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Fancy date ranges for Moment.js
CoffeeScript JavaScript

README.md

moment-range

Fancy date ranges for Moment.js.

Examples

Create

Create a date range:

var start = new Date(2012, 0, 15);
var end   = new Date(2012, 4, 23);
var range = moment().range(start, end);

You can also create a date range with moment objects:

var start = moment("2011-04-15", "YYYY-MM-DD");
var end   = moment("2011-11-27", "YYYY-MM-DD");
var range = moment().range(start, end);

Contains / Within / Overlaps / Intersect / Add / Subtract

Check to see if your range contains a date/moment:

var start  = new Date(2012, 4, 1);
var end    = new Date(2012, 4, 23);
var lol    = new Date(2012, 4, 15);
var wat    = new Date(2012, 4, 27);
var range  = moment().range(start, end);
var range2 = moment().range(lol, wat);

range.contains(lol); // true
range.contains(wat); // false

A optional second parameter indicates if the end of the range should be excluded when testing for inclusion

range.contains(end) // true
range.contains(end, false) // true
range.contains(end, true) // false

Find out if your moment falls within a date range:

var start = new Date(2012, 4, 1);
var end   = new Date(2012, 4, 23);
var when  = moment("2012-05-10", "YYYY-MM-DD");
var range = moment().range(start, end);

when.within(range); // true

Does it overlap another range?

range.overlaps(range2); // true

What are the intersecting ranges?

range.intersect(range2); // [moment().range(lol, end)]

Add/combine/merge overlapping ranges.

range.add(range2); // [moment().range(start, wat)]

var range3 = moment.range(new Date(2012, 3, 1), new Date(2012, 3, 15);
range.add(range3); // [null]

Subtracting one range from another.

range.subtract(range2); // [moment().range(start, lol)]

Iterate

Iterate over your date range by an amount of time or another range:

var start = new Date(2012, 2, 1);
var two   = new Date(2012, 2, 2);
var end   = new Date(2012, 2, 5);
var range1 = moment().range(start, end);
var range2 = moment().range(start, two); // One day
var acc = [];

range1.by('days', function(moment) {
  // Do something with `moment`
});

Any of the units accepted by moment.js' add method may be used.

You can also iterate by another range:

range1.by(range2, function(moment) {
  // Do something with `moment`
  acc.push(moment);
});

acc.length == 5 // true

Iteration also supports excluding the end value of the range by setting the last parameter to true.

acc2 = [];
range1.by('d', function (moment) {
  acc2.push(moment)
}, true);
acc2.length == 4 // true

Compare

Compare range lengths or add them together with simple math:

var r_1 = moment().range(new Date(2011, 2, 5), new Date(2011, 3, 15));
var r_2 = moment().range(new Date(1995, 0, 1), new Date(1995, 12, 25));

r_2 > r_1 // true

r_1 + r_2 // duration of both ranges in milliseconds

Math.abs(r_1 - r_2); // difference of ranges in milliseconds

Equality

Check if two ranges are the same, i.e. their starts and ends are the same:

var r_1 = moment().range(new Date(2011, 2, 5), new Date(2011, 3, 15));
var r_2 = moment().range(new Date(2011, 2, 5), new Date(2011, 3, 15));
var r_3 = moment().range(new Date(2011, 3, 5), new Date(2011, 6, 15));

r_1.isSame(r_2); // true
r_2.isSame(r_3); // false

Difference

The difference of the entire range given various units.

Any of the units accepted by moment.js' add method may be used.

var start = new Date(2011, 2, 5);
var end   = new Date(2011, 5, 5);
var dr    = moment.range(start, end);

dr.diff('months'); // 3
dr.diff('days'); // 92
dr.diff(); // 7945200000

Conversion

toDate

var start = new Date(2011, 2, 5);
var end   = new Date(2011, 5, 5);
var dr    = moment.range(start, end);

dr.toDate(); // [new Date(2011, 2, 5), new Date(2011, 5, 5)]

Center

Calculate the center of a range

var start = new Date(2011, 2, 5);
var end   = new Date(2011, 3, 5);
var dr    = moment.range(start, end);

dr.center(); // 1300622400000

Clone

Deep clone a range

var start = new Date(2011, 2, 5);
var end   = new Date(2011, 3, 5);
var dr    = moment.range(start, end);

var dr2 = dr.clone();
dr2.start.add(2, 'days');

dr2.start.toDate() === dr.start.toDate() // false

Installation

moment-range works in both the browser and node.js.

Browser

Simply include moment-range after moment.js:

<script src="/javascripts/moment-range.js"></script>

Thanks to the fine people at cdnjs, you can link to moment-range from the cdnjs servers.

NPM

Install via npm:

npm install moment-range

Or put it in your package.json:

{ "moment-range": "~1" }

Bower

bower install moment-range

Running Tests

Clone this bad boy:

git clone https://git@github.com/gf3/moment-range.git

Install the dependencies:

npm install

Do all the things!

npm build
npm test

License

moment-range is UNLICENSED.

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