Extended JavaScript Date method implementation code (prototype)_javascript skills

Recently, some functions of the project are being reconstructed, and the front-end has basically overturned the original design, and there are new solutions based on the accumulation in the previous six months. I have been refactoring and designing the front end these days and have encountered some problems. Because the main purpose of this module is to control time, it operates a large number of js Date objects, but there are too few native js Date methods, which is too inconvenient to operate. So I plan to extend the prototype of Date.

I have been engaged in C# development for a long time, and C# has influenced my thinking. The operation of DateTime in C# is very convenient, so I used it to extend the Date of js.

Copy code The code is as follows:

//Add the specified number of milliseconds to this instance Value on
Date.prototype.addMilliseconds = function (value) {
var millisecond = this.getMilliseconds();
this.setMilliseconds(millisecond value);
return this;
};
//Add the specified number of seconds to the value of this instance
Date.prototype.addSeconds = function (value) {
var second = this.getSeconds();
this.setSeconds( second value);
return this;
};
//Add the specified number of minutes to the value of this instance
Date.prototype.addMinutes = function (value) {
var minute = this.addMinutes();
this.setMinutes(minute value);
return this;
};
//Add the specified number of hours to the value of this instance
Date.prototype.addHours = function (value) {
var hour = this.getHours();
this.setHours(hour value);
return this;
};
// Adds the specified number of days to the value of this instance
Date.prototype.addDays = function (value) {
var date = this.getDate();
this.setDate(date value);
return this;
};
//Add the specified number of weeks to the value of this instance
Date.prototype.addWeeks = function (value) {
return this.addDays(value * 7);
};
//Add the specified number of months to the value of this instance
Date.prototype.addMonths = function (value) {
var month = this.getMonth() ;
this.setMonth(month value);
return this;
};
//Add the specified number of years to the value of this instance
Date.prototype.addYears = function (value) {
var year = this.getFullYear();
this.setFullYear(year value);
return this;
};
//Format date display format=" yyyy-MM-dd hh:mm:ss";
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;
}

I think there is no need to say more about how to use it, it is:

Copy code The code is as follows:

var date = new Date();
date.addHours(1);
date .addYears(2);
document.write(date.format('yyyy-MM-dd hh:mm:ss'));

I hope this extension method can help everyone.