// 字段验证允许为空
                layui.form.verify({
                    phone: [/(^$)|^1\d{10}$/, "请输入正确的手机号"],
                    email: [/(^$)|^([a-zA-Z0-9_\.\-])+\@(([a-zA-Z0-9\-])+\.)+([a-zA-Z0-9]{2,4})+$/, "邮箱格式不正确"],
                    url: [/(^$)|(^#)|(^http(s*):\/\/[^\s]+\.[^\s]+)/, "链接格式不正确"],
                    number: [/(^$)|^\d+$/,'只能填写数字'],
                    date: [/(^$)|^(\d{4})[-\/](\d{1}|0\d{1}|1[0-2])([-\/](\d{1}|0\d