摘要: function Countdown(seconds) { this._seconds = seconds; } Countdown.prototype._step = function() { console.log(this._seconds); if (this._seconds > 0) { 阅读全文
posted @ 2018-11-20 12:13 吾生有涯,而知无涯! 阅读(129) 评论(0) 推荐(0) 编辑