本篇文章给大家分享的是有关使用CSS3怎么实现一个粒子动画效果，小编觉得挺实用的，因此分享给大家学习，希望大家阅读完这篇文章后可以有所收获，话不多说，跟着小编一起来看看吧。
按钮点击粒子动画
<div class="button"> <div class="button-text">确认</div></div>由于按钮是梯形的，之前代码在button选择器上面已经加了伪类来实现梯形了，所以我们只能再套一层元素（button-text）来实现粒子。
.button-text { position: relative; width: 100%; border-radius: 4px; border: none; cursor: pointer;}.button-text:before, .button-text:after { position: absolute; content: ''; display: block; width: 140%; height: 100%; left: -20%; z-index: -1000; background-repeat: no-repeat;}.button-text:before { display: none; top: -75%; background-image: radial-gradient(circle, #fff 20%, transparent 20%), radial-gradient(circle, transparent 20%, #fff 20%, transparent 30%), radial-gradient(circle, #fff 20%, transparent 20%), radial-gradient(circle, #fff 20%, transparent 20%), radial-gradient(circle, transparent 10%, #fff 15%, transparent 20%), radial-gradient(circle, #fff 20%, transparent 20%), radial-gradient(circle, #fff 20%, transparent 20%), radial-gradient(circle, #fff 20%, transparent 20%), radial-gradient(circle, #fff 20%, transparent 20%); background-size: 10% 10%, 20% 20%, 15% 15%, 20% 20%, 18% 18%, 10% 10%, 15% 15%, 10% 10%, 18% 18%;}.button-text:after { display: none; bottom: -75%; background-image: radial-gradient(circle, #fff 20%, transparent 20%), radial-gradient(circle, #fff 20%, transparent 20%), radial-gradient(circle, transparent 10%, #fff 15%, transparent 20%), radial-gradient(circle, #fff 20%, transparent 20%), radial-gradient(circle, #fff 20%, transparent 20%), radial-gradient(circle, #fff 20%, transparent 20%), radial-gradient(circle, #fff 20%, transparent 20%); background-size: 15% 15%, 20% 20%, 18% 18%, 20% 20%, 15% 15%, 10% 10%, 20% 20%;}.button-text:active { transform: scale(0.9);}在 button-text 的伪类元素上面，添加 background-image ,并用径向渐变 radial-gradient 画出多个圆作为粒子。
transform: scale(0.9) ，是鼠标点击时，缩放 button-text 元素。
大家应该都看到默认伪类元素是 display: none; 隐藏的。所有当我们点击时，需要添加一个选择器，让其显示出来，并执行动画。
js来监听点击事件，点击后添加 animate 选择器。
var animateButton = function(e) { e.preventDefault; e.target.classList.remove('animate'); e.target.classList.add('animate'); setTimeout(function(){ e.target.classList.remove('animate'); },700);};var classname = document.getElementsByClassName("button-text");for (var i = 0; i < classname.length; i++) { classname[i].addEventListener('click', animateButton, false);}然后我们添加CSS，开始动画
.button-text.animate:before { display: block; animation: topBubbles ease-in-out 0.75s forwards;}.button-text.animate:after { display: block; animation: bottomBubbles ease-in-out 0.75s forwards;}@keyframes topBubbles { 0% { background-position: 5% 90%, 10% 90%, 10% 90%, 15% 90%, 25% 90%, 25% 90%, 40% 90%, 55% 90%, 70% 90%; } 50% { background-position: 0% 80%, 0% 20%, 10% 40%, 20% 0%, 30% 30%, 22% 50%, 50% 50%, 65% 20%, 90% 30%; } 100% { background-position: 0% 70%, 0% 10%, 10% 30%, 20% -10%, 30% 20%, 22% 40%, 50% 40%, 65% 10%, 90% 20%; background-size: 0% 0%, 0% 0%, 0% 0%, 0% 0%, 0% 0%, 0% 0%; }}@keyframes bottomBubbles { 0% { background-position: 10% -10%, 30% 10%, 55% -10%, 70% -10%, 85% -10%, 70% -10%, 70% 0%; } 50% { background-position: 0% 80%, 20% 80%, 45% 60%, 60% 100%, 75% 70%, 95% 60%, 105% 0%; } 100% { background-position: 0% 90%, 20% 90%, 45% 70%, 60% 110%, 75% 80%, 95% 70%, 110% 10%; background-size: 0% 0%, 0% 0%, 0% 0%, 0% 0%, 0% 0%, 0% 0%; }}我们通过 background-position 改变背景的位置，用 background-size 改变大小，来形成动画效果。
这样就形成按钮点击粒子动画效果了。
同理，我们可以在背景上面添加同样的粒子效果。代码基本可以copy。
背景粒子效果
.king:before { position: absolute; content: ''; display: block; width: 100%; height: 100%; top: 0; z-index: 1; background-repeat: no-repeat; opacity: 0.4;}.king:before { background-image: radial-gradient(circle, #fff 20%, transparent 20%), radial-gradient(circle, transparent 20%, #fff 20%, transparent 30%), radial-gradient(circle, #fff 20%, transparent 20%), radial-gradient(circle, #fff 20%, transparent 20%), radial-gradient(circle, transparent 10%, #fff 15%, transparent 20%), radial-gradient(circle, #fff 20%, transparent 20%), radial-gradient(circle, #fff 20%, transparent 20%), radial-gradient(circle, #fff 20%, transparent 20%), radial-gradient(circle, #fff 20%, transparent 20%); background-size: 10% 10%, 12% 12%, 5% 5%, 12% 12%, 5% 5%, 10% 10%, 5% 5%, 10% 10%, 5% 5%; display: block; animation: topBubbles ease-in-out 3s forwards infinite;}以上就是使用CSS3怎么实现一个粒子动画效果，小编相信有部分知识点可能是我们日常工作会见到或用到的。希望你能通过这篇文章学到更多知识。更多详情敬请关注编程网行业资讯频道。
