本文介绍了两种实现效果：一种使用画布（canvas）标签/元素，另一种不用画布（canvas）标签/元素主要使用CSS实现。
使用画布（canvas）标签/元素实现，下面，在画布上，用JavaScript画两个红灯笼，并且红灯笼左右来回移动的源码：
<!DOCTYPE html> <html> <head> <title>红灯笼</title> <style> canvas { border: 1px solid black; background-color: blue; /*设置画布的背景色为蓝色*/ } </style> </head> <body> <!-- 设置画布宽高是500*300，单位是 px。 --> <canvas id="canvas" width="500" height="300"></canvas> <script> var canvas = document.getElementById('canvas'); var context = canvas.getContext('2d'); var angle1 = 0; var angle2 = 0; // 使第二个灯笼的初始角度与第一个灯笼不同 function drawLantern(x, y, radius, angle) { x += Math.sin(angle) * 20; // Draw the suspension line context.beginPath(); context.moveTo(x, y - radius / 4); context.lineTo(x, 0); context.stroke(); // Draw the top context.beginPath(); context.arc(x, y, radius / 4, 0, Math.PI * 2); context.fillStyle = 'gold'; context.fill(); context.stroke(); // Draw the main body context.beginPath(); context.arc(x, y, radius, 0, Math.PI * 2); context.fillStyle = 'red'; context.fill(); context.stroke(); // Draw the bottom context.beginPath(); context.arc(x, y + radius / 2, radius / 4, 0, Math.PI * 2); context.fillStyle = 'gold'; context.fill(); context.stroke(); // Draw the tassel context.beginPath(); context.moveTo(x, y + radius / 2); context.lineTo(x, y + radius * 1.2); context.moveTo(x - radius / 6, y + radius / 2); context.lineTo(x - radius / 6, y + radius * 1.2); context.moveTo(x + radius / 6, y + radius / 2); context.lineTo(x + radius / 6, y + radius * 1.2); context.stroke(); } function animate() { context.clearRect(0, 0, canvas.width, canvas.height); context.fillStyle = 'blue'; context.fillRect(0, 0, canvas.width, canvas.height); drawLantern(200, 200, 50, angle1); drawLantern(300, 200, 50, angle2); angle1 += 0.05; angle2 += 0.05; requestAnimationFrame(animate); } animate(); </script> </body> </html>
运行效果如下：
下面是另一种实现主要使用CSS实现，源码如下：
<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title>红灯笼效果</title> <!-- 灯笼代码↓，放在 head标签内--> <div class="deng-box2"> <div class="deng"> <div class="xian"> </div> <div class="deng-a"> <div class="deng-b"> <div class="deng-t">年</div> </div> </div> <div class="shui shui-a"> <div class="shui-c"> </div> <div class="shui-b"></div> </div> </div> </div> <div class="deng-box3"> <div class="deng"> <div class="xian"> </div> <div class="deng-a"> <div class="deng-b"> <div class="deng-t">新</div> </div> </div> <div class="shui shui-a"> <div class="shui-c"></div> <div class="shui-b"> </div> </div> </div> </div> <div class="deng-box1"> <div class="deng"> <div class="xian"> </div> <div class="deng-a"> <div class="deng-b"> <div class="deng-t">乐</div> </div> </div> <div class="shui shui-a"> <div class="shui-c"></div> <div class="shui-b"></div> </div> </div> </div> <div class="deng-box"> <div class="deng"> <div class="xian"> </div> <div class="deng-a"> <div class="deng-b"> <div class="deng-t">快</div> </div> </div> <div class="shui shui-a"> <div class="shui-c"> </div> <div class="shui-b"></div> </div> </div> </div> <style type="text/css"> .deng-box { position: fixed; top: -40px; right: 150px; z-index: 9999; pointer-events: none; } .deng-box1 { position: fixed; top: -30px; right: 10px; z-index: 9999; pointer-events: none } .deng-box2 { position: fixed; top: -40px; left: 150px; z-index: 9999; pointer-events: none } .deng-box3 { position: fixed; top: -30px; left: 10px; z-index: 9999; pointer-events: none } .deng-box1 .deng, .deng-box3 .deng { position: relative; width: 120px; height: 90px; margin: 50px; background: #d8000f; background: rgba(216, 0, 15, .8); border-radius: 50% 50%; -webkit-transform-origin: 50% -100px; -webkit-animation: swing 5s infinite ease-in-out; box-shadow: -5px 5px 30px 4px #fc903d } .deng { position: relative; width: 120px; height: 90px; margin: 50px; background: #d8000f; background: rgba(216, 0, 15, .8); border-radius: 50% 50%; -webkit-transform-origin: 50% -100px; -webkit-animation: swing 3s infinite ease-in-out; box-shadow: -5px 5px 50px 4px #fa6c00 } .deng-a { width: 100px; height: 90px; background: #d8000f; background: rgba(216, 0, 15, .1); margin: 12px 8px 8px 8px; border-radius: 50% 50%; border: 2px solid #dc8f03 } .deng-b { width: 45px; height: 90px; background: #d8000f; background: rgba(216, 0, 15, .1); margin: -4px 8px 8px 26px; border-radius: 50% 50%; border: 2px solid #dc8f03 } .xian { position: absolute; top: -20px; left: 60px; width: 2px; height: 20px; background: #dc8f03 } .shui-a { position: relative; width: 5px; height: 20px; margin: -5px 0 0 59px; -webkit-animation: swing 4s infinite ease-in-out; -webkit-transform-origin: 50% -45px; background: orange; border-radius: 0 0 5px 5px } .shui-b { position: absolute; top: 14px; left: -2px; width: 10px; height: 10px; background: #dc8f03; border-radius: 50% } .shui-c { position: absolute; top: 18px; left: -2px; width: 10px; height: 35px; background: orange; border-radius: 0 0 0 5px } .deng:before { position: absolute; top: -7px; left: 29px; height: 12px; width: 60px; content: " "; display: block; z-index: 999; border-radius: 5px 5px 0 0; border: solid 1px #dc8f03; background: orange; background: linear-gradient(to right, #dc8f03, orange, #dc8f03, orange, #dc8f03) } .deng:after { position: absolute; bottom: -7px; left: 10px; height: 12px; width: 60px; content: " "; display: block; margin-left: 20px; border-radius: 0 0 5px 5px; border: solid 1px #dc8f03; background: orange; background: linear-gradient(to right, #dc8f03, orange, #dc8f03, orange, #dc8f03) } .deng-t { font-family: 黑体, Arial, Lucida Grande, Tahoma, sans-serif; font-size: 3.2rem; color: #dc8f03; font-weight: 700; line-height: 85px; text-align: center } .night .deng-box, .night .deng-box1, .night .deng-t { background: 0 0 !important } @-moz-keyframes swing { 0% { -moz-transform: rotate(-10deg) } 50% { -moz-transform: rotate(10deg) } 100% { -moz-transform: rotate(-10deg) } } @-webkit-keyframes swing { 0% { -webkit-transform: rotate(-10deg) } 50% { -webkit-transform: rotate(10deg) } 100% { -webkit-transform: rotate(-10deg) } } </style> <!-- 灯笼代码↑--> </head> <body> </body> </html>
运行效果如下：
附录
为HTML网页添加喜庆气氛的诸多方法https://blog.csdn.net/cnds123/article/details/128865230
用CSS画了个灯笼https://juejin.cn/post/7051370971932033038
