WEB_CORE/Swift.web/Images/luckydraw/jquery.animateNumber.js

/** @preserve jQuery animateNumber plugin v0.0.12
 * (c) 2013, Alexandr Borisov.
 * https://github.com/aishek/jquery-animateNumber
 */

// ['...'] notation using to avoid names minification by Google Closure Compiler
(function ($) {
    var reverse = function (value) {
        return value.split('').reverse().join('');
    };

    var defaults = {
        numberStep: function (now, tween) {
            var floored_number = Math.floor(now),
                target = $(tween.elem);

            target.text(floored_number);
        }
    };

    var handle = function (tween) {
        var elem = tween.elem;
        if (elem.nodeType && elem.parentNode) {
            var handler = elem._animateNumberSetter;
            if (!handler) {
                handler = defaults.numberStep;
            }
            handler(tween.now, tween);
        }
    };

    if (!$.Tween || !$.Tween.propHooks) {
        $.fx.step.number = handle;
    } else {
        $.Tween.propHooks.number = {
            set: handle
        };
    }

    var extract_number_parts = function (separated_number, group_length) {
        var numbers = separated_number.split('').reverse(),
            number_parts = [],
            current_number_part,
            current_index,
            q;

        for (var i = 0, l = Math.ceil(separated_number.length / group_length); i < l; i++) {
            current_number_part = '';
            for (q = 0; q < group_length; q++) {
                current_index = i * group_length + q;
                if (current_index === separated_number.length) {
                    break;
                }

                current_number_part = current_number_part + numbers[current_index];
            }
            number_parts.push(current_number_part);
        }

        return number_parts;
    };

    var remove_precending_zeros = function (number_parts) {
        var last_index = number_parts.length - 1,
            last = reverse(number_parts[last_index]);

        number_parts[last_index] = reverse(parseInt(last, 10).toString());
        return number_parts;
    };

    $.animateNumber = {
        numberStepFactories: {
            /**
             * Creates numberStep handler, which appends string to floored animated number on each step.
             *
             * @example
             * // will animate to 100 with "1 %", "2 %", "3 %", ...
             * $('#someid').animateNumber({
             *   number: 100,
             *   numberStep: $.animateNumber.numberStepFactories.append(' %')
             * });
             *
             * @params {String} suffix string to append to animated number
             * @returns {Function} numberStep-compatible function for use in animateNumber's parameters
             */
            append: function (suffix) {
                return function (now, tween) {
                    var floored_number = Math.floor(now),
                        target = $(tween.elem);

                    target.prop('number', now).text(floored_number + suffix);
                };
            },

            /**
             * Creates numberStep handler, which format floored numbers by separating them to groups.
             *
             * @example
             * // will animate with 1 ... 217,980 ... 95,217,980 ... 7,095,217,980
             * $('#world-population').animateNumber({
             *    number: 7095217980,
             *    numberStep: $.animateNumber.numberStepFactories.separator(',')
             * });
             * @example
             * // will animate with 1% ... 217,980% ... 95,217,980% ... 7,095,217,980%
             * $('#salesIncrease').animateNumber({
             *   number: 7095217980,
             *   numberStep: $.animateNumber.numberStepFactories.separator(',', 3, '%')
             * });
             *
             * @params {String} [separator=' '] string to separate number groups
             * @params {String} [group_length=3] number group length
             * @params {String} [suffix=''] suffix to append to number
             * @returns {Function} numberStep-compatible function for use in animateNumber's parameters
             */
            separator: function (separator, group_length, suffix) {
                separator = separator || ' ';
                group_length = group_length || 3;
                suffix = suffix || '';

                return function (now, tween) {
                    var floored_number = Math.floor(now),
                        separated_number = floored_number.toString(),
                        target = $(tween.elem);

                    if (separated_number.length > group_length) {
                        var number_parts = extract_number_parts(separated_number, group_length);

                        separated_number = remove_precending_zeros(number_parts).join(separator);
                        separated_number = reverse(separated_number);
                    }

                    target.prop('number', now).text(separated_number + suffix);
                };
            }
        }
    };

    $.fn.animateNumber = function () {
        var options = arguments[0],
            settings = $.extend({}, defaults, options),

            target = $(this),
            args = [settings];

        for (var i = 1, l = arguments.length; i < l; i++) {
            args.push(arguments[i]);
        }

        // needs of custom step function usage
        if (options.numberStep) {
            // assigns custom step functions
            var items = this.each(function () {
                this._animateNumberSetter = options.numberStep;
            });

            // cleanup of custom step functions after animation
            var generic_complete = settings.complete;
            settings.complete = function () {
                items.each(function () {
                    delete this._animateNumberSetter;
                });

                if (generic_complete) {
                    generic_complete.apply(this, arguments);
                }
            };
        }

        return target.animate.apply(target, args);
    };
}(jQuery));