最近经常被日期缠绕着,久久不能释怀!
什么标准时间,日期格式化,当前日期的近一周,前一天、后一天日期啊,都让我给碰到了。
唉,我也够倒霉的,差点绕晕了。下面我就总结一下,防止以后忘了!!!
当前日期时间:
console.log(new Date()) //当前日期时间
//Mon Dec 16 2019 13:56:48 GMT+0800 (中国标准时间)
格式化日期:
//日期格式化 将标准日期转为 yyyy-mm-dd
dateFormat(time) {
var date = new Date(time);
var year = date.getFullYear();
var month =
date.getMonth() + 1 < 10
? "0" + (date.getMonth() + 1)
: date.getMonth() + 1;
var day = date.getDate() < 10 ? "0" + date.getDate() : date.getDate();
var hours =
date.getHours() < 10 ? "0" + date.getHours() : date.getHours();
var minutes =
date.getMinutes() < 10 ? "0" + date.getMinutes() : date.getMinutes();
var seconds =
date.getSeconds() < 10 ? "0" + date.getSeconds() : date.getSeconds();
// 拼接
return year + "-" + month + "-" + day;
}
当前日期的前一天:
GetPrevDay(str) {
var year = str.substring(0, 4);
var month = str.substring(5, 7);
var day = str.substring(8, 10);
var today = new Date(year, month - 1, day);
var yesterSeconds = today.getTime() - 1000 * 60 * 60 * 24 ;//前几天就可以乘几
var yesterday = new Date();
yesterday.setTime(yesterSeconds);
var strYear = yesterday.getFullYear();
var strDay = yesterday.getDate();
var strMonth = yesterday.getMonth() + 1;
if (strMonth < 10) {
strMonth = "0" + strMonth;
}
if (strDay < 10) {
strDay = "0" + strDay;
}
return strYear + "-" + strMonth + "-" + strDay;
}
当前日期的后一天:
getNextDay(str){
str = new Date(str);
str = +str + 1000*60*60*24; //后几天就乘几
str = new Date(str);
var y=str.getFullYear();
var m= str.getMonth()+1;
var d= str.getDate() ;
if(m<10) {
m="0"+m;
}
if(d<10) {
d="0"+d;
}
return y+'-'+m+'-'+d;
}
展示当前日期的后七天日期:
funDate(date, aa) {
let date1;
date1 = new Date(this.dateFormat(date)); //dateFormat方法前面已有,不多赘述
let time1 = this.dateFormat(date1); //time1表示当前时间
let date2 = new Date(date1);
date2.setDate(date1.getDate() + aa);
let time2 = this.dateFormat(date2);
date = "";
return time2;
}
展现当前日期的前三天和后三天:
funDate(date, aa) {
let date1;
date1 = new Date(this.GetPrevDay(this.dateFormat(date)));
let time1 = this.dateFormat(date1); //time1表示当前时间
let date2 = new Date(date1);
date2.setDate(date1.getDate() + aa);
let time2 = this.dateFormat(date2);
date = "";
return time2;
}