<button class="layui-btn" lay-submit lay-filter="formDemo" id="layui-btn" type="submit">立即提交</button>
使用layer/layui弹出层插件,type="submit"时,弹出层失效,改为type="button"时正常弹出;
layer/layui弹出层插件bug
原文：http://www.cnblogs.com/seven-ahz/p/6671233.html
