JavaScript实现前端实时搜索功能

<div class="searcher">
 <p class="searcher-main">
 <i><img src="img/icon/icon-search-map.png"/></i>
 <input class="searcher-text" placeholder="请输入档口名称"></input>
 </p>
 <p class="searcher-cancel">取消</p>
</div>

 .searcher {
 background: rgba(255, 255, 255, 0);
 position: fixed;
 z-index: 999;
 width: 100%;
 height: 6rem;
 text-align: center;
 font-size: 1.6rem;
 }

 .searcher-main {
 background: #F4F4F4;
 position: absolute;
 left: 50%;
 top: 1.2rem;
 margin-left: -45%;
 border-radius: 1.6rem;
 width: 80%;
 height: 3rem;
 line-height: 3rem;
 } 

 .searcher-text {
 width: 80%;
 text-align: center;
 border: none;
 outline: none;
 background: #F4F4F4;
 }

 .searcher-cancel {
 position: absolute;
 width: 10%;
 height: 3rem;
 line-height: 3rem;
 color: #929292;
 top: 1.2rem;
 right: 1rem;
 }

 //监听input框，实时渲染
 $('.searcher-text').on('input', function() {
 initSearchList();
 });

 //渲染搜索列表
 function initSearchList() {
 var List = $('.searcher-land ul');
 var params = {};
 //搜索过滤字符
 var SEARCH_KEY = $('.searcher-text').val()
 params['action'] = 'get_search_key_list';
 params['market_iid'] = 1001;
 params['search_type'] = TYPE;
 params['search_key'] = replaceIllegalStr(SEARCH_KEY);

 epm.ajax(params, function(result) {
 console.log(result);
 console.log(TYPE)
 var html = '';
 List.html('');
 //有结果
 if(result.data.length > 0) {
  $.each(result.data, function(index, value) {
  goodName = value['goods_name'];
  shopName = value['shop_name'];
  //判断Name类型
  itemName = (goodName) ? goodName : shopName;
  html += '<li class="goods-list">' + itemName + '</li>'
  });
  $('.searcher-list').html(html);
 }
 //无结果
 else {
  html = '<div class="no-goods">暂时无法找到此选项~</div>';
  $('.searcher-list').html(html);
 }
 });
 }

function replaceIllegalStr(str) {
 var reg;
 var illegal_list = ["/", "\\",
 "[", "]",
 "{", "}",
 "<", ">",
 "＜", "＞",
 "「", "」",
 "：", "；",
 "、", "•",
 "^", "'", "\"",
 "\r", "\r\n", "\\n", "\n"];
 for (var i = 0; i < illegal_list.length; i++) {
 if (str.indexOf(illegal_list[i]) >= 0) {
 if (illegal_list[i] == '\\' || illegal_list[i] == '[') {
 reg = new RegExp('\\' + illegal_list[i], "g");
 } else {
 reg = new RegExp(illegal_list[i], "g");
 }
 str = str.replace(reg, '');
 }
 }
 return str.trim();
}

//设置缓存
 epm.setLocalItem = function(key, value) {
 if (window.localStorage) {
 localStorage.setItem(key, value);
 } else {
 //后备方案
 setCookie(key, value);
 }
 };

//提取缓存
 epm.getLocalItem = function(key) {
 if (window.localStorage) {
 return localStorage.getItem(key);
 } else {
 //后备方案
 return getCookie(key);
 }
 };

//删除缓存
 epm.removeLocalItem = function(key) {
 if (window.localStorage) {
 localStorage.removeItem(key);
 } else {
 //后备方案
 removeCookie(key);
 }
 };