<!doctype html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>搜索</title>
<style type="text/css">
body, ul, li {
margin: 0;
padding: 0;
}
body {
font-size: 12px;
font-family: sumsun, arial;
color: #666666;
background: #FFFFFF;
}
.gover_search {
position: relative;
z-index: 99;
height: 63px;
padding: 15px 0 0 20px;
border: 1px solid #b8cfe6;
border-bottom: 0;
background: url(../images/gover_search_bg.gif) repeat-x 0 0;
}
.gover_search_form {
height: 36px;
}
.gover_search .search_t {
float: left;
width: 112px;
line-height: 26px;
color: #666666;
}
.gover_search .input_search_key {
float: left;
width: 462px;
height: 18px;
padding: 3px;
margin-right: 5px;
border: 1px solid #cccccc;
line-height: 18px;
background: #FFFFFF;
}
.gover_search .search_btn {
float: left;
width: 68px;
height: 26px;
overflow: hidden;
border: 1px solid #cccccc;
text-align: center;
color: #ff3300;
letter-spacing: 5px;
background: url(../images/gover_search_bg.gif) no-repeat 0 -79px;
cursor: pointer;
font-weight: bold;
}
.gover_search .search_suggest {
position: absolute;
z-index: 999;
left: 132px;
top: 41px;
width: 468px;
border: 1px solid #999999;
display: none;
}
.gover_search .search_suggest li {
height: 24px;
overflow: hidden;
padding-left: 3px;
line-height: 24px;
background: #FFFFFF;
cursor: default;
}
.gover_search .search_suggest li.hover {
background: #DDDDDD;
}
</style>
<script src="http://libs.baidu.com/jquery/2.0.0/jquery.min.js"></script>
</head>
<body>
<div class="gover_search">
<div class="gover_search_form clearfix"> <span class="search_t">关键词匹配搜索</span>
<input type="text" class="input_search_key" id="gover_search_key" placeholder="请输入关键词直接搜索" />
<button type="submit" class="search_btn">搜索</button>
<div class="search_suggest" id="gov_search_suggest">
<ul>
</ul>
</div>
</div>
</div>
<script type="text/javascript">
//实现搜索输入框的输入提示js类
function oSearchSuggest(searchFuc){
var input = $('#gover_search_key');
var suggestWrap = $('#gov_search_suggest');
var key = "";
var init = function(){
input.bind('keyup',sendKeyWord);
input.bind('blur',function(){setTimeout(hideSuggest,100);})
}
var hideSuggest = function(){
suggestWrap.hide();
}
//发送请求，根据关键字到后台查询
var sendKeyWord = function(event){
//键盘选择下拉项
if(suggestWrap.css('display')=='block'&&event.keyCode == 38||event.keyCode == 40){
var current = suggestWrap.find('li.hover');
if(event.keyCode == 38){
if(current.length>0){
var prevLi = current.removeClass('hover').prev();
if(prevLi.length>0){
prevLi.addClass('hover');
input.val(prevLi.html());
}
}else{
var last = suggestWrap.find('li:last');
last.addClass('hover');
input.val(last.html());
}
}else if(event.keyCode == 40){
if(current.length>0){
var nextLi = current.removeClass('hover').next();
if(nextLi.length>0){
nextLi.addClass('hover');
input.val(nextLi.html());
}
}else{
var first = suggestWrap.find('li:first');
first.addClass('hover');
input.val(first.html());
}
}
//输入字符
}else{
var valText = $.trim(input.val());
if(valText ==''||valText==key){
return;
}
searchFuc(valText);
key = valText;
}
}
//请求返回后，执行数据展示
this.dataDisplay = function(data){
if(data.length<=0){
suggestWrap.hide();
return;
}
//往搜索框下拉建议显示栏中添加条目并显示
var li;
var tmpFrag = document.createDocumentFragment();
suggestWrap.find('ul').html('');
for(var i=0; i<data.length; i++){
li = document.createElement('LI');
li.innerHTML = data[i];
tmpFrag.appendChild(li);
}
suggestWrap.find('ul').append(tmpFrag);
suggestWrap.show();
//为下拉选项绑定鼠标事件
suggestWrap.find('li').hover(function(){
suggestWrap.find('li').removeClass('hover');
$(this).addClass('hover');
},function(){
$(this).removeClass('hover');
}).bind('click',function(){
input.val(this.innerHTML);
suggestWrap.hide();
});
}
init();
};
//实例化输入提示的JS,参数为进行查询操作时要调用的函数名
var searchSuggest = new oSearchSuggest(sendKeyWordToBack);
//这是一个模似函数，实现向后台发送ajax查询请求，并返回一个查询结果数据，传递给前台的JS,再由前台JS来展示数据。本函数由程序员进行修改实现查询的请求
//参数为一个字符串，是搜索输入框中当前的内容
function sendKeyWordToBack(keyword){
/* var obj = {
"keyword" : keyword
};
$.ajax({
type: "POST",
url: "${ctx}/front/suqiu2/search/prompt-keyword.action",
async:false,
data: obj,
dataType: "json",
success: function(data){
//var json = eval("("+data+")");
var key=data.split(",");
var aData = [];
for(var i=0;i<key.length;i++){
//以下为根据输入返回搜索结果的模拟效果代码,实际数据由后台返回
if(key[i]!=""){
aData.push(key[i]);
}
}
//将返回的数据传递给实现搜索输入框的输入提示js类
searchSuggest.dataDisplay(aData);
}
}); */
//以下为根据输入返回搜索结果的模拟效果代码,实际数据由后台返回
var aData = [];
aData.push(keyword+'返回数据1');
aData.push(keyword+'返回数据2');
aData.push(keyword+'不是有的人天生吃素的');
aData.push(keyword+'不是有的人天生吃素的');
aData.push(keyword+'2012是真的');
aData.push(keyword+'2012是假的');
//将返回的数据传递给实现搜索输入框的输入提示js类
searchSuggest.dataDisplay(aData);
}
</script>
</body>
</html>
仿百度谷歌搜索输入下拉提示
