A JavaScript Mock Date object that can be used to change when "now" is.
npm install mockdate
MockDate has been tested in Node, IE9+, Chrome, Firefox, and Opera.
// CommonJS
var MockDate = require('mockdate');// AMD
require(['MockDate'], function(MockDate) { ... });// Script Tag
var MockDate = window.MockDate;MockDate.set(date, [timezoneOffset])
date: Object
The Date to be returned when no parameters are passed to new Date(). Supports any object that has a .valueOf method that returns a value that can be passed to new Date().
date: String
The string representation of the Date to be returned when no parameters are passed to new Date().
date: Number
The millisecond representation of the Date to be returned when no parameters are passed to new Date().
timezoneOffset: Number
The value that should be returned by new Date().getTimezoneOffset()
MockDate.reset();Will restore the original Date object back to the native implementation.
MockDate.set('1/1/2000');
new Date().toString() // "Sat Jan 01 2000 00:00:00 GMT-0600 (CST)"
MockDate.set('1/1/2000', 120);
new Date().getTimezoneOffset() // 120
MockDate.set(new Date('2/2/2000'));
new Date().toString() // "Wed Feb 02 2000 00:00:00 GMT-0600 (CST)"
MockDate.set(moment('3/3/2000')); // using momentjs
new Date().toString() // "Fri Mar 03 2000 00:00:00 GMT-0600 (CST)"
MockDate.reset();
new Date().toString() // "Mon Mar 17 2014 18:08:44 GMT-0500 (CDT)"
new Date().getTimezoneOffset() // 360npm test