当滚动到开机动画 [英] Start animation when scrolled to
本文介绍了当滚动到开机动画的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
我整天都在寻找一种简单的方法,使我的动画开始后,我已滚动到页面上的特定位置。
I have spend all day looking for an easy way to make my animation start after I have scrolled to a specific place on the page.
我的CSS
.animation {
width: 50%;
float: left;
position: relative;
-webkit-animation-name: test;
-webkit-animation-duration: 4s;
-webkit-animation-iteration-count: 3;
-webkit-animation-fill-mode: forwards;
animation-name: test;
animation-duration: 4s;
animation-iteration-count: 1;
animation-fill-mode: forwards; }
和我的HTML
<div class="container">
<div class="animation">
Content goes here...
</div>
</div>
我不知道如何使动画的开始,当我滚动到级集装箱。
I wonder how to make the animation start when I scroll to the class container.
推荐答案
的JavaScript
Javascript
var $window = $(window);
var $elem = $(".animation")
function isScrolledIntoView($elem, $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));
}
$(document).on("scroll", function () {
if (isScrolledIntoView($elem, $window)) {
$elem.addClass("animate")
}
});
HTML
<div class="container">
<div class="animation">Content goes here...</div>
</div>
CSS
.animation.animate {
animation: pulse 5s infinite;//change this to whatever you want
}
的jsfiddle 一起玩(不要忘记滚动)
JSFiddle to play with (don't forget to scroll)
这篇关于当滚动到开机动画的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持IT屋!
查看全文