更新 'login_html.js'

login_html.js

@@ -74,7 +74,8 @@ z-index:999999;">
  
  
  
-    $('input[placeholder="请输入内容"]').attr('id','search').attr('autocomplete','off').focus(function(){
+    $('input[placeholder="请输入内容"]').attr('id','search').attr('autocomplete','off');
+      $('#search').focus(function(){
         $(this).attr('placeholder','')
     }).blur(function () {
         $(this).attr('placeholder','请输入内容')