重置
添加type="reset"起作用一定是在里面的

<form class="layui-form" action="">
	<div class="layui-form-item">
	    <div class="layui-input-block">
	      <button type="submit" class="layui-btn" lay-submit="" lay-filter="demo1">立即提交</button>
	      <button type="reset" class="layui-btn layui-btn-primary">重置</button>
	    </div>
	  </div>
</form>