<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Document</title>
<style>
*{
margin:0;
padding:0;
}
input{
display:block;
list-style:none;
}
html,body{
color:#000;
font-size:14px;
font-family:'微软雅黑';
}
.box{
margin:50px auto;
width:300px;
}
.box input{
padding:0 10px;
width:278px;
height:30px;
border:1px solid green;
}
.box ul{
display:none;
border:1px solid green;
border-top:none;
}
.box ul li{
list-style:none;
padding:0 10px;
height:30px;
line-height:30px;
cursor:pointer;
}
.box ul li:hover{
background:#eee;
}
</style>
</head>
<body>
<div class='box'>
<input type="text" id='searchInp'/>
<ul id='searchBox'>
<li>1111</li>
<li>2222</li>
<li>3333</li>
<li>4444</li>
</ul>
</div>
<script src='jquery.min.js'></script>
<script>
var searchModule = (function(){
var $searchInp = $('#searchInp'),
$searchBox = $('#searchBox');
//向百度的服务器发送JSONP请求，把数据绑定到容器当中
function bindHTML(){
var searchKey = $searchInp.val();
function callback(data){
data = data['g'];
var str = '';
$.each(data,function(index,item){
if(index<=3){
str += '<li>'+item+'</li>'
}
})
$searchBox.html(str).stop().slideDown(300);
}
$.ajax({
url:"https://sp0.baidu.com/5a1Fazu8AA54nxGKo9WTAnF6hhy/su?wd="+searchKey,
dataType:"jsonp",
jsonp:'cb',
success:callback
})
}
//事件绑定和模块的入口
function init(){
//文本框获取焦点或者输入内容，判断当前文本框中是否有内容，有内容绑定数据，没有内容隐藏展示框
$searchInp.on("focus keyup",function(){
var val = $(this).val();
if(val.length>0){
bindHTML();
return;
}
$searchBox.stop().slideUp(300);
}).on('blur',function(){
window.setTimeout(function(){
$searchBox.stop().slideUp(300);
},3000)
})
//给展示框中的li绑定方法
$searchBox.on('click',function(e){
var tar = e.target,
tarTag = tar.tagName.toUpperCase(),
$tar = $(tar);
if(tarTag==="LI"){
$searchInp.val($tar.html());
$(this).stop().slideUp(300);
}
})
}
return {
init:init
}
})()
searchModule.init();
</script>
</body>
</html>
