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index.html
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<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title>Document</title>
<script src="https://cdn.bootcss.com/jquery/3.3.1/jquery.min.js"></script>
<style>
div ul li {
margin: 0;
padding: 0;
}
ul {
padding: 0;
}
ul li {
list-style: none;
}
input {
border: none;
}
a {
text-decoration: none;
color:#000;
}
.xue-mall-header-search {
width: 600px;
margin: 0 auto;
position: relative;
}
.xue-mall-header-search .xue-mall-search-box .xue-mall-search-btn {
position: absolute;
right: 10px;
height: 32px;
top: 0px;
width: 70px;
line-height: 32px;
text-align: center;
cursor: pointer;
color: #333333;
font-size: 12px;
}
.xue-mall-header-search .xue-mall-search-box .search-input {
border: none;
border: 1px solid #ccc;
width: 100%;
height: 30px;
border-radius: 10px;
padding-left: 30px;
outline: medium;
}
.xue-mall-header-search .xue-mall-search-box .search-input.showing {
border-bottom: none;
padding-left: 12px;
transition: all 0.3s;
}
.xue-mall-header-search .xue-mall-search-box.xue-mall-search-showing {
border-radius: 20px 20px 0 0;
border-bottom-color: transparent;
transition: all 0.3s;
}
.search-Prefix-word {
z-index: 222;
background: #fff;
width: 100%;
margin-top: -8px;
box-sizing: border-box;
height: 0;
border-bottom-right-radius: 10px;
border-bottom-left-radius: 10px;
position: absolute;
}
.search-Prefix-word.hidding {
display: none;
}
.search-Prefix-word.showing {
display: block;
border: 1px solid #ccc;
border-top: none;
}
.search-Prefix-word ul li {
border-bottom: 0.5px solid #F1F1F1;
font-size: 14px;
line-height: 20px;
color: #999999;
}
.search-Prefix-word ul li {
display: block;
padding: 12px;
}
.search-Prefix-word ul li:first-child {
border-top: 1px solid #ccc;
}
.search-Prefix-word ul li:hover {
background: #e4e8e8;
}
.search-Prefix-word ul li.show {
background: #e4e8e8;
}
.search-Prefix-word ul li a .search-P-info {
color: #FF0021;
}
</style>
</head>
<body>
<div class="xue-mall-header-search fr">
<div class="xue-mall-search-box">
<input type="text" class="search-input form-control" aria-describedby="icon-search" placeholder="搜索：语文" name="keyword" id="search-input"
autocomplete="off">
<span class="xue-mall-search-btn" id="xue-mall-search-btn">
<i class="iconfont icon-fangdajing">搜索图标</i>
</span>
</div>
<div class="search-Prefix-word hidding" id="search-Prefix-word">
<ul>
</ul>
</div>
</div>
</body>
<script>
var $searchPrefixWord = $("#search-Prefix-word")
var $searchInput = $("#search-input")
var index = -1;
var searchB = {
$searchPrefixWordUl: $(".search-Prefix-word ul"),
$searchInputBox : "#search-input"
}
var debounce = function (idle, action) {
var last
return function () {
var ctx = this,
args = arguments
clearTimeout(last)
last = setTimeout(function () {
action.apply(ctx, args)
}, idle)
}
}
var showList = function () {
var hotWord = $searchPrefixWord.find("ul");
var botWordLen = hotWord.find("li").length;
var inputVal = $searchInput.val()
if (inputVal != '' && botWordLen > 0) {
$searchPrefixWord.addClass("showing")
$searchInput.addClass("showing")
//计算历史记录弹层的高度，为了动画效果，默认的时候高度为0
var listHeight = hotWord.outerHeight(true);
//给列表框赋值高度
$searchPrefixWord.css({
height: listHeight
});
}
}
var handler = function (val) {
var inputValue = val;
if (inputValue === '') {
$searchPrefixWord.removeClass("showing")
$searchInput.removeClass("showing")
} else {
var param = {
keyword: inputValue
}
$.ajax({
// url: 'http://touch.xueersi.com/QuerySug/getQuerySug',
url: '/QuerySug/getQuerySug',
data: param,
type: "GET",
dataType: 'json',
success: function (resopnse) {
$searchPrefixWord.find('ul li').remove();
if (resopnse.stat === 1) {
var data = resopnse.data.querySugList;
// data = data.length > 10 ? data.slice(0, 9) : data;
var total = data.length;
var sub = function (inputStr, dbStr) {
var re = new RegExp('(' + inputStr + ')', 'gi')
return dbStr.replace(re, '<span class="search-P-info">$1</span>')
}
if (total > 0) {
$searchPrefixWord.addClass("showing")
} else {
$searchPrefixWord.addClass("hidding")
}
var str = "";
for (var i = 0; i < data.length; i++) {
var item = sub(inputValue, data[i])
str += ' <li><a href="http://touch.xueersi.com/search?keyword=' + data[i] + '"> ' + item + '</a> </li>'
}
$searchPrefixWord.find("ul").append(str);
showList()
}
}
});
}
}
$(function () {
$(document).on('input propertychange', search.$searchInputBox, debounce(100, function () {
handler($searchInput.val())
}))
})
//拼接请求地址
var search = function () {
var searchVal = $.trim($searchInput.val());
var url = 'XXXXX' + '?keyword=' + searchVal ;
window.location.href = url;
}
var getInputValue = function (obj) {
$searchInput.val($.trim(obj.find("a").text()))
$searchInput.removeClass("showing")
$searchPrefixWord.removeClass("showing")
}
//搜索框获取焦点事件
$('body').off('click', searchB.$searchInputBox, ).on('focus', searchB.$searchInputBox, function () {
showList()
})
// 点击联想词列表搜索事件
$(".xue-mall-header-search").on('click', 'li', function (ev) {
var that = $(this)
getInputValue(that)
})
//搜索框按keydown enter键事件
$('body').off('keydown', searchB.$searchInputBox).on('keydown', search.$searchInputBox, function (e) {
var liLen = $($searchPrefixWord.find("ul")).find("li").length;
switch (e.keyCode) {
case 13:
if (index != -1) {
var obj = $($($searchPrefixWord.find("ul")).find("li")[index])
getInputValue(obj)
}
search();
break;
case 38:
if (index == -1 || index == 0) {
index = liLen - 1
} else {
index--
if (index == liLen - 1) {
index = 0
}
}
$($($searchPrefixWord.find("ul")).find("li")[index]).addClass("show").siblings().removeClass("show");
break;
case 40:
if (index != -1) {
index++;
index = index == liLen ? 0 : index;
} else {
index = index == -1 ? 0 : index;
}
$($($searchPrefixWord.find("ul")).find("li")[index]).addClass("show").siblings().removeClass("show")
break;
}
})
// hove联想词列表事件
$($($searchPrefixWord.find("ul")).find("li")).hover(function () {
index = $(this).index()
$($($searchPrefixWord.find("ul")).find("li")[index]).addClass("show").siblings().removeClass("show");
});
// 点击body隐藏联想词列表
$(document).on('click', function (e) {
var hotWord = $searchPrefixWord.find("ul");
var botWordLen = hotWord.find("li").length;
if (!($(e.target).hasClass("search-input"))) {
if (botWordLen > 0) {
$searchPrefixWord.removeClass("showing")
$searchPrefixWord.addClass("hidding")
$searchInput.removeClass("showing")
}
}
})
</script>
</html>