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bigautocomplete实现联想输入,自动补全

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)
View Code

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:0;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;}
View Code

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>
View Code

 

posted @ 2015-04-25 15:22  飞鸿影  阅读(7470)  评论(5编辑  收藏  举报