momentjs humanized durations

lazy-moment.js

// Uses moment js to parse human durations
// Author: Guy Hughes
// Date: 2015-08-17
function getPeriod(input) {
    // returns an object {start: xxxx, end: xxxx}
    // WARN: moment() methods modify object by reference
    var start, end;
    switch (input) {
        case "Tomorrow":
            start = moment().add(1,'day');
            end = moment(start);
            break;
        case "Today":
            start = moment();
            end = moment(start);
            break;
        case "Yesterday":
            start = moment().subtract(1,'day');
            end = moment(start);
            break;
        case "Last Week":
            start = moment().subtract(1, 'weeks').startOf("week");
            end = moment(start).endOf("week");
            break;
        case "This Week":
            start = moment().startOf("week");
            end = moment(start).endOf("week");
            break;
        case "Next Week":
            start = moment().add(1, 'weeks').startOf("week");
            end = moment(start).endOf("week");
            break;
        case "Last Month":
            start = moment().subtract(1,'months').startOf("month")
            end = moment(start).endOf('month');
            break;
        case "This Month":
            start = moment().startOf("month")
            end = moment(start).endOf('month');
            break;
        case "This Year":
            start = moment().startOf("year");
            end = moment(start).endOf("year");
            break;
        default:
            console.log("getPeriod: case statement fail. input=" + input);
            return {};
            break;
    }
    // return the dates in ISO format
    return { start: start.format("YYYY/MM/DD"), end: end.format("YYYY/MM/DD") }
}