小程序循环传入多个formId

<form @submit="submit" report-submit="true">
            <button formType="submit" hover-class="none" data-flag="5">
                <button formType="submit" hover-class="none" data-flag="4">
                    <button formType="submit" hover-class="none" data-flag="3">
                        <button formType="submit" hover-class="none" data-flag="2">
                            <button formType="submit" hover-class="none" data-flag="1">
                                <button formType="submit" hover-class="none" data-flag="0" class="mybtn upload">打卡</button>
                            </button>
                        </button>
                    </button>
                </button>
            </button>
        </form>

export default {
    data() {
        return {
                    formId: []
        };
    },
methods: {
submit: function(e) {
            var index = e.detail.target.dataset.flag;
            this.formId.push(e.detail.formId);
            console.log(this.formId);
            if (index == 5) {
                this.handleUpload();  //这个接口里面把formid的数组传回后台
            }
        },
}
}