我非常擅长修补jQuery。我找到了一个计数器计数器的解决方案,用于显示%的节省。
我遇到的问题是,它会在页面加载后立即运行,并且元素在屏幕下方稍微移动,并且它会失去效果,因为当访问者看到网站时,计数器已经达到了这个数字。
我需要等待加载,直到它在浏览器中进入视图。我感谢任何帮助。谢谢。
(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.text(formattedValue);
}
});
};
$.fn.countTo.defaults = {
from: 0, // the number the element should start at
to: 0, // the number the element should end at
speed: 5000, // how long it should take to count between the target numbers
refreshInterval: 1000, // 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));

<div class="ui-129 text-center">
<div id="counter" class="counter-item">
<!-- Icon -->
<i class="fa fa-usd green">
<!-- Number -->
<span class="number-count" data-from="0" data-to="28" data-speed="5000" data-refresh-interval="10"></span>%
</i>
<!-- Border -->
<hr class="br-green" />
<!-- Heading -->
<h5>less than the "other guys"</h5>
</div>
</div>
<!-- End CountUP -->
<script> <!-- I have this script in my custom.js folder, not in the html -->
$(document).ready(function(){
$('.number-count').countTo();
});
</script>
&#13;
所有CSS渲染并正常运行..如果我需要在此处添加,请告诉我,我很乐意这样做。
答案 0 :(得分:0)
您可以使用
scroll
事件操作脚本。
function isScrolledIntoView(elem) {
var $elem = $(elem);
var $window = $(window);
var docViewTop = $window.scrollTop();
var docViewBottom = docViewTop + $window.height();
var elemTop = $elem.offset().top;
var elemBottom = elemTop + $elem.height();
return ((elemBottom <= docViewBottom) && (elemTop >= docViewTop));
}
var message = $('#message');
$(window).scroll(function() {
if (isScrolledIntoView('#hiddenElem')) {
message.text("Visible");
} else {
message.text("Invisible");
}
});
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>
<h3 style="position:fixed;top: 0;left: 0;background: white" id="message"></h3>
<br>Hello..
<br>Hello..
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<div id="hiddenElem">HiddenElem</div>
在你的情况下,试试这个:
$(window).on('scroll', function () {
if (isScrolledIntoView('#hiddenElem')) {
$('.number-count').countTo();
$(window).off('scroll');
}
});