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怎么请求一个小程序_js完成简略数字改动效果

时间:2021-01-11 13:13来源:怎么请求一个小程序 作者:jianzhan 点击:
js完成简易数据变化实际效果 本文关键为大伙儿详尽详细介绍了js完成数据变化实际效果,具备一定的参照使用价值,很感兴趣的小伙子伴们能够参照一下$.fn.countTo = function (optio
js实现简单数字变动效果       这篇文章主要为大家详细介绍了js实现数字变动效果,具有一定的参考价值,感兴趣的小伙伴们可以参考一下
$.fn.countTo = function (options) { options = options || {};//当options未被初始化,即typeof options = 'undefined'时,执行后面部分即var options = {}来初始化一个对象 return $(this).each(function () { // set options for current element var settings = $.extend({}, $.fn.countTo.defaults, { from: $(this).data('from'), to: $(this).data('to'), speed: $(this).data('speed'), refreshInterval: $(this).data('refresh-interval'), decimals: $(this).data('decimals') }, options); // how many times to update the value, and how much to increment the value on each update //更新值多少次,每次更新值多快 var loo凡科抠图 = Math.ceil(settings.speed / settings.refreshInterval), increment = (settings.to - settings.from) / loo凡科抠图; // references variables that will change with each update //引用和变量每次更新将改变 var self = this,//返回html对象 $self = $(this),//返回返回一个jquery对象 loopCount = 0, value = settings.from, data = $self.data('countTo') || {};//获取jauery方法对象 $self.data('countTo', data);//赋值 // if an existing interval can be found, clear it first //如果存在间隔,则清除它 if (data.interval) { clearInterval(data.interval); data.interval = setInterval(updateTimer, settings.refreshInterval); // initialize the element with the starting value //用开始的值初始化 render(value); function updateTimer() { value += increment; loopCount++; render(value); if (typeof(settings.onUpdate) == 'function') { settings.onUpdate.call(self, value); if (loopCount = loo凡科抠图) { // remove the interval $self.removeData('countTo'); clearInterval(data.interval); value = settings.to; if (typeof(settings.onComplete) == 'function') { settings.onComplete.call(self, value); function render(value) { var formattedValue = settings.formatter.call(self, value, settings); $(formattedValue); $.fn.countTo.defaults = { from: 200, // 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: 1, // 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 function formatter(value, settings) { return value.toFixed(settings.decimals); // custom formatting example $('#count-number').data('countToOptions', { formatter: function (value, options) { return value.toFixed(options.decimals).replace(/\B( =( :\d{3})+( !\d))/g, ','); // start all the timers $('.timer').each(count); function count(options) { var $this = $(this); options = $.extend({}, options || {}, $this.data('countToOptions') || {}); $this.countTo(options);

apply与call的简单用法,学习。

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凡科。


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