nenjiru/dateset.js

## dateset.js
////////////////////////////////////////////////////////////////////////////////
// Dateset
// 指定期間の日付／曜日の出力など
// Copyright 2010, Minoru Nakanou
// Licensed under the MIT licenses.
// http://www.opensource.org/licenses/mit-license.html
////////////////////////////////////////////////////////////////////////////////
(function() {
    /**
     * @private
     * 日付フォーマット初期値
     */
    var _template = "YEAR/MONTH/DATE/DAY";

    /**
     * @private
     * 曜日フォーマット初期値
     */
    var _format = ["Sunday","Monday","Tuesday","Wednesday","Thursday","Friday","Saturday"];

    /**
     * 日付処理クラス
     *
     * @param {String} template	日付フォーマット
     * @param {Array} format	曜日フォーマット
     * @param {Boolean} zeroPadding	ゼロパディング
     */
    window.Dateset = function(template, format, zeroPadding) {
        this.zeroPadding = (zeroPadding == undefined) ? true : zeroPadding;
        this.template = template || _template;
        this.format = format || _format;
    }

    /**
     * Dateオブジェクトをフォーマット出力
     *
     * @param {Date} date	Dateオブジェクト
     */
    Dateset.prototype.print = function(date) {
        var y = date.getFullYear();
        var m = date.getMonth() + 1;
        var d = date.getDate();
        var w = this.format[date.getDay()];

        if (this.zeroPadding) {
            if (m < 10) m = "0"+ m;
            if (d < 10) d = "0"+ d;
        }

        return this.template
            .replace("YEAR", y)
            .replace("MONTH", m)
            .replace("DATE", d)
            .replace("DAY", w);
    }

    /**
     * 今日をフォーマットにそって出力
     *
     * @param {Number} target	正数でN日後、負数でN日前
     */
    Dateset.prototype.today = function(target) {
        var current = new Date();

        if (target) {
            current = new Date(
                current.getFullYear(),
                current.getMonth(),
                current.getDate() + target
            );
        }

        return this.print(current);
    }

    /**
     * "/"区切りの日付フォーマットを Dateオブジェクトに変換
     *
     * @param {String} date	"2010/05/01"
     * @return {Date}
     */
    Dateset.prototype.toDate = function(date) {
        var adate = date.split("/");
        return new Date(adate[0], adate[1]-1, adate[2], 00, 00, 00);
    }

    /**
     * 指定期間の日数
     *
     * @param {String} start	開始日 "2010/05/01"
     * @param {String} finish	終了日 "2010/05/31"
     * @param {Boolean} diff	当日を含めるか
     * @return {Number} 日数
     */
    Dateset.prototype.span = function(start, finish, diff) {
        var start = this.toDate(start);
        var finish = this.toDate(finish);
        var diff = (diff == undefined) ? true : diff;
        var span = (finish.getTime() - start.getTime()) / 86400000;

        if (diff) {
            if (span < 0) --span;
            else ++span;
        }

        return span;
    }

    /**
     * 指定日から経過日
     *
     * @param {String} start	開始日 "2010/05/01"
     * @param {Number} target	終了日 正数でN日後、負数でN日前
     * @return {String} 日付
     */
    Dateset.prototype.after = function(start, target) {
        var s = this.toDate(start);
        var after = new Date(s.getFullYear(), s.getMonth(), s.getDate()+target);
        return this.print(after);
    }

    /**
     * 日付出力
     * リストの終了を指定する第2引数は String|Number どちらでも可能
     *
     * @param {String} start	開始日 "2010/05/01"
     * @param {String} finish	終了日 "2010/05/31"
     * @return {Array} 整形日付の配列
     */
    Dateset.prototype.list = function(start, finish) {
        var list = []
        var current = this.toDate(start);

        if (typeof finish == "string") finish = this.span(start, finish, true);

        for (var i=0; i<finish; i++) {
            list.push(
                this.print(current)
            );

            current = new Date(
                current.getFullYear(),
                current.getMonth(),
                current.getDate() + 1
            );
        }

        return list;
    }

})();

## example.html
<!DOCTYPE html>
<html lang="ja">
<head>
<meta charset="utf-8">
<title>Dateset</title>
<script type="text/javascript" src="./dateset.js"></script>
</head>
<body>
<script type="text/javascript">
	var date = new Dateset();
	var today = date.today();
	var yesterday = date.today(-1);
	var tomorrow = date.today(1);

	console.log("今日:", today);
	console.log("昨日:", yesterday);
	console.log("明日:", tomorrow);
	console.log("Date.parse:"+ yesterday, Date.parse(yesterday));

	date.format = ["日", "月", "火", "水", "木", "金", "土"];
	date.zeroPadding = false;
	console.log("フォーマット変更:", date.format);

	today = date.today();
	yesterday = date.today(-1);
	tomorrow = date.today(1);

	console.log("今日:", today);
	console.log("昨日:", yesterday);
	console.log("明日:", tomorrow);

	var toDate = date.toDate(yesterday);
	console.log("toDate:", toDate.getTime());

	var span = date.span("2010/05/01", "2010/05/15");
	console.log("期間:", span);

	var list = date.list("2010/05/01", "2010/05/10");
	console.log("リスト:", list);
</script>
</body>
</html>
	////////////////////////////////////////////////////////////////////////////////
	// Dateset
	// 指定期間の日付／曜日の出力など
	// Copyright 2010, Minoru Nakanou
	// Licensed under the MIT licenses.
	// http://www.opensource.org/licenses/mit-license.html
	////////////////////////////////////////////////////////////////////////////////
	(function() {
	/**
	* @private
	* 日付フォーマット初期値
	*/
	var _template = "YEAR/MONTH/DATE/DAY";

