情人节快乐-html代码-BFW代码库

情人节快乐

代码语言：html

所属分类：表白

下面为部分代码预览，完整代码请点击下载或在bfwstudio webide中打开

<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">

<style>
/********************
  Common
********************/

html, body {
  height: 100%;
  width: 100%;
  font-family: Helvetica, verdana, monospace;
  color: #FF0383;
  font-size: 100%;
  padding: 0;
  margin: 0;
  letter-spacing: 0.2rem;
  overflow: hidden;
  background: #ffdde1;
}

a {
  color: #FF0383;
  text-decoration: none;
}

h1 {
  font-size: 1.6rem;
}

h2 {
  padding: 0.8rem 0 0 0;
}

p {
  padding: 0.8rem 0;
  font-size: 0.8rem;
}

div#main {
  position: absolute;
  top: 0;
  left: 0;
  padding: 1.6rem;
}

p#loading {
  position: absolute;
  bottom: 0;
  right: 0;
  padding: 1.6rem;
}

/********************
  Contents
********************/

canvas#canvas {
  background: #ffdde1;
}
</style>

</head>
<body>



<div id="contents">
<canvas id="canvas">This browser cannot use a canvas.</canvas>
</div>

<script>
(function () {
  'use strict';
  window.addEventListener('load', function () {
    var canvas = document.getElementById('canvas');

    if (!canvas || !canvas.getContext) {
      return false;
    }

    /********************
        Animation
      ********************/

    window.requestAnimationFrame =
    window.requestAnimationFrame ||
    window.mozRequestAnimationFrame ||
    window.webkitRequestAnimationFrame ||
    window.msRequestAnimationFrame ||
    function (cb) {
      setTimeout(cb, 17);
    };

    /********************
         Random Number
       ********************/

    function rand(min, max) {
      return Math.floor(Math.random() * (max - min + 1) + min);
    }

    /********************
        Var
      ********************/

    // canvas 
    var ctx = canvas.getContext('2d');
    var X = canvas.width = window.innerWidth;
    var Y = canvas.height = window.innerHeight;
    var mouseX = X / 2;
    var mouseY = Y / 2;

    // heart
    var miniHeartNum = 100;
    var miniHearts = [];

    var rad = Math.PI / 180;
    var GRAVITY = 0.01;

    /********************
                          Text
                        ********************/

    var fontSize = '64px Arial';

    if (X < 768) {
      fontSize = '24px Arial';
    }

    function drawtext() {
      ctx.fillStyle = 'rgb(255, 3, 131)';
      ctx.globalAlpha = 0.7;
      ctx.textBaseline = 'middle';
      ctx.font = fontSize;
      ctx.textAlign = 'center';
      ctx.fillText("Happy Valentine's Day", X / 2, Y / 2);
    }

    /********************
        Particle
      ********************/

    // var
    var particleNum = 50;
    var particles = [];
    var particleColors = ['rgb(0, 172, 176)', 'rgb(253, 191, 16)', 'rgb(237, 26, 36)', 'rgb(241, 87, 49)', 'rgb(246, 149, 153)'];

    function Particle(ctx, x, y, r) {
      this.ctx = ctx;
      this.init(x, y, r);
    }

    Particle.prototype.init = function (x, y, r) {
      this.x = x;
      this.y = y;
      this.r = r;
      this.l = rand(0, 5);
      this.a = 0.5;
      this.c = particleColors[rand(0, particleColors.length - 1)];
      this.v = {
        x: rand(-2, 2) * Math.random(),
        y: rand(-2, 2) * Math.random() };

    };

    Particle.prototype.updateParams = function () {
      this.l -= 0.1;
      this.r += 0.1;
    };

    Particle.prototype.updatePosition = function () {
      this.x += this.v.x;
      this.y += this.v.y;
    };

    Particle.prototype.wrapPosition = function () {
      if (this.l < 0) {
        var miniHeart = new MiniHeart(ctx, this.x, this.y, this.r, this.c);
        miniHearts.push(miniHeart);
        this.x = mouseX;
        this.y = mouseY;
        this.l = rand(10, 20);
        this.r = 1;
      }
    };

    Particle.prototype.draw = function () {
      ctx = this.ctx;
      ctx.save();
      ctx.beginPath();
      ctx.globalAlpha = this.a;
      ctx.fillStyle = this.c;
      ctx.arc(this.x, this.y, this.r, Math.PI * 2, false);
      ctx.fill();
      ctx.closePath();
      ctx.restore();
    };

    Particle.........完整代码请登录后点击上方下载按钮下载查看