CountUp.js实现数字滚动增值效果
(编辑:jimmy 日期: 2024/11/27 浏览:3 次 )
数据改动的时候,countUp.js进行数值滚动增加的动态效果,供大家参考,具体内容如下
这是js文件
// 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 tesult = currTime + timeToCall var id = window.setTimeout(function () { callback(tesult) }, timeToCall) lastTime = currTime + timeToCall return id } } if (!window.cancelAnimationFrame) { window.cancelAnimationFrame = function (id) { clearTimeout(id) } } function formatNumber (num) { var neg = (num < 0) var x, x1, x2, x3, i, len num = Math.abs(num).toFixed(self.decimals) num += '' x = num.split('.') x1 = x[0] x2 = x.length > 1 "htmlcode">var options = { useEasing: true, // 使用缓和效果 useGrouping: true, // 使用分组效果 separator: ',', // 分离器,数据够三位,例如100,000 decimal: '.', // 小数点分割,例如:10.00 prefix: '', // 第一位默认数字,例如:¥ suffix: '' // 最后一位默认数字,例如:元,美元 } // new CountUp(target, startVal, endVal, decimals, duration, options) // target = 目标元素的 ID // startVal = 开始值 // endVal = 结束值 // decimals = 小数位数 默认值是0 // duration = 动画延迟秒数,默认值是2; // options = optional object of options (see below) var demo = new CountUp('extractionMoney', 0, data.balanceAmount, 2, 0.5, options) if (!demo.error) { demo.start() } else { console.error(demo.error) }以上就是本文的全部内容,希望对大家的学习有所帮助,也希望大家多多支持。
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