uni-zhihuikuangshan/common/time.js

Date.prototype.format = function(fmt) {
	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;
}

// import time from "@/common/time.js"

// console.log(new Date().format("yyyy-MM-dd"))


export const getNextDate = (date, day)=> {
	var dd = new Date(date);
	dd.setDate(dd.getDate() + day);
	var y = dd.getFullYear();
	var m = dd.getMonth() + 1 < 10 ? "0" + (dd.getMonth() + 1) : dd.getMonth() + 1;
	var d = dd.getDate() < 10 ? "0" + dd.getDate() : dd.getDate();
	return y + "-" + m + "-" + d;
}

// getNextDate("2018-09-27",10)