Date.prototype.Format = function(fmt) { //author: meizz var o = { "M+" : this.getMonth() + 1, //月份 "d+" : this.getDate(), //日 "h+" : this.getHours(), //小时 "m+" : this.getMinutes(), //分 "s+" : this.getSeconds(), //秒 "q+" : Math.floor((this.getMonth() + 3) / 3), //季度 "S" : this.getMilliseconds() //毫秒 }; if (/(y+)/.test(fmt)) fmt = fmt.replace(RegExp.$1, (this.getFullYear() + "").substr(4 - RegExp.$1.length)); for (var k in o) if (new RegExp("(" + k + ")").test(fmt)) fmt = fmt.replace(RegExp.$1, (RegExp.$1.length == 1) ? (o[k]) : (("00" + o[k]).substr(("" + o[k]).length))); return fmt; } Date.prototype.addDays = function(d) { this.setDate(this.getDate() + d); }; Date.prototype.addWeeks = function(w) { this.addDays(w * 7); }; Date.prototype.addMonths= function(m) { var d = this.getDate(); this.setMonth(this.getMonth() + m); if (this.getDate() < d) this.setDate(0); }; Date.prototype.addYears = function(y) { var m = this.getMonth(); this.setFullYear(this.getFullYear() + y); if (m < this.getMonth()) { this.setDate(0); } }; var now = new Date(); now.addDays(1);//加减日期操作 alert(now.Format("yyyy-MM-dd")); posted @ 2009-02-27 22:15 jacky song 阅读(184) 评论(0) 编辑 收藏 网摘 所属分类: javascript