<a href="javascript:;" id="submit-btn" class="submit-btn" title="保存"><span><i class="icon icon-s-save"></i>保存</span></a>
而不是我之前写的：#
<a href="#" id="submit-btn" class="submit-btn" title="保存"><span><i class="icon icon-s-save"></i>保存</span></a>
也不是：空
<a href="" id="submit-btn" class="submit-btn" title="保存"><span><i class="icon icon-s-save"></i>保存</span></a>