	/**
	* @private
	* 曜日フォーマット初期値
	*/
	var _format = ["Sunday","Monday","Tuesday","Wednesday","Thursday","Friday","Saturday"];

	/**
	* 日付処理クラス
	*
	* @param {String} template 日付フォーマット
	* @param {Array} format 曜日フォーマット
	* @param {Boolean} zeroPadding ゼロパディング
	*/
	window.Dateset = function(template, format, zeroPadding) {
	this.zeroPadding = (zeroPadding == undefined) ? true : zeroPadding;
	this.template = template \|\| _template;
	this.format = format \|\| _format;
	}

	/**
	* Dateオブジェクトをフォーマット出力
	*
	* @param {Date} date Dateオブジェクト
	*/
	Dateset.prototype.print = function(date) {
	var y = date.getFullYear();
	var m = date.getMonth() + 1;
	var d = date.getDate();
	var w = this.format[date.getDay()];

	if (this.zeroPadding) {
	if (m < 10) m = "0"+ m;
	if (d < 10) d = "0"+ d;
	}

	return this.template
	.replace("YEAR", y)
	.replace("MONTH", m)
	.replace("DATE", d)
	.replace("DAY", w);
	}

	/**
	* 今日をフォーマットにそって出力
	*
	* @param {Number} target 正数でN日後、負数でN日前
	*/
	Dateset.prototype.today = function(target) {
	var current = new Date();

	if (target) {
	current = new Date(
	current.getFullYear(),
	current.getMonth(),
	current.getDate() + target
	);
	}

	return this.print(current);
	}

	/**
	* "/"区切りの日付フォーマットを Dateオブジェクトに変換
	*
	* @param {String} date "2010/05/01"
	* @return {Date}
	*/
	Dateset.prototype.toDate = function(date) {
	var adate = date.split("/");
	return new Date(adate[0], adate[1]-1, adate[2], 00, 00, 00);
	}

	/**
	* 指定期間の日数
	*
	* @param {String} start 開始日 "2010/05/01"
	* @param {String} finish 終了日 "2010/05/31"
	* @param {Boolean} diff 当日を含めるか
	* @return {Number} 日数
	*/
	Dateset.prototype.span = function(start, finish, diff) {
	var start = this.toDate(start);
	var finish = this.toDate(finish);
	var diff = (diff == undefined) ? true : diff;
	var span = (finish.getTime() - start.getTime()) / 86400000;

	if (diff) {
	if (span < 0) --span;
	else ++span;
	}

	return span;
	}

	/**
	* 指定日から経過日
	*
	* @param {String} start 開始日 "2010/05/01"
	* @param {Number} target 終了日正数でN日後、負数でN日前
	* @return {String} 日付
	*/
	Dateset.prototype.after = function(start, target) {
	var s = this.toDate(start);
	var after = new Date(s.getFullYear(), s.getMonth(), s.getDate()+target);
	return this.print(after);
	}

	/**
	* 日付出力
	* リストの終了を指定する第2引数は String\|Number どちらでも可能
	*
	* @param {String} start 開始日 "2010/05/01"
	* @param {String} finish 終了日 "2010/05/31"
	* @return {Array} 整形日付の配列
	*/
	Dateset.prototype.list = function(start, finish) {
	var list = []
	var current = this.toDate(start);

	if (typeof finish == "string") finish = this.span(start, finish, true);

	for (var i=0; i<finish; i++) {
	list.push(
	this.print(current)
	);

	current = new Date(
	current.getFullYear(),
	current.getMonth(),
	current.getDate() + 1
	);
	}

	return list;
	}

	})();
	<!DOCTYPE html>
	<html lang="ja">
	<head>
	<meta charset="utf-8">
	<title>Dateset</title>
	<script type="text/javascript" src="./dateset.js"></script>
	</head>
	<body>
	<script type="text/javascript">
	var date = new Dateset();
	var today = date.today();
	var yesterday = date.today(-1);
	var tomorrow = date.today(1);

	console.log("今日:", today);
	console.log("昨日:", yesterday);
	console.log("明日:", tomorrow);
	console.log("Date.parse:"+ yesterday, Date.parse(yesterday));

	date.format = ["日", "月", "火", "水", "木", "金", "土"];
	date.zeroPadding = false;
	console.log("フォーマット変更:", date.format);

	today = date.today();
	yesterday = date.today(-1);
	tomorrow = date.today(1);

	console.log("今日:", today);
	console.log("昨日:", yesterday);
	console.log("明日:", tomorrow);

	var toDate = date.toDate(yesterday);
	console.log("toDate:", toDate.getTime());

	var span = date.span("2010/05/01", "2010/05/15");
	console.log("期間:", span);

	var list = date.list("2010/05/01", "2010/05/10");
	console.log("リスト:", list);
	</script>
	</body>
	</html>