(编辑:jimmy 日期: 2024/12/25 浏览:2)
本文实例为大家分享了js实现可爱的气泡特效的具体代码,供大家参考,具体内容如下
代码:
<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <title>Document</title> </head> <body> <canvas id="myCanvas"></canvas> <script> var c = document.getElementById("myCanvas"); c.width = 300; c.height = 500; var ctx = c.getContext('2d'); var arr = [] function sui() { var r = Math.floor(Math.random() * 6 + 5); var x = Math.floor(Math.random() * (c.width - 2 * r)) + r; var y = c.height - r; var opacity = Math.random(); var red = Math.floor(Math.random() * 256); var green = Math.floor(Math.random() * 256); var blue = Math.floor(Math.random() * 256); var deg = 0; var scale = Math.floor(Math.random() * 6 + 10); arr.push({ x, y, r, red, green, blue, opacity, deg, scale }) } setInterval(sui, 40); // 再实现变大和绘制 function dan() { ctx.clearRect(0, 0, c.width, c.height); arr.forEach((item, i) => { item.deg += 0.5; item.y -= item.deg; item.x += Math.sin(item.deg) * item.scale; if (item.y <= item.r) { arr.splice(i, 1); } else { ctx.beginPath(); ctx.arc(item.x, item.y, item.r, 0, Math.PI * 2); ctx.fillStyle = `rgba(${item.red},${item.green},${item.blue},${item.opacity})`; ctx.fill(); } }) } setInterval(dan, 100); </script> </body> </html>
以上就是本文的全部内容,希望对大家的学习有所帮助,也希望大家多多支持。