输入为空不提交表单

app/views/layouts/_logined_header.html.erb

@@ -33,12 +33,21 @@
 
       $(function(){
           $("#navHomepageSearchInput").keypress(function(e){
-              if (e.keyCode == '13') {
+              var name = $.trim($('#navHomepageSearchInput').val());
+              if (e.keyCode == '13' && name != "" &&  name.length != 0) {
                   $('#type').val($('input[type=radio]:checked').val());
                   $(this).parent().submit();
               }
           })
       });
+
+      function search_in_header(){
+          var name = $.trim($('#navHomepageSearchInput').val());
+          if (name != "" &&  name.length != 0) {
+              $('#type').val($('input[type=radio]:checked').val());
+              $(this).parent().submit();
+          }
+      }
   </script>
   <div class="fl" id="navHomepageSearch">
     <!--<form class="navHomepageSearchBox">-->
@@ -46,9 +55,10 @@
 
     <%= form_tag({controller: :welcome, action: :search },:class=>'navHomepageSearchBox', method: :get) do %>
       <input type="text" name="q" value="<%= name.nil? ? "" : name%>" id="navHomepageSearchInput" class="navHomepageSearchInput" placeholder="请输入关键词进行搜索"/>
-        <input type="hidden" name="search_type" id="type" value=""/>
-        <a href="javascript:void(0);" class="homepageSearchIcon" onclick="$('#type').val($('input[type=radio]:checked').val());$(this).parent().submit();"></a>
-     <% end %>
+      <input type="hidden" name="search_type" id="type" value=""/>
+      <input type="text" class="none"/>
+      <a href="javascript:void(0);" class="homepageSearchIcon" onclick="search_in_header();"></a>
+    <% end %>
     <div class="navSearchTypeBox" id="navHomepageSearchType">
       <div class="fl mr15 mt8">
         <input type="radio"  value="courses" name="search_type" checked/>

app/views/layouts/_unlogin_header.html.erb

@@ -33,22 +33,40 @@
 
      $(function(){
          $("#navHomepageSearchInput").keypress(function(e){
-             if (e.keyCode == '13') {
+             var name = $.trim($('#navHomepageSearchInput').val());
+             if (e.keyCode == '13' && name != "" &&  name.length != 0) {
                  $('#type').val($('input[type=radio]:checked').val());
                  $(this).parent().submit();
              }
          })
      });
+
+     function search_in_header(){
+         var name = $.trim($('#navHomepageSearchInput').val());
+         if (name != "" &&  name.length != 0) {
+             $('#type').val($('input[type=radio]:checked').val());
+             $(this).parent().submit();
+         }
+     }
+
+     //搜索相关
+     $("#navHomepageSearch").mouseover(function(){
+         $("#navHomepageSearchType").show();
+     }).mouseout(function(){
+         $("#navHomepageSearchType").hide();
+     });
  </script>
   <div class="fl" id="navHomepageSearch">
     <!--<form class="navHomepageSearchBox">-->
     <% name = name%>
 
     <%= form_tag({controller: :welcome, action: :search },:class=>'navHomepageSearchBox', method: :get) do %>
-      <input type="text" name="q" value="<%= name.nil? ? "" : name%>" id="navHomepageSearchInput"  class="navHomepageSearchInput" placeholder="请输入关键词进行搜索" />
-      <input type="hidden" name="search_type" id="type" value=""/>
-      <a href="javascript:void(0);" class="homepageSearchIcon" onclick="$('#type').val($('input[type=radio]:checked').val());$(this).parent().submit();"></a>
+        <input type="text" name="q" value="<%= name.nil? ? "" : name%>" id="navHomepageSearchInput" class="navHomepageSearchInput" placeholder="请输入关键词进行搜索"/>
+        <input type="hidden" name="search_type" id="type" value=""/>
+        <input type="text" class="none"/>
+        <a href="javascript:void(0);" class="homepageSearchIcon" onclick="search_in_header();"></a>
     <% end %>
+
     <div class="navSearchTypeBox" id="navHomepageSearchType">
       <div class="fl mr15 mt8">
         <input type="radio" value="courses" name="search_type"  checked/>
@@ -75,13 +93,3 @@
     <a href="<%= signin_path(:login=>false) %>" class="c_white db">注册</a>
   </div>
 </div>
-
-<script type="text/javascript">
-    //搜索相关
-    $("#navHomepageSearch").mouseover(function(){
-        $("#navHomepageSearchType").show();
-    }).mouseout(function(){
-        $("#navHomepageSearchType").hide();
-    });
-
-</script>