我用简单的填充动画创建了一些甜甜圈图,但是在滚动触发动画时遇到了麻烦。添加animate.css和wow.js是一个好主意,还是有一种更简单的方法来触发函数内部的动画?如果您能解决此问题,请先谢谢您的帮助。
<div class="donut-chart orange" data-percent="72">
<p><span class="counter" data-count="72">0</span>%</p>
<div class="doughnut"></div>
</div>
$(function() {
$('.donut-chart').each(function(index) {
$(this).append('<svg preserveAspectRatio="xMidYMid" xmlns:xlink="http://www.w3.org/1999/xlink" id="donutChartSVG' + index + '"><path d="M100,100"/></svg>');
var p = new Donut_chart({
element: $('#donutChartSVG' + index),
percent: $(this).attr('data-percent')
});
p.animate();
});
});
$('.counter').each(function() {
var $this = $(this),
countTo = $this.attr('data-count');
$({
countNum: $this.text()
}).animate({
countNum: countTo
}, {
duration: 2000,
easing: 'linear',
step: function() {
$this.text(Math.floor(this.countNum));
},
complete: function() {
$this.text(this.countNum);
}
});
});
.donut-chart svg {
pointer-events: none;
height: 100%;
stroke: #19a8ff;
}
.donut-chart svg path {
fill: none;
stroke-width: 35px;
stroke: #19a8ff;
}
.donut-chart {
width: 200px;
height: 200px;
display: inline-block;
left: 20%;
margin-bottom: 30px;
}
.donut-chart p {
margin: 0;
position: absolute;
left: 1%;
top: 25%;
font-family: 'Open Sans', sans-serif;
font-weight: bolder;
color: #222;
width: 100%;
text-align: center;
font-size: 2em;
}
.doughnut {
border: 35px solid #EAECEF;
border-radius: 100px;
height: 200px;
width: 200px;
position: absolute;
top: 0px;
z-index: -1;
}
答案 0 :(得分:0)
尝试此操作,只需检查用户滚动条是否包含在事件函数if()
中即可。
$(window).scroll(function() {
if ($('.donut-chart').is(':visible')) {
// do your stuff here, include function with p.animate();
}
});
,但请记住,这可能会降低网站的性能。您可以访问此网站进行改进,https://johnresig.com/blog/learning-from-twitter/。