首页圣诞树带圣诞歌有雪花的html代码

圣诞树带圣诞歌有雪花的html代码

时间: 2023-12-26 13:27:56 浏览: 92

圣诞树html网页代码.zip

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以下是一个带有圣诞歌和雪花效果的HTML代码： ```html <!DOCTYPE html> <html> <head> <title>圣诞树</title> <style> body { background-color: blue; } canvas { position: absolute; top: 0; left: 0; } </style> </head> <body> <canvas id="snowCanvas"></canvas> <h1>圣诞树</h1> <pre> We wish you a Merry Christmas, We wish you a Merry Christmas, We wish you a Merry Christmas, And a Happy New Year! </pre> <script> // 雪花效果 var canvas = document.getElementById("snowCanvas"); var ctx = canvas.getContext("2d"); var width = window.innerWidth; var height = window.innerHeight; canvas.width = width; canvas.height = height; var snowflakes = []; function Snowflake() { this.x = Math.random() * width; this.y = Math.random() * height; this.radius = Math.random() * 3 + 1; this.speed = Math.random() * 3 + 1; this.opacity = Math.random(); } Snowflake.prototype.update = function() { this.y += this.speed; if (this.y > height) { this.y = -this.radius; } } Snowflake.prototype.draw = function() { ctx.beginPath(); ctx.arc(this.x, this.y, this.radius, 0, Math.PI * 2); ctx.fillStyle = "white"; ctx.globalAlpha = this.opacity; ctx.fill(); } function createSnowflakes() { for (var i = 0; i < 100; i++) { snowflakes.push(new Snowflake()); } } function drawSnowflakes() { ctx.clearRect(0, 0, width, height); for (var i = 0; i < snowflakes.length; i++) { snowflakes[i].update(); snowflakes[i].draw(); } requestAnimationFrame(drawSnowflakes); } createSnowflakes(); drawSnowflakes(); </script> </body> </html> ```

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