直接贴代码在此了，方便使用嘛~
countUp.js
(function(root, factory) { if (typeof define === 'function' && define.amd) { define(factory); } else if (typeof exports === 'object') { module.exports = factory(require, exports, module); } else { root.CountUp = factory(); } }(this, function(require, exports, module) { /* countUp.js by @inorganik */ // target = id of html element or var of previously selected html element where counting occurs // startVal = the value you want to begin at // endVal = the value you want to arrive at // decimals = number of decimal places, default 0 // duration = duration of animation in seconds, default 2 // options = optional object of options (see below) var CountUp = function(target, startVal, endVal, decimals, duration, options) { var self = this; self.version = function () { return '1.9.3'; }; // default options self.options = { useEasing: true, // toggle easing useGrouping: true, // 1,000,000 vs 1000000 separator: ',', // character to use as a separator decimal: '.', // character to use as a decimal easingFn: easeOutExpo, // optional custom easing function, default is Robert Penner's easeOutExpo formattingFn: formatNumber, // optional custom formatting function, default is formatNumber above prefix: '', // optional text before the result suffix: '', // optional text after the result numerals: [] // optionally pass an array of custom numerals for 0-9 }; // extend default options with passed options object if (options && typeof options === 'object') { for (var key in self.options) { if (options.hasOwnProperty(key) && options[key] !== null) { self.options[key] = options[key]; } } } if (self.options.separator === '') { self.options.useGrouping = false; } else { // ensure the separator is a string (formatNumber assumes this) self.options.separator = '' + self.options.separator; } // make sure requestAnimationFrame and cancelAnimationFrame are defined // polyfill for browsers without native support // by Opera engineer Erik Möller var lastTime = 0; var vendors = ['webkit', 'moz', 'ms', 'o']; for(var x = 0; x < vendors.length && !window.requestAnimationFrame; ++x) { window.requestAnimationFrame = window[vendors[x]+'RequestAnimationFrame']; window.cancelAnimationFrame = window[vendors[x]+'CancelAnimationFrame'] || window[vendors[x]+'CancelRequestAnimationFrame']; } if (!window.requestAnimationFrame) { window.requestAnimationFrame = function(callback, element) { var currTime = new Date().getTime(); var timeToCall = Math.max(0, 16 - (currTime - lastTime)); var id = window.setTimeout(function() { callback(currTime + timeToCall); }, timeToCall); lastTime = currTime + timeToCall; return id; }; } if (!window.cancelAnimationFrame) { window.cancelAnimationFrame = function(id) { clearTimeout(id); }; } function formatNumber(num) { var neg = (num < 0), x, x1, x2, x3, i, len; num = Math.abs(num).toFixed(self.decimals); num += ''; x = num.split('.'); x1 = x[0]; x2 = x.length > 1 ? self.options.decimal + x[1] : ''; if (self.options.useGrouping) { x3 = ''; for (i = 0, len = x1.length; i < len; ++i) { if (i !== 0 && ((i % 3) === 0)) { x3 = self.options.separator + x3; } x3 = x1[len - i - 1] + x3; } x1 = x3; } // optional numeral substitution if (self.options.numerals.length) { x1 = x1.replace(/[0-9]/g, function(w) { return self.options.numerals[+w]; }) x2 = x2.replace(/[0-9]/g, function(w) { return self.options.numerals[+w]; }) } return (neg ? '-' : '') + self.options.prefix + x1 + x2 + self.options.suffix; } // Robert Penner's easeOutExpo function easeOutExpo(t, b, c, d) { return c * (-Math.pow(2, -10 * t / d) + 1) * 1024 / 1023 + b; } function ensureNumber(n) { return (typeof n === 'number' && !isNaN(n)); } self.initialize = function() { if (self.initialized) return true; self.error = ''; self.d = (typeof target === 'string') ? document.getElementById(target) : target; if (!self.d) { self.error = '[CountUp] target is null or undefined' return false; } self.startVal = Number(startVal); self.endVal = Number(endVal); // error checks if (ensureNumber(self.startVal) && ensureNumber(self.endVal)) { self.decimals = Math.max(0, decimals || 0); self.dec = Math.pow(10, self.decimals); self.duration = Number(duration) * 1000 || 2000; self.countDown = (self.startVal > self.endVal); self.frameVal = self.startVal; self.initialized = true; return true; } else { self.error = '[CountUp] startVal ('+startVal+') or endVal ('+endVal+') is not a number'; return false; } }; // Print value to target self.printValue = function(value) { var result = self.options.formattingFn(value); if (self.d.tagName === 'INPUT') { this.d.value = result; } else if (self.d.tagName === 'text' || self.d.tagName === 'tspan') { this.d.textContent = result; } else { this.d.innerHTML = result; } }; self.count = function(timestamp) { if (!self.startTime) { self.startTime = timestamp; } self.timestamp = timestamp; var progress = timestamp - self.startTime; self.remaining = self.duration - progress; // to ease or not to ease if (self.options.useEasing) { if (self.countDown) { self.frameVal = self.startVal - self.options.easingFn(progress, 0, self.startVal - self.endVal, self.duration); } else { self.frameVal = self.options.easingFn(progress, self.startVal, self.endVal - self.startVal, self.duration); } } else { if (self.countDown) { self.frameVal = self.startVal - ((self.startVal - self.endVal) * (progress / self.duration)); } else { self.frameVal = self.startVal + (self.endVal - self.startVal) * (progress / self.duration); } } // don't go past endVal since progress can exceed duration in the last frame if (self.countDown) { self.frameVal = (self.frameVal < self.endVal) ? self.endVal : self.frameVal; } else { self.frameVal = (self.frameVal > self.endVal) ? self.endVal : self.frameVal; } // decimal self.frameVal = Math.round(self.frameVal*self.dec)/self.dec; // format and print value self.printValue(self.frameVal); // whether to continue if (progress < self.duration) { self.rAF = requestAnimationFrame(self.count); } else { if (self.callback) self.callback(); } }; // start your animation self.start = function(callback) { if (!self.initialize()) return; self.callback = callback; self.rAF = requestAnimationFrame(self.count); }; // toggles pause/resume animation self.pauseResume = function() { if (!self.paused) { self.paused = true; cancelAnimationFrame(self.rAF); } else { self.paused = false; delete self.startTime; self.duration = self.remaining; self.startVal = self.frameVal; requestAnimationFrame(self.count); } }; // reset to startVal so animation can be run again self.reset = function() { self.paused = false; delete self.startTime; self.initialized = false; if (self.initialize()) { cancelAnimationFrame(self.rAF); self.printValue(self.startVal); } }; // pass a new endVal and start animation self.update = function (newEndVal) { if (!self.initialize()) return; newEndVal = Number(newEndVal); if (!ensureNumber(newEndVal)) { self.error = '[CountUp] update() - new endVal is not a number: '+newEndVal; return; } self.error = ''; if (newEndVal === self.frameVal) return; cancelAnimationFrame(self.rAF); self.paused = false; delete self.startTime; self.startVal = self.frameVal; self.endVal = newEndVal; self.countDown = (self.startVal > self.endVal); self.rAF = requestAnimationFrame(self.count); }; // format startVal on initialization if (self.initialize()) self.printValue(self.startVal); }; return CountUp; }));
css
/* 自己写 */
html
<div id="num1">25,000</div> <div id="num2">1,000</div> <div id="num3">400+</div> <div id="num4">700+</div> <div id="num5">65+</div>
JS
<script> $(document).ready(function(){ var countUp_num1 = new CountUp("num1", 0, 3450, 0, 3, { useEasing: true, useGrouping: true, separator: ',', decimal: '.', prefix: '', suffix: '' }); var countUp_num2 = new CountUp("num2", 0, 1500, 0, 4, { useEasing: true, useGrouping: true, separator: ',', decimal: '.', prefix: '', suffix: '' }); var countUp_num3 = new CountUp("num3", 0, 1380, 0, 3, { useEasing: true, useGrouping: true, separator: ',', decimal: '.', prefix: '', suffix: '+' }); var countUp_num4 = new CountUp("num4", 0, 330, 0, 3, { useEasing: true, useGrouping: true, separator: ',', decimal: '.', prefix: '', suffix: '+' }); var countUp_num5 = new CountUp("num5", 0, 76, 0, 3, { useEasing: true, useGrouping: true, separator: ',', decimal: '.', prefix: '', suffix: '+' }); countUp_num1.start(); countUp_num2.start(); countUp_num3.start(); countUp_num4.start(); countUp_num5.start(); }); </script>
=======================以上是一个例子，以下是说明========================
最基本的使用方法：
<script> new CountUp("elemid", 0, 76, 0, 3, options).start(); </script>
options参数说明：
var options = {
useEasing: true, // 使用缓和
useGrouping: true, // 使用分组(是否显示千位分隔符,一般为 true)
separator: ',', // 分隔器(千位分隔符,默认为',')
decimal: '.', // 十进制(小数点符号,默认为 '.')
prefix: '', // 字首(数字的前缀,根据需要可设为 $,¥,￥ 等)
suffix: '' // 后缀(数字的后缀 ,根据需要可设为 元,个,美元 等)
};
CountUp(参数一, 参数二, 参数三, 参数四, 参数五, 参数六)
参数一: 数字所在容器
参数二: 数字开始增长前的默认值(起始值),一般从 0 开始增长
参数三: 数字增长后的最终值,该值一般通过异步请求获取
参数四: 数字小数点后保留的位数
参数五: 数字增长特效的时间,此处为3秒
参数六: 其他配置项
注: 参数六也可不加,其配置项则为默认值