url != ""){//ajax请求数据
$.post(url,{keyword:keyword_},function(result){
makeContAndShow(result.data)
},"json")
} bigAutocomplete.holdText = $this.val();
}
//回车键
if(k == 13){
var callback_ = $this.data("config").callback;
if($bigAutocompleteContent.css("display") != "none"){
if(callback_ && $.isFunction(callback_)){
callback_($bigAutocompleteContent.find(".ct").data("jsonData"));
}
$bigAutocompleteContent.hide();
}
} }); //组装下拉框html内容并显示
function makeContAndShow(data_){
if(data_ == null || data_.length <=0 ){
return;
} var cont = "<table><tbody>";
for(var i=0;i<data_.length;i++){
cont += "<tr><td><div>" + data_[i].title + "</div></td></tr>"
}
cont += "</tbody></table>";
$bigAutocompleteContent.html(cont);
$bigAutocompleteContent.show(); //每行tr绑定数据,返回给回调函数
$bigAutocompleteContent.find("tr").each(function(index){
$(this).data("jsonData",data_[index]);
})
} //输入框focus事件
$this.focus(function(){
bigAutocomplete.currentInputText = $this;
}); }
//隐藏下拉框
this.hideAutocomplete = function(){
var $bigAutocompleteContent = $("#bigAutocompleteContent");
if($bigAutocompleteContent.css("display") != "none"){
$bigAutocompleteContent.find("tr").removeClass("ct");
$bigAutocompleteContent.hide();
}
} }; $.fn.bigAutocomplete = bigAutocomplete.autocomplete; })(jQuery)
jquery.bigautocomplete.css
@charset "utf-8";
.bigautocomplete-layout{display:none;background-color:#FFFFFF;border:1px solid #BCBCBC;position:absolute;z-index:9999 !important;max-height:220px;overflow-x:hidden;overflow-y:auto; text-align:left;}
.bigautocomplete-layout table{border-collapse:collapse;border-spacing:;background:none repeat scroll 0 0 #FFFFFF;width:100%;cursor:default;}
.bigautocomplete-layout table tr{background:none repeat scroll 0 0 #FFFFFF;}
.bigautocomplete-layout .ct{background:none repeat scroll 0 0 #D2DEE8 !important;}
.bigautocomplete-layout div{word-wrap:break-word;word-break:break-all;padding:1px 5px;}
css经过改写,以适应某些情况不兼容的bug。
页面html代码:
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>Jquery实现仿搜索引擎文本框自动补全插件</title> <script src="js/jquery-1.7.min.js" type="text/javascript"></script>
<script src="js/bigautocomplete/jquery.bigautocomplete.js?v=2"></script>
<link rel="stylesheet" href="css/bigautocomplete/jquery.bigautocomplete.css" type="text/css" />
<script type="text/javascript">
$(function(){
$("#tt").bigAutocomplete({
width:543,
url:'__MODULE__/test/suggestCom',
callback:function(data){
//alert(data.title);
}
}); })
</script> </head>
<body> <style type="text/css">
*{margin:0;padding:0;list-style-type:none;}
a,img{border:0;}
.demo{width:720px;margin:30px auto;}
.demo h2{font-size:16px;color:#3366cc;height:30px;}
.demo li{float:left;}
.text{width:529px;height:22px;padding:4px 7px;padding:6px 7px 2px\9;font:16px arial;border:1px solid #cdcdcd;border-color:#9a9a9a #cdcdcd #cdcdcd #9a9a9a;vertical-align:top;outline:none;margin:0 5px 0 0;}
.button{width:95px;height:32px;padding:0;padding-top:2px\9;border:0;background-position:0 -35px;background-color:#ddd;cursor:pointer}
</style> <div class="demo">
<h2>bigautocomplete联想输入测试</h2>
<form action="" method="post" name="searchform" id="searchform" class="searchinfo">
<ul>
<li><input type="text" id="tt" value="" class="text" /></li>
<li><input type="submit" value="搜索" class="button" /></li>
</ul>
</form>
</div> </body>
</html>