<!DOCTYPE html> <html> <head> <meta charset="utf-8"> <title></title> <style> .barrage { position: absolute; top: 0; white-space: nowrap; font-size: 20px; color: white; text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5); animation: moveRight 10s linear; } @keyframes moveRight { from { left: 100%; } to { left: -100%; } } </style> </head> <body> <div> <input id="msg"> <button onclick="sendmsg()">点击发送</button> </div> <div id="barrageContainer"></div> <script> function sendmsg() { var msg = document.getElementById("msg").value; var divEl = document.createElement("div"); divEl.innerText = msg; divEl.classList.add("barrage"); divEl.style.top = Math.floor(Math.random() * window.innerHeight) + "px"; document.getElementById("barrageContainer").appendChild(divEl); } </script> </body> </html>请对上述代码进行每一部分的注解

请对上述代码进行每一部分的注解 - CSDN文库", "datePublished": "2023-12-04", "keywords": "

请对上述代码进行每一部分的注解", "description": "文章浏览阅读132次。上述代码是一个简单的弹幕效果的网页示例，下面是每一部分的注解：```html