A date formatting function implemented by JavaScript

Since it is often necessary to format dates in work, unlike the backend, there are convenient methods to call, and you can define a format method in the date object prototype, see as follows:

The code copy is as follows:

// Add formatting method for date and time prototype

Date.prototype.Format = function (formatStr) {

var str = formatStr;

var Week = ['day', 'one', 'two', 'three', 'four', 'five', 'six'];

str = str.replace(/yyyy|YYYY/, this.getFullYear());

str = str.replace(/yy|YY/, (this.getYear() % 100) > 9 ? (this.getYear() % 100).toString() : '0' + (this.getYear() % 100));

var month = this.getMonth() + 1;

str = str.replace(/MM/, month > 9 ? month.toString() : '0' + month);

str = str.replace(/M/g, month);

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;

}

It is relatively simple to call, for example:

The code copy is as follows:

var d = new Date();

var str = d.Format("yyyy-MM-dd hh:mm:ss");

console.log(str);