Contagem regressiva

[Luuuizmb]

Olá,

 

Eu tenho este código de contagem regressiva JS:

(function($) {    $.fn.countdown = function(options, callback) {        //custom 'this' selector        thisEl = $(this);        //array of custom settings        var settings = {            'date': null,            'format': null        };        //append the settings array to options        if(options) {            $.extend(settings, options);        }        //main countdown function        function countdown_proc() {            eventDate = Date.parse(settings['date']) / 1000;            currentDate = Math.floor($.now() / 1000);            if(eventDate <= currentDate) {                callback.call(this);                clearInterval(interval);            }            seconds = eventDate - currentDate;            days = Math.floor(seconds / (60 * 60 * 24)); //calculate the number of days            seconds -= days * 60 * 60 * 24; //update the seconds variable with no. of days removed            hours = Math.floor(seconds / (60 * 60));            seconds -= hours * 60 * 60; //update the seconds variable with no. of hours removed            minutes = Math.floor(seconds / 60);            seconds -= minutes * 60; //update the seconds variable with no. of minutes removed            //conditional Ss            if (days == 1) { thisEl.find(".timeRefDays").text("day"); } else { thisEl.find(".timeRefDays").text("days"); }            if (hours == 1) { thisEl.find(".timeRefHours").text("hour"); } else { thisEl.find(".timeRefHours").text("hours"); }            if (minutes == 1) { thisEl.find(".timeRefMinutes").text("minute"); } else { thisEl.find(".timeRefMinutes").text("minutes"); }            if (seconds == 1) { thisEl.find(".timeRefSeconds").text("second"); } else { thisEl.find(".timeRefSeconds").text("seconds"); }            //logic for the two_digits ON setting            if(settings['format'] == "on") {                days = (String(days).length >= 2) ? days : "0" + days;                hours = (String(hours).length >= 2) ? hours : "0" + hours;                minutes = (String(minutes).length >= 2) ? minutes : "0" + minutes;                seconds = (String(seconds).length >= 2) ? seconds : "0" + seconds;            }            //update the countdown's html values.            if(!isNaN(eventDate)) {                thisEl.find(".days").text(days);                thisEl.find(".hours").text(hours);                thisEl.find(".minutes").text(minutes);                thisEl.find(".seconds").text(seconds);            } else {                alert("Invalid date. Here's an example: 12 Tuesday 2012 17:30:00");                clearInterval(interval);            }        }        //run the function        countdown_proc();        //loop the function        interval = setInterval(countdown_proc, 1000);    }}) (jQuery); 

 

O problema é que não sei onde altero para a minha data desejada. Quero que comece a contar até chegar no dia 25 de FEV de 2015.

Podem me ajudar? Obrigado.

[DiF]

Olá, não sei qual é o erro e nem vou procurar entender seu código sem comentários explicativos e etc..

Mas posso recomendar que você altere ele para um plugin jQuery melhor, mais fácil e que possui documentação para estuda-lo

 

http://keith-wood.name/countdown.html

http://hilios.github.io/jQuery.countdown/

 

esses dois são os que eu mais uso. e são bem fáceis de manipular.

[Luuuizmb]

O problema é que não entendo nada. Observe este código:

