首先需要获取屏幕大小：
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var screenWidth = document.documentElement.clientWidth;var screenHeight = document.documentElement.clientHeight; |
接着可以定义动画（星星透明度）：
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@keyframes flash { 0%{opacity: 0} 25%{opacity: 0.25} 50%{opacity: 0.5} 75%{opacity: 0.75} 100%{opacity: 1} } |
全部代码如下：
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<!DOCTYPE html><html lang="en"><head> <meta charset="UTF-8"> <title>Title</title> <style> div{ width: 70px; height: 80px; background: url("./images/star.jpg") no-repeat; animation: flash 1s; } body{ background-color: black } @keyframes flash { 0%{opacity: 0} 25%{opacity: 0.25} 50%{opacity: 0.5} 75%{opacity: 0.75} 100%{opacity: 1} } </style></head><body><script> var screenWidth = document.documentElement.clientWidth; var screenHeight = document.documentElement.clientHeight; // 生产50个星星 for (let i = 0; i <50 ; i++) { var box=document.createElement('div'); document.body.appendChild(box); x=Math.random()*screenWidth; y=Math.random()*screenHeight; box.style.position='relative'; box.style.left=x+'px'; box.style.right=y+'px'; } boxList=document.getElementsByTagName("div"); for (let i = 0; i < boxList.length; i++) { boxList[i].onmouseover=function () { this.style.transform='scale(1.5,1.5)'; }; boxList[i].onmouseout=function () { this.style.transform='scale(1,1)'; }; }</script></body></html> |
效果如下：
以上就是js实现星星海特效的示例的详细内容，更多关于js 星星海特效的资料请关注服务器之家其它相关文章！
原文链接：https://www.cnblogs.com/manbaout/p/13233995.html
