来源:未知 时间:2022-07-10 13:23 作者:小飞侠 阅读:次
[导读] js水波纹波动公式: angle+=0.01;varballScale=Math.sin(angle)*range; 效果如下: 全部代码如下: !DOCTYPEhtmlhtmlheadmetacharset=utf-8title波动/title/headbodyscripttype=text/javascriptvarball=document.createElement(div);ball.s...
js水波纹波动公式: angle += 0.01; var ballScale = Math.sin(angle) * range; 效果如下: 全部代码如下: <!DOCTYPE html> <html> <head> <meta charset="utf-8"> <title>波动</title> </head> <body> <script type="text/javascript"> var ball = document.createElement('div'); ball.setAttribute('style', 'width:100px;height:100px;background:red;border-radius:50%;position:absolute;'); document.body.appendChild(ball); var ball2 = document.createElement('div'); ball2.setAttribute('style', 'width:10px;height:10px;background:blue;border-radius:50%;position:absolute;'); document.body.appendChild(ball2); var ball3 = document.createElement('div'); ball3.setAttribute('style', 'width:10px;height:10px;background:green;border-radius:50%;position:absolute;'); document.body.appendChild(ball3); // 圆形 var ball4 = document.createElement('div'); ball4.setAttribute('style', 'width:15px;height:15px;background:red;border-radius:50%;position:absolute;'); document.body.appendChild(ball4); var angle = 0; var centX = 100; var centY = 100; var R = 60; var range = 0.5; function runing(){ // 1 angle += 0.01; // var ballX = centX + moveX; var ballScale = Math.sin(angle) * range; // ball.style.left = ballX + 'px'; // ball.style.top = ballY + 'px'; // ball.style.opacity = ballScale > 0 ? ballScale : 1+ballScale; ball.style.transform = 'scale('+ballScale+')'; // console.log(ballScale) window.requestAnimationFrame(runing); } runing(); </script> </body> </html> |
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