layui表单提交数据_vue表单值无变化不让提交

<form class="layui-form" action="">

    <div class="layui-form-item">
        <div class="layui-input-block">
            <button class="layui-btn" lay-submit lay-filter="formDemo">立即提交</button>
        </div>
    </div>
 </form>
<script>
    //Demo
    layui.use('form', function(){
        var form = layui.form;
        //监听提交
        form.on('submit(formDemo)', function(data){
            $.post(
                "getArrange",
                $(data.form).serialize(),
                function (obj) {
                    if (obj.code == 1) {
                        layer.msg(obj.msg, {time: 1500}, function () {
                            window.location.href = 'arrange_remove';
                        });
                    }
                    else {