history mod

@@ -136,7 +136,7 @@ const searchHistory = (req, res) => {
     }
 
     _.forEach(history, function(item) {
-        if(item !== 'undefined'){
+        if (item !== 'undefined') {
             let list = {};
 
             list['keyword'] = item;  //eslint-disable-line

@@ -898,9 +898,9 @@ function searchSuggestHistory() {
         query: window.queryString().query
     };
 
-    if($searchKey.attr("alt")){
-        param.query = "";
-        $searchKey.attr("alt",false);
+    if ($searchKey.attr('alt')) {
+        param.query = '';
+        $searchKey.attr('alt', false);
     }
 
     $.getJSON('//search.yohobuy.com/product/search/history?callback=?', param, function(jsonData) {
@@ -922,7 +922,7 @@ function searchSuggestHistory() {
             $('.search-suggest-title .searchDel').click(function() {
                 window.setCookie('_History', '', {domain: '.yohobuy.com'});
                 $(this).closest('.search-suggest-history').hide();
-                $searchKey.attr("alt",true);
+                $searchKey.attr('alt', true);
                 return false;
             });
 
@@ -982,7 +982,7 @@ function searchSuggestRecommend(channel, key) {
  */
 $(function() {
     searchSuggestRecommend();
-    if(location.href.indexOf("www.yohobuy.com") < 0){
+    if (location.href.indexOf('www.yohobuy.com') < 0) {
         searchSuggestHistory();
     }
 });