File size: 3,760 Bytes
a00ace6 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 | (function (factory) {
if (typeof define === 'function' && define.amd) {
// AMD
define(['jquery'], factory);
} else if (typeof exports === 'object') {
// CommonJS
factory(require('jquery'));
} else {
// Browser globals
factory(jQuery);
}
}(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);
});
};
})); |