一、前言
临近平安夜、圣诞节的到来，又是一波大好表白时机！身边的同学马上就要动手了，还不快行动起来，程序员也有属于我们的浪漫！这篇文章使用前端三大技术Html5、CSS、Js来实现圣诞动态表白特效。
二、表白特效演示及源码
1、圣诞表白特效
圣诞表白特效：仅含有一个HTML文件即可实现，可修改在一起的时间、表白美句等
html代码： <!doctype html> <html> <head> <meta charset="utf-8"> <title>小Z同学</title><!-- 这是网页标题 --> <style> body{ overflow: hidden; margin: 0; } h1{ position: fixed; top: 50%; left: 0; width: 100%; text-align: center; transform:translateY(-50%); font-family: 'Love Ya Like A Sister', cursive; font-size: 40px; color: #c70012; padding: 0 20px; } h1 span{ font-size:20px; } </style> </head> <body> <h1 id="h1"></h1> <canvas></canvas> <!--canvas 画布--> <script> var canvas = document.querySelector("canvas"), ctx = canvas.getContext("2d"); var ww,wh; function onResize(){ ww = canvas.width = window.innerWidth; wh = canvas.height = window.innerHeight; } ctx.strokeStyle = "red"; ctx.shadowBlur = 25; ctx.shadowColor = "hsla(0, 100%, 60%,0.5)"; var precision = 100; var hearts = []; var mouseMoved = false; function onMove(e){ mouseMoved = true; if(e.type === "touchmove"){ hearts.push(new Heart(e.touches[0].clientX, e.touches[0].clientY)); hearts.push(new Heart(e.touches[0].clientX, e.touches[0].clientY)); } else{ hearts.push(new Heart(e.clientX, e.clientY)); hearts.push(new Heart(e.clientX, e.clientY)); } } var Heart = function(x,y){ this.x = x || Math.random()*ww; this.y = y || Math.random()*wh; this.size = Math.random()*2 + 1; this.shadowBlur = Math.random() * 10; this.speedX = (Math.random()+0.2-0.6) * 8; this.speedY = (Math.random()+0.2-0.6) * 8; this.speedSize = Math.random()*0.05 + 0.01; this.opacity = 1; this.vertices = []; for (var i = 0; i < precision; i++) { var step = (i / precision - 0.5) * (Math.PI * 2); var vector = { x : (15 * Math.pow(Math.sin(step), 3)), y : -(13 * Math.cos(step) - 5 * Math.cos(2 * step) - 2 * Math.cos(3 * step) - Math.cos(4 * step)) } this.vertices.push(vector); } } Heart.prototype.draw = function(){ this.size -= this.speedSize; this.x += this.speedX; this.y += this.speedY; ctx.save(); ctx.translate(-1000,this.y); ctx.scale(this.size, this.size); ctx.beginPath(); for (var i = 0; i < precision; i++) { var vector = this.vertices[i]; ctx.lineTo(vector.x, vector.y); } ctx.globalAlpha = this.size; ctx.shadowBlur = Math.round((3 - this.size) * 10); ctx.shadowColor = "hsla(0, 100%, 60%,0.5)"; ctx.shadowOffsetX = this.x + 1000; ctx.globalCompositeOperation = "screen" ctx.closePath(); ctx.fill() ctx.restore(); }; function render(a){ requestAnimationFrame(render); hearts.push(new Heart()) ctx.clearRect(0,0,ww,wh); for (var i = 0; i < hearts.length; i++) { hearts[i].draw(); if(hearts[i].size <= 0){ hearts.splice(i,1); i--; } } } onResize(); window.addEventListener("mousemove", onMove); window.addEventListener("touchmove", onMove); window.addEventListener("resize", onResize); requestAnimationFrame(render); window.onload=function starttime(){ time(h1,'2017,7,9'); // 在一起的时间 ptimer = setTimeout(starttime,1000); // 添加计时器 } function time(obj,futimg){ var nowtime = new Date().getTime(); // 现在时间转换为时间戳 var futruetime = new Date(futimg).getTime(); // 未来时间转换为时间戳 var msec = nowtime-futruetime; // 毫秒 未来时间-现在时间 var time = (msec/1000); // 毫秒/1000 var day = parseInt(time/86400); // 天 24*60*60*1000 var hour = parseInt(time/3600)-24*day; // 小时 60*60 总小时数-过去的小时数=现在的小时数 var minute = parseInt(time%3600/60); // 分 -(day*24) 以60秒为一整份 取余 剩下秒数 秒数/60 就是分钟数 var second = parseInt(time%60); // 以60秒为一整份 取余 剩下秒数 obj.innerHTML="小Z同学<br>咱俩在一起的时间已经：<br>"+day+"天"+hour+"小时"+minute+"分"+second+"秒"+"了<br><span>圣诞之夜即将来临,真爱来了，我们要好好把握。<br>不管面临多大的压力,不管前面的路如何崎岖.<br>不管经历过什么,我仍坚信最浪漫的事就是和你一起慢慢变老.<br>相信中间的计时器,将永远继续下去,直至数据溢出.</span>" return true; } </script> </body> </html>
2、表白利器
表白利器：可替换照片，背景音乐等
3、表白电子相册
动态表白相册：可替换照片等，或者直接使用表情包也是一番风味。
4、表白动画
表白动画：动态展示照片和文字等，复古风哈哈
5、爱心表白
爱心表白：动态爱心，动画跟随鼠标旋转
