小编给大家分享一下JavaScript如何实现时间日期格式转换,希望大家阅读完这篇文章之后都有所收获,下面让我们一起去探讨吧!
Date.prototype.format = function(formatStr) {
var str = formatStr;
var Week = ["日", "一", "二", "三", "四", "五", "六"];
str = str.replace(/yyyy|YYYY/, this.getFullYear());
str = str.replace(
/yy|YY/,
this.getYear() % 100 > 9
? (this.getYear() % 100).toString()
: "0" + (this.getYear() % 100)
);
str = str.replace(
/MM/,
this.getMonth() + 1 > 9
? (this.getMonth() + 1).toString()
: "0" + (this.getMonth() + 1)
);
str = str.replace(/M/g, this.getMonth() + 1);
str = str.replace(/w|W/g, Week[this.getDay()]);
str = str.replace(
/dd|DD/,
this.getDate() > 9 ? this.getDate().toString() : "0" + this.getDate()
);
str = str.replace(/d|D/g, this.getDate());
str = str.replace(
/hh|HH/,
this.getHours() > 9 ? this.getHours().toString() : "0" + this.getHours()
);
str = str.replace(/h|H/g, this.getHours());
str = str.replace(
/mm/,
this.getMinutes() > 9
? this.getMinutes().toString()
: "0" + this.getMinutes()
);
str = str.replace(/m/g, this.getMinutes());
str = str.replace(
/ss|SS/,
this.getSeconds() > 9
? this.getSeconds().toString()
: "0" + this.getSeconds()
);
str = str.replace(/s|S/g, this.getSeconds());
return str;
};
// 或
Date.prototype.format = function(format) {
var o = {
"M+": this.getMonth() + 1, //month
"d+": this.getDate(), //day
"h+": this.getHours(), //hour
"m+": this.getMinutes(), //minute
"s+": this.getSeconds(), //second
"q+": Math.floor((this.getMonth() + 3) / 3), //quarter
S: this.getMilliseconds() //millisecond
};
if (/(y+)/.test(format))
format = format.replace(
RegExp.$1,
(this.getFullYear() + "").substr(4 - RegExp.$1.length)
);
for (var k in o) {
if (new RegExp("(" + k + ")").test(format))
format = format.replace(
RegExp.$1,
RegExp.$1.length == 1 ? o[k] : ("00" + o[k]).substr(("" + o[k]).length)
);
}
return format;
};
alert(new Date().format("yyyy-MM-dd hh:mm:ss"));
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