META-INF.resources.bower_components.globalize.src.date.start-of.js Maven / Gradle / Ivy

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define(function () {

    /**
     * startOf changes the input to the beginning of the given unit.
     *
     * For example, starting at the start of a day, resets hours, minutes
     * seconds and milliseconds to 0. Starting at the month does the same, but
     * also sets the date to 1.
     *
     * Returns the modified date
     */
    return function (date, unit) {
        date = new Date(date.getTime());
        switch (unit) {
            case "year":
                date.setMonth(0);
            /* falls through */
            case "month":
                date.setDate(1);
            /* falls through */
            case "day":
                date.setHours(0);
            /* falls through */
            case "hour":
                date.setMinutes(0);
            /* falls through */
            case "minute":
                date.setSeconds(0);
            /* falls through */
            case "second":
                date.setMilliseconds(0);
        }
        return date;
    };

});