一个js写的爱心表白神器

效果图：

源代码：

<!doctype html>

<html>

<head>

<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>

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));

}

else{

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,'2017,7,4'); // 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

// console.log(hour+":"+minute+":"+second)

// alert(hour)

obj.innerHTML="大懒猪<br>咱俩在一起的时间已经：<br>"+day+"天"+hour+"小时"+minute+"分"+second+"秒"+"了<br><span>一时间不知道从哪说起,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>