/*Copyright (c) 2012-2014 Matt Huggins ----------------------------------------------------------------------- https://github.com/mhuggins/jquery-countTo The MIT License Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */ (function ($) { var CountTo = function (element, options) { this.$element = $(element); this.options = $.extend({}, CountTo.DEFAULTS, this.dataOptions(), options); this.init(); }; CountTo.DEFAULTS = { from: 0, // the number the element should start at to: 0, // the number the element should end at speed: 1000, // how long it should take to count between the target numbers refreshInterval: 100, // how often the element should be updated decimals: 0, // the number of decimal places to show formatter: formatter, // handler for formatting the value before rendering onUpdate: null, // callback method for every time the element is updated onComplete: null // callback method for when the element finishes updating }; CountTo.prototype.init = function () { this.value = this.options.from; this.loops = Math.ceil(this.options.speed / this.options.refreshInterval); this.loopCount = 0; this.increment = (this.options.to - this.options.from) / this.loops; }; CountTo.prototype.dataOptions = function () { var options = { from: this.$element.data('from'), to: this.$element.data('to'), speed: this.$element.data('speed'), refreshInterval: this.$element.data('refresh-interval'), decimals: this.$element.data('decimals') }; var keys = Object.keys(options); for (var i in keys) { var key = keys[i]; if (typeof(options[key]) === 'undefined') { delete options[key]; } } return options; }; CountTo.prototype.update = function () { this.value += this.increment; this.loopCount++; this.render(); if (typeof(this.options.onUpdate) == 'function') { this.options.onUpdate.call(this.$element, this.value); } if (this.loopCount >= this.loops) { clearInterval(this.interval); this.value = this.options.to; if (typeof(this.options.onComplete) == 'function') { this.options.onComplete.call(this.$element, this.value); } } }; CountTo.prototype.render = function () { var formattedValue = this.options.formatter.call(this.$element, this.value, this.options); this.$element.text(formattedValue); }; CountTo.prototype.restart = function () { this.stop(); this.init(); this.start(); }; CountTo.prototype.start = function () { this.stop(); this.render(); this.interval = setInterval(this.update.bind(this), this.options.refreshInterval); }; CountTo.prototype.stop = function () { if (this.interval) { clearInterval(this.interval); } }; CountTo.prototype.toggle = function () { if (this.interval) { this.stop(); } else { this.start(); } }; function formatter(value, options) { return value.toFixed(options.decimals); } $.fn.countTo = function (option) { return this.each(function () { var $this = $(this); var data = $this.data('countTo'); var init = !data || typeof(option) === 'object'; var options = typeof(option) === 'object' ? option : {}; var method = typeof(option) === 'string' ? option : 'start'; if (init) { if (data) data.stop(); $this.data('countTo', data = new CountTo(this, options)); } data[method].call(data); }); }; }(jQuery));