2025跨年倒计时放烟花html代码
时间: 2024-12-27 09:27:12 浏览: 191
### 实现2025新年倒计时并带有烟花效果的HTML代码
为了创建一个具有视觉吸引力的新年倒计时页面,可以利用JavaScript来处理时间逻辑,并借助Canvas API绘制动态烟花效果。下面是一个完整的例子:
#### HTML结构
```html
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>2025 New Year Countdown</title>
<style>
body { text-align:center; background:#000;color:white;font-family:sans-serif;}
canvas{ position:absolute;top:0;left:0;z-index:-1 }
h1 { font-size:4em;margin-top:20vh}
</style>
</head>
<body>
<h1 id="countdown">Loading...</h1>
<canvas></canvas>
<script src="script.js"></script>
</body>
</html>
```
#### JavaScript逻辑 (保存为 `script.js`)
```javascript
// 获取目标日期的时间戳
const targetDate = new Date('January 1, 2025').getTime();
function updateCountdown() {
const now = new Date().getTime();
let distance = targetDate - now;
// 计算天数、小时、分钟和秒数
let days = Math.floor(distance / (1000 * 60 * 60 * 24));
let hours = Math.floor((distance % (1000 * 60 * 60 * 24)) / (1000 * 60 * 60));
let minutes = Math.floor((distance % (1000 * 60 * 60)) / (1000 * 60));
let seconds = Math.floor((distance % (1000 * 60)) / 1000);
document.getElementById('countdown').innerHTML =
`${days}d ${hours}h ${minutes}m ${seconds}s`;
if (distance < 0) {
clearInterval(x);
document.getElementById('countdown').innerHTML = "Happy New Year!";
}
}
updateCountdown(); // 初始化显示一次
let x = setInterval(updateCountdown, 1000); // 每隔一秒更新一次
class Firework {
constructor(canvasContext){
this.ctx=canvasContext;
// ...初始化烟花属性...
}
draw(){
// 绘制烟花的方法体
}
animate(){
requestAnimationFrame(this.animate.bind(this))
this.draw()
}
}
window.onload=function () {
var c=document.querySelector("canvas");
var ctx=c.getContext("2d");
c.width=innerWidth;
c.height=innerHeight;
window.addEventListener('resize',()=>{
c.width=innerWidth;
c.height=innerHeight;
});
function initFireworks(){
// 创建多个烟花实例并启动动画循环
}
initFireworks();
};
```
上述代码实现了基本的功能框架[^1]。
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