HTML5七夕情人节表白网页制作【爱情树-Html5实现唯美表白动画代码】HTML+CSS+JavaScript浪漫告白 求婚必备
以下是一个简化的HTML和JavaScript代码示例,用于创建一棵生长动画的爱情树:
<!DOCTYPE html>
<html>
<head>
<title>爱情树</title>
<style>
body, html {
margin: 0;
padding: 0;
height: 100%;
}
canvas {
display: block;
}
</style>
</head>
<body>
<canvas id="love"></canvas>
<script>
const canvas = document.getElementById('love');
const ctx = canvas.getContext('2d');
const width = canvas.width = window.innerWidth;
const height = canvas.height = window.innerHeight;
const tree = new Tree(width / 2, height / 2, 100);
function animate() {
requestAnimationFrame(animate);
ctx.fillStyle = 'rgba(255, 255, 255, 0.3)';
ctx.fillRect(0, 0, width, height);
tree.grow();
tree.show();
}
class Tree {
constructor(x, y, len) {
this.x = x;
this.y = y;
this.len = len;
this.angle = 0;
}
grow() {
this.angle += 0.05;
}
show() {
ctx.strokeStyle = 'green';
ctx.lineWidth = 5;
ctx.beginPath();
ctx.moveTo(this.x, this.y);
ctx.lineTo(this.x + this.len * Math.cos(this.angle), this.y + this.len * Math.sin(this.angle));
ctx.stroke();
}
}
animate();
</script>
</body>
</html>
这段代码定义了一个Tree
类,它有一个生长动画。在animate
函数中,我们请求浏览器进行动画渲染,并在每一帧上清除背景,更新树的生长状态,并绘制它。这个简单的例子展示了如何使用HTML5的<canvas>
元素和JavaScript创建交互式动画。
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