数字动态增长
<html>
<head>
<meta charset="utf-8"/>
</head>
<div data-speed="1500" data-from="10" data-to="50" id="count-number" class="textd timer"></div><span>元</span>
<script src="https://cdn.bootcss.com/jquery/2.2.1/jquery.min.js"></script>
<script type="text/javascript" src="sizeChange.js"></script>
</html>
sizeChange.js
$.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, // 开始数据
to: 0, // 结束数据
speed: 1000, // 过渡时间
refreshInterval: 100, // 刷新时间
decimals: 2, // 小数点位数
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
function timer(){
$(‘.timer‘).each(count);
function count(options) {
var $this = $(this);
options = $.extend({}, options || {}, $this.data(‘countToOptions‘) || {});
$this.countTo(options);
}
}
timer();
时间： 2024-08-10 17:05:15