Javascript 我如何修改这个只在用户向下滚动时计数的jQuery脚本?
我偶然发现了这段代码,它在jQuery中对一个网站起到了相当大的作用 我如何修改它以等待开始计数,直到用户向下滚动到类“counter Colu_fourth”或其他类 我知道我需要使用scroll类,但我不知道如何使用它 我正在考虑使用类似于 //由Sayed Rafeeq创建Javascript 我如何修改这个只在用户向下滚动时计数的jQuery脚本?,javascript,jquery,html,css,timer,Javascript,Jquery,Html,Css,Timer,我偶然发现了这段代码,它在jQuery中对一个网站起到了相当大的作用 我如何修改它以等待开始计数,直到用户向下滚动到类“counter Colu_fourth”或其他类 我知道我需要使用scroll类,但我不知道如何使用它 我正在考虑使用类似于 //由Sayed Rafeeq创建 (function ($) { $.fn.countTo = function (options) { options = options || {}; return $(this).each(f
(function ($) {
$.fn.countTo = function (options) {
options = options || {};
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
var loops = Math.ceil(settings.speed / settings.refreshInterval),
increment = (settings.to - settings.from) / loops;
// references & variables that will change with each update
var self = this,
$self = $(this),
loopCount = 0,
value = settings.from,
data = $self.data('countTo') || {};
$self.data('countTo', data);
// if an existing interval can be found, clear it first
if (data.interval) {
clearInterval(data.interval);
}
data.interval = setInterval(updateTimer, settings.refreshInterval);
// initialize the element with the starting value
render(value);
function updateTimer() {
value += increment;
loopCount++;
render(value);
if (typeof(settings.onUpdate) == 'function') {
settings.onUpdate.call(self, value);
}
if (loopCount >= loops) {
// 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);
$self.html(formattedValue);
}
});
};
$.fn.countTo.defaults = {
from: 0, // the number the element should start at
to: 0, // the number the element should end at
speed: 1000, // how long it should take to count between the target numbers
refreshInterval: 100, // how often the element should be updated
decimals: 0, // the number of decimal places to show
formatter: formatter, // handler for formatting the value before rendering
onUpdate: null, // callback method for every time the element is updated
onComplete: null // callback method for when the element finishes updating
};
function formatter(value, settings) {
return value.toFixed(settings.decimals);
}
}(jQuery));
jQuery(function ($) {
// 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') || {});
$this.countTo(options);
}
});
所有借用的小模块,这样链接的CodePen JS不会在加载时自动运行(timerNew类而不是timer)
//来自http://stackoverflow.com/a/33138553/4946681
函数IsCrolledinToView(elem){
变量$elem=$(elem);
变量$window=$(window);
var docViewTop=$window.scrollTop();
var docViewBottom=docViewTop+$window.height();
var elemTop=$elem.offset().top;
var elemBottom=elemTop+$elem.height();
返回((elemBottom=docViewTop));
}
$(窗口).on('scroll',函数(){
if(isScrolledIntoView('.wrapper')){
$('.timerNew').countTo();
$(窗口).off('scroll');
}
});代码>
.spacer{
高度:2000px;
}
JQUERY数字动画
jQuery计数器,以计数到目标数字
SomeText Goesher
SomeText Goesher
SomeText Goesher
SomeText Goesher
所有借用的小型模块,以便链接的CodePen JS不会在加载时自动运行(timerNew类而不是timer)
//来自http://stackoverflow.com/a/33138553/4946681
函数IsCrolledinToView(elem){
变量$elem=$(elem);
变量$window=$(window);
var docViewTop=$window.scrollTop();
var docViewBottom=docViewTop+$window.height();
var elemTop=$elem.offset().top;
var elemBottom=elemTop+$elem.height();
返回((elemBottom=docViewTop));
}
$(窗口).on('scroll',函数(){
if(isScrolledIntoView('.wrapper')){
$('.timerNew').countTo();
$(窗口).off('scroll');
}
});代码>
.spacer{
高度:2000px;
}
JQUERY数字动画
jQuery计数器,以计数到目标数字
SomeText Goesher
SomeText Goesher
SomeText Goesher
SomeText Goesher
非常有魅力!我将继续使用jQuery,以便有一天我可以像您一样编写代码。谢谢你的帮助!工作起来很有魅力!我将继续使用jQuery,以便有一天我可以像您一样编写代码。谢谢你的帮助!