/* http://keith-wood.name/countdown.html   Countdown for jQuery v1.5.4.   Written by Keith Wood (kbwood{at}iinet.com.au) January 2008.   Dual licensed under the GPL (http://dev.jquery.com/browser/trunk/jquery/GPL-LICENSE.txt) and   MIT (http://dev.jquery.com/browser/trunk/jquery/MIT-LICENSE.txt) licenses.   Please attribute the author if you use it. *//* Display a countdown timer.   Attach it with options like:   $('div selector').countdown(       {until: new Date(2009, 1 - 1, 1, 0, 0, 0), onExpiry: happyNewYear}); */(function($) { // Hide scope, no $ conflict/* Countdown manager. */function Countdown() {    this.regional = []; // Available regional settings, indexed by language code    this.regional[''] = { // Default regional settings        // The display texts for the counters        labels: ['Years', 'Months', 'Weeks', 'Days', 'Hours', 'Minutes', 'Seconds'],        // The display texts for the counters if only one        labels1: ['Year', 'Month', 'Week', 'Day', 'Hour', 'Minute', 'Second'],        compactLabels: ['y', 'm', 'w', 'd'], // The compact texts for the counters        timeSeparator: ':', // Separator for time periods        isRTL: false // True for right-to-left languages, false for left-to-right    };    this._defaults = {        until: new Date(2015, 2 - 1, 10), // new Date(year, mth - 1, day, hr, min, sec) - date/time to count down to            // or numeric for seconds offset, or string for unit offset(s):            // 'Y' years, 'O' months, 'W' weeks, 'D' days, 'H' hours, 'M' minutes, 'S' seconds        since: null, // new Date(year, mth - 1, day, hr, min, sec) - date/time to count up from            // or numeric for seconds offset, or string for unit offset(s):            // 'Y' years, 'O' months, 'W' weeks, 'D' days, 'H' hours, 'M' minutes, 'S' seconds        timezone: null, // The timezone (hours or minutes from GMT) for the target times,            // or null for client local        serverSync: null, // A function to retrieve the current server time for synchronisation        format: 'dHMS', // Format for display - upper case for always, lower case only if non-zero,            // 'Y' years, 'O' months, 'W' weeks, 'D' days, 'H' hours, 'M' minutes, 'S' seconds        layout: '', // Build your own layout for the countdown        compact: false, // True to display in a compact format, false for an expanded one        description: '', // The description displayed for the countdown        expiryUrl: '', // A URL to load upon expiry, replacing the current page        expiryText: '', // Text to display upon expiry, replacing the countdown        alwaysExpire: false, // True to trigger onExpiry even if never counted down        onExpiry: null, // Callback when the countdown expires -            // receives no parameters and 'this' is the containing division        onTick: null // Callback when the countdown is updated -            // receives int[7] being the breakdown by period (based on format)            // and 'this' is the containing division    };    $.extend(this._defaults, this.regional['']);}var PROP_NAME = 'countdown';var Y = 0; // Yearsvar O = 1; // Monthsvar W = 2; // Weeksvar D = 3; // Daysvar H = 4; // Hoursvar M = 5; // Minutesvar S = 6; // Seconds$.extend(Countdown.prototype, {    /* Class name added to elements to indicate already configured with countdown. */    markerClassName: 'hasCountdown',        /* Shared timer for all countdowns. */    _timer: setInterval(function() { $.countdown._updateTargets(); }, 980),    /* List of currently active countdown targets. */    _timerTargets: [],        /* Override the default settings for all instances of the countdown widget.       @param  options  (object) the new settings to use as defaults */    setDefaults: function(options) {        this._resetExtraLabels(this._defaults, options);        extendRemove(this._defaults, options || {});    },    /* Convert a date/time to UTC.       @param  tz     (number) the hour or minute offset from GMT, e.g. +9, -360       @param  year   (Date) the date/time in that timezone or                      (number) the year in that timezone       @param  month  (number, optional) the month (0 - 11) (omit if year is a Date)       @param  day    (number, optional) the day (omit if year is a Date)       @param  hours  (number, optional) the hour (omit if year is a Date)       @param  mins   (number, optional) the minute (omit if year is a Date)       @param  secs   (number, optional) the second (omit if year is a Date)       @param  ms     (number, optional) the millisecond (omit if year is a Date)       @return  (Date) the equivalent UTC date/time */    UTCDate: function(tz, year, month, day, hours, mins, secs, ms) {        if (typeof year == 'object' && year.constructor == Date) {            ms = year.getMilliseconds();            secs = year.getSeconds();            mins = year.getMinutes();            hours = year.getHours();            day = year.getDate();            month = year.getMonth();            year = year.getFullYear();        }        var d = new Date();        d.setUTCFullYear(year);        d.setUTCDate(1);        d.setUTCMonth(month || 0);        d.setUTCDate(day || 1);        d.setUTCHours(hours || 0);        d.setUTCMinutes((mins || 0) - (Math.abs(tz) < 30 ? tz * 60 : tz));        d.setUTCSeconds(secs || 0);        d.setUTCMilliseconds(ms || 0);        return d;    },    /* Attach the countdown widget to a div.       @param  target   (element) the containing division       @param  options  (object) the initial settings for the countdown */    _attachCountdown: function(target, options) {        var $target = $(target);        if ($target.hasClass(this.markerClassName)) {            return;        }        $target.addClass(this.markerClassName);        var inst = {options: $.extend({}, options),            _periods: [0, 0, 0, 0, 0, 0, 0]};        $.data(target, PROP_NAME, inst);        this._changeCountdown(target);    },    /* Add a target to the list of active ones.       @param  target  (element) the countdown target */    _addTarget: function(target) {        if (!this._hasTarget(target)) {            this._timerTargets.push(target);        }    },    /* See if a target is in the list of active ones.       @param  target  (element) the countdown target       @return  (boolean) true if present, false if not */    _hasTarget: function(target) {        return ($.inArray(target, this._timerTargets) > -1);    },    /* Remove a target from the list of active ones.       @param  target  (element) the countdown target */    _removeTarget: function(target) {        this._timerTargets = $.map(this._timerTargets,            function(value) { return (value == target ? null : value); }); // delete entry    },    /* Update each active timer target. */    _updateTargets: function() {        for (var i = 0; i < this._timerTargets.length; i++) {            this._updateCountdown(this._timerTargets[i]);        }    },    /* Redisplay the countdown with an updated display.       @param  target  (jQuery) the containing division       @param  inst    (object) the current settings for this instance */    _updateCountdown: function(target, inst) {        var $target = $(target);        inst = inst || $.data(target, PROP_NAME);        if (!inst) {            return;        }        $target.html(this._generateHTML(inst));        $target[(this._get(inst, 'isRTL') ? 'add' : 'remove') + 'Class']('countdown_rtl');        var onTick = this._get(inst, 'onTick');        if (onTick) {            onTick.apply(target, [inst._hold != 'lap' ? inst._periods :                this._calculatePeriods(inst, inst._show, new Date())]);        }        var expired = inst._hold != 'pause' &&            (inst._since ? inst._now.getTime() <= inst._since.getTime() :            inst._now.getTime() >= inst._until.getTime());        if (expired && !inst._expiring) {            inst._expiring = true;            if (this._hasTarget(target) || this._get(inst, 'alwaysExpire')) {                this._removeTarget(target);                var onExpiry = this._get(inst, 'onExpiry');                if (onExpiry) {                    onExpiry.apply(target, []);                }                var expiryText = this._get(inst, 'expiryText');                if (expiryText) {                    var layout = this._get(inst, 'layout');                    inst.options.layout = expiryText;                    this._updateCountdown(target, inst);                    inst.options.layout = layout;                }                var expiryUrl = this._get(inst, 'expiryUrl');                if (expiryUrl) {                    window.location = expiryUrl;                }            }            inst._expiring = false;        }        else if (inst._hold == 'pause') {            this._removeTarget(target);        }        $.data(target, PROP_NAME, inst);    },    /* Reconfigure the settings for a countdown div.       @param  target   (element) the containing division       @param  options  (object) the new settings for the countdown or                        (string) an individual property name       @param  value    (any) the individual property value                        (omit if options is an object) */    _changeCountdown: function(target, options, value) {        options = options || {};        if (typeof options == 'string') {            var name = options;            options = {};            options[name] = value;        }        var inst = $.data(target, PROP_NAME);        if (inst) {            this._resetExtraLabels(inst.options, options);            extendRemove(inst.options, options);            this._adjustSettings(target, inst);            $.data(target, PROP_NAME, inst);            var now = new Date();            if ((inst._since && inst._since < now) ||                    (inst._until && inst._until > now)) {                this._addTarget(target);            }            this._updateCountdown(target, inst);        }    },    /* Reset any extra labelsn and compactLabelsn entries if changing labels.       @param  base     (object) the options to be updated       @param  options  (object) the new option values */    _resetExtraLabels: function(base, options) {        var changingLabels = false;        for (var n in options) {            if (n.match(/[Ll]abels/)) {                changingLabels = true;                break;            }        }        if (changingLabels) {            for (var n in base) { // Remove custom numbered labels                if (n.match(/[Ll]abels[0-9]/)) {                    base[n] = null;                }            }        }    },        /* Calculate interal settings for an instance.       @param  target  (element) the containing division       @param  inst    (object) the current settings for this instance */    _adjustSettings: function(target, inst) {        var serverSync = this._get(inst, 'serverSync');        serverSync = (serverSync ? serverSync.apply(target, []) : null);        var now = new Date();        var timezone = this._get(inst, 'timezone');        timezone = (timezone == null ? -now.getTimezoneOffset() : timezone);        inst._since = this._get(inst, 'since');        if (inst._since) {            inst._since = this.UTCDate(timezone, this._determineTime(inst._since, null));            if (inst._since && serverSync) {                inst._since.setMilliseconds(inst._since.getMilliseconds() +                    now.getTime() - serverSync.getTime());            }        }        inst._until = this.UTCDate(timezone, this._determineTime(this._get(inst, 'until'), now));        if (serverSync) {            inst._until.setMilliseconds(inst._until.getMilliseconds() +                now.getTime() - serverSync.getTime());        }        inst._show = this._determineShow(inst);    },    /* Remove the countdown widget from a div.       @param  target  (element) the containing division */    _destroyCountdown: function(target) {        var $target = $(target);        if (!$target.hasClass(this.markerClassName)) {            return;        }        this._removeTarget(target);        $target.removeClass(this.markerClassName).empty();        $.removeData(target, PROP_NAME);    },    /* Pause a countdown widget at the current time.       Stop it running but remember and display the current time.       @param  target  (element) the containing division */    _pauseCountdown: function(target) {        this._hold(target, 'pause');    },    /* Pause a countdown widget at the current time.       Stop the display but keep the countdown running.       @param  target  (element) the containing division */    _lapCountdown: function(target) {        this._hold(target, 'lap');    },    /* Resume a paused countdown widget.       @param  target  (element) the containing division */    _resumeCountdown: function(target) {        this._hold(target, null);    },    /* Pause or resume a countdown widget.       @param  target  (element) the containing division       @param  hold    (string) the new hold setting */    _hold: function(target, hold) {        var inst = $.data(target, PROP_NAME);        if (inst) {            if (inst._hold == 'pause' && !hold) {                inst._periods = inst._savePeriods;                var sign = (inst._since ? '-' : '+');                inst[inst._since ? '_since' : '_until'] =                    this._determineTime(sign + inst._periods[0] + 'y' +                        sign + inst._periods[1] + 'o' + sign + inst._periods[2] + 'w' +                        sign + inst._periods[3] + 'd' + sign + inst._periods[4] + 'h' +                        sign + inst._periods[5] + 'm' + sign + inst._periods[6] + 's');                this._addTarget(target);            }            inst._hold = hold;            inst._savePeriods = (hold == 'pause' ? inst._periods : null);            $.data(target, PROP_NAME, inst);            this._updateCountdown(target, inst);        }    },    /* Return the current time periods.       @param  target  (element) the containing division       @return  (number[7]) the current periods for the countdown */    _getTimesCountdown: function(target) {        var inst = $.data(target, PROP_NAME);        return (!inst ? null : (!inst._hold ? inst._periods :            this._calculatePeriods(inst, inst._show, new Date())));    },    /* Get a setting value, defaulting if necessary.       @param  inst  (object) the current settings for this instance       @param  name  (string) the name of the required setting       @return  (any) the setting's value or a default if not overridden */    _get: function(inst, name) {        return (inst.options[name] != null ?            inst.options[name] : $.countdown._defaults[name]);    },    /* A time may be specified as an exact value or a relative one.       @param  setting      (string or number or Date) - the date/time value                            as a relative or absolute value       @param  defaultTime  (Date) the date/time to use if no other is supplied       @return  (Date) the corresponding date/time */    _determineTime: function(setting, defaultTime) {        var offsetNumeric = function(offset) { // e.g. +300, -2            var time = new Date();            time.setTime(time.getTime() + offset * 1000);            return time;        };        var offsetString = function(offset) { // e.g. '+2d', '-4w', '+3h +30m'            offset = offset.toLowerCase();            var time = new Date();            var year = time.getFullYear();            var month = time.getMonth();            var day = time.getDate();            var hour = time.getHours();            var minute = time.getMinutes();            var second = time.getSeconds();            var pattern = /([+-]?[0-9]+)\s*(s|m|h|d|w|o|y)?/g;            var matches = pattern.exec(offset);            while (matches) {                switch (matches[2] || 's') {                    case 's': second += parseInt(matches[1], 10); break;                    case 'm': minute += parseInt(matches[1], 10); break;                    case 'h': hour += parseInt(matches[1], 10); break;                    case 'd': day += parseInt(matches[1], 10); break;                    case 'w': day += parseInt(matches[1], 10) * 7; break;                    case 'o':                        month += parseInt(matches[1], 10);                        day = Math.min(day, $.countdown._getDaysInMonth(year, month));                        break;                    case 'y':                        year += parseInt(matches[1], 10);                        day = Math.min(day, $.countdown._getDaysInMonth(year, month));                        break;                }                matches = pattern.exec(offset);            }            return new Date(year, month, day, hour, minute, second, 0);        };        var time = (setting == null ? defaultTime :            (typeof setting == 'string' ? offsetString(setting) :            (typeof setting == 'number' ? offsetNumeric(setting) : setting)));        if (time) time.setMilliseconds(0);        return time;    },    /* Determine the number of days in a month.       @param  year   (number) the year       @param  month  (number) the month       @return  (number) the days in that month */    _getDaysInMonth: function(year, month) {        return 32 - new Date(year, month, 32).getDate();    },    /* Generate the HTML to display the countdown widget.       @param  inst  (object) the current settings for this instance       @return  (string) the new HTML for the countdown display */    _generateHTML: function(inst) {        // Determine what to show        inst._periods = periods = (inst._hold ? inst._periods :            this._calculatePeriods(inst, inst._show, new Date()));        // Show all 'asNeeded' after first non-zero value        var shownNonZero = false;        var showCount = 0;        for (var period = 0; period < inst._show.length; period++) {            shownNonZero |= (inst._show[period] == '?' && periods[period] > 0);            inst._show[period] = (inst._show[period] == '?' && !shownNonZero ? null : inst._show[period]);            showCount += (inst._show[period] ? 1 : 0);        }        var compact = this._get(inst, 'compact');        var layout = this._get(inst, 'layout');        var labels = (compact ? this._get(inst, 'compactLabels') : this._get(inst, 'labels'));        var timeSeparator = this._get(inst, 'timeSeparator');        var description = this._get(inst, 'description') || '';        var showCompact = function(period) {            var labelsNum = $.countdown._get(inst, 'compactLabels' + periods[period]);            return (inst._show[period] ? periods[period] +                (labelsNum ? labelsNum[period] : labels[period]) + ' ' : '');        };        var showFull = function(period) {            var labelsNum = $.countdown._get(inst, 'labels' + periods[period]);            return (inst._show[period] ?                '<span class="countdown_section"><span class="countdown_amount">' +                periods[period] + '</span><br/>' +                (labelsNum ? labelsNum[period] : labels[period]) + '</span>' : '');        };        return (layout ? this._buildLayout(inst, layout, compact) :            ((compact ? // Compact version            '<span class="countdown_row countdown_amount' +            (inst._hold ? ' countdown_holding' : '') + '">' +            showCompact(Y) + showCompact(O) + showCompact(W) + showCompact(D) +            (inst._show[H] ? this._minDigits(periods[H], 2) : '') +            (inst._show[M] ? (inst._show[H] ? timeSeparator : '') +            this._minDigits(periods[M], 2) : '') +            (inst._show[S] ? (inst._show[H] || inst._show[M] ? timeSeparator : '') +            this._minDigits(periods[S], 2) : '') :            // Full version            '<span class="countdown_row countdown_show' + showCount +            (inst._hold ? ' countdown_holding' : '') + '">' +            showFull(Y) + showFull(O) + showFull(W) + showFull(D) +            showFull(H) + showFull(M) + showFull(S)) + '</span>' +            (description ? '<span class="countdown_row countdown_descr">' + description + '</span>' : '')));    },    /* Construct a custom layout.       @param  inst     (object) the current settings for this instance       @param  layout   (string) the customised layout       @param  compact  (boolean) true if using compact labels       @return  (string) the custom HTML */    _buildLayout: function(inst, layout, compact) {        var labels = this._get(inst, (compact ? 'compactLabels' : 'labels'));        var labelFor = function(index) {            return ($.countdown._get(inst,                (compact ? 'compactLabels' : 'labels') + inst._periods[index]) ||                labels)[index];        };        var digit = function(value, position) {            return Math.floor(value / position) % 10;        };        var subs = {desc: this._get(inst, 'description'), sep: this._get(inst, 'timeSeparator'),            yl: labelFor(Y), yn: inst._periods[Y], ynn: this._minDigits(inst._periods[Y], 2),            ynnn: this._minDigits(inst._periods[Y], 3), y1: digit(inst._periods[Y], 1),            y10: digit(inst._periods[Y], 10), y100: digit(inst._periods[Y], 100),            ol: labelFor(O), on: inst._periods[O], onn: this._minDigits(inst._periods[O], 2),            onnn: this._minDigits(inst._periods[O], 3), o1: digit(inst._periods[O], 1),            o10: digit(inst._periods[O], 10), o100: digit(inst._periods[O], 100),            wl: labelFor(W), wn: inst._periods[W], wnn: this._minDigits(inst._periods[W], 2),            wnnn: this._minDigits(inst._periods[W], 3), w1: digit(inst._periods[W], 1),            w10: digit(inst._periods[W], 10), w100: digit(inst._periods[W], 100),            dl: labelFor(D), dn: inst._periods[D], dnn: this._minDigits(inst._periods[D], 2),            dnnn: this._minDigits(inst._periods[D], 3), d1: digit(inst._periods[D], 1),            d10: digit(inst._periods[D], 10), d100: digit(inst._periods[D], 100),            hl: labelFor(H), hn: inst._periods[H], hnn: this._minDigits(inst._periods[H], 2),            hnnn: this._minDigits(inst._periods[H], 3), h1: digit(inst._periods[H], 1),            h10: digit(inst._periods[H], 10), h100: digit(inst._periods[H], 100),            ml: labelFor(M), mn: inst._periods[M], mnn: this._minDigits(inst._periods[M], 2),            mnnn: this._minDigits(inst._periods[M], 3), m1: digit(inst._periods[M], 1),            m10: digit(inst._periods[M], 10), m100: digit(inst._periods[M], 100),            sl: labelFor(S), sn: inst._periods[S], snn: this._minDigits(inst._periods[S], 2),            snnn: this._minDigits(inst._periods[S], 3), s1: digit(inst._periods[S], 1),            s10: digit(inst._periods[S], 10), s100: digit(inst._periods[S], 100)};        var html = layout;        // Replace period containers: {p<}...{p>}        for (var i = 0; i < 7; i++) {            var period = 'yowdhms'.charAt(i);            var re = new RegExp('\\{' + period + '<\\}(.*)\\{' + period + '>\\}', 'g');            html = html.replace(re, (inst._show[i] ? '$1' : ''));        }        // Replace period values: {pn}        $.each(subs, function(n, v) {            var re = new RegExp('\\{' + n + '\\}', 'g');            html = html.replace(re, v);        });        return html;    },    /* Ensure a numeric value has at least n digits for display.       @param  value  (number) the value to display       @param  len    (number) the minimum length       @return  (string) the display text */    _minDigits: function(value, len) {        value = '0000000000' + value;        return value.substr(value.length - len);    },    /* Translate the format into flags for each period.       @param  inst  (object) the current settings for this instance       @return  (string[7]) flags indicating which periods are requested (?) or                required (!) by year, month, week, day, hour, minute, second */    _determineShow: function(inst) {        var format = this._get(inst, 'format');        var show = [];        show[Y] = (format.match('y') ? '?' : (format.match('Y') ? '!' : null));        show[O] = (format.match('o') ? '?' : (format.match('O') ? '!' : null));        show[W] = (format.match('w') ? '?' : (format.match('W') ? '!' : null));        show[D] = (format.match('d') ? '?' : (format.match('D') ? '!' : null));        show[H] = (format.match('h') ? '?' : (format.match('H') ? '!' : null));        show[M] = (format.match('m') ? '?' : (format.match('M') ? '!' : null));        show[S] = (format.match('s') ? '?' : (format.match('S') ? '!' : null));        return show;    },        /* Calculate the requested periods between now and the target time.       @param  inst  (object) the current settings for this instance       @param  show  (string[7]) flags indicating which periods are requested/required       @param  now   (Date) the current date and time       @return  (number[7]) the current time periods (always positive)                by year, month, week, day, hour, minute, second */    _calculatePeriods: function(inst, show, now) {        // Find endpoints        inst._now = now;        inst._now.setMilliseconds(0);        var until = new Date(inst._now.getTime());        if (inst._since && now.getTime() < inst._since.getTime()) {            inst._now = now = until;        }        else if (inst._since) {            now = inst._since;        }        else {            until.setTime(inst._until.getTime());            if (now.getTime() > inst._until.getTime()) {                inst._now = now = until;            }        }        // Calculate differences by period        var periods = [0, 0, 0, 0, 0, 0, 0];        if (show[Y] || show[O]) {            // Treat end of months as the same            var lastNow = $.countdown._getDaysInMonth(now.getFullYear(), now.getMonth());            var lastUntil = $.countdown._getDaysInMonth(until.getFullYear(), until.getMonth());            var sameDay = (until.getDate() == now.getDate() ||                (until.getDate() >= Math.min(lastNow, lastUntil) &&                now.getDate() >= Math.min(lastNow, lastUntil)));            var getSecs = function(date) {                return (date.getHours() * 60 + date.getMinutes()) * 60 + date.getSeconds();            };            var months = Math.max(0,                (until.getFullYear() - now.getFullYear()) * 12 + until.getMonth() - now.getMonth() +                ((until.getDate() < now.getDate() && !sameDay) ||                (sameDay && getSecs(until) < getSecs(now)) ? -1 : 0));            periods[Y] = (show[Y] ? Math.floor(months / 12) : 0);            periods[O] = (show[O] ? months - periods[Y] * 12 : 0);            // Adjust for months difference and end of month if necessary            var adjustDate = function(date, offset, last) {                var wasLastDay = (date.getDate() == last);                var lastDay = $.countdown._getDaysInMonth(date.getFullYear() + offset * periods[Y],                    date.getMonth() + offset * periods[O]);                if (date.getDate() > lastDay) {                    date.setDate(lastDay);                }                date.setFullYear(date.getFullYear() + offset * periods[Y]);                date.setMonth(date.getMonth() + offset * periods[O]);                if (wasLastDay) {                    date.setDate(lastDay);                }                return date;            };            if (inst._since) {                until = adjustDate(until, -1, lastUntil);            }            else {                now = adjustDate(new Date(now.getTime()), +1, lastNow);            }        }        var diff = Math.floor((until.getTime() - now.getTime()) / 1000);        var extractPeriod = function(period, numSecs) {            periods[period] = (show[period] ? Math.floor(diff / numSecs) : 0);            diff -= periods[period] * numSecs;        };        extractPeriod(W, 604800);        extractPeriod(D, 86400);        extractPeriod(H, 3600);        extractPeriod(M, 60);        extractPeriod(S, 1);        return periods;    }});/* jQuery extend now ignores nulls!   @param  target  (object) the object to update   @param  props   (object) the new settings   @return  (object) the updated object */function extendRemove(target, props) {    $.extend(target, props);    for (var name in props) {        if (props[name] == null) {            target[name] = null;        }    }    return target;}/* Process the countdown functionality for a jQuery selection.   @param  command  (string) the command to run (optional, default 'attach')   @param  options  (object) the new settings to use for these countdown instances   @return  (jQuery) for chaining further calls */$.fn.countdown = function(options) {    var otherArgs = Array.prototype.slice.call(arguments, 1);    if (options == 'getTimes') {        return $.countdown['_' + options + 'Countdown'].            apply($.countdown, [this[0]].concat(otherArgs));    }    return this.each(function() {        if (typeof options == 'string') {            $.countdown['_' + options + 'Countdown'].apply($.countdown, [this].concat(otherArgs));        }        else {            $.countdown._attachCountdown(this, options);        }    });};/* Initialise the countdown functionality. */$.countdown = new Countdown(); // singleton instance})(jQuery);

Tentei colocar o new date mas fica 0 0 0 0 na página.

[DiF]

Cara, esquece esses códigos prontos.( a pessoa sempre se perde neles)

Veja as páginas que eu recomendei. são plugins que fazem o que você quer em poucas linhas.

 

Única coisa que você precisa é saber instanciar uma data no javascript ou php e utilizar o plugin.

exemplo: http://jsfiddle.net/um1awu1e/1/

 

Foi utilizado o plugin The final countdown.. a data foi colocada direto.. mas você pode dinamizar isso criando uma variável que recebe uma data.. seja de um banco de dados.. ou instanciando no JS ou no PHP

como nesse mesmo exemplo aqui: http://jsfiddle.net/um1awu1e/2/