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這兩天不知道咋了，迷迷糊糊的，突然知道今天是520的我，急急忙忙趕出個(gè)程序（新手，代碼有點(diǎn)亂），發(fā)出來大家一起研究下（參考百度的）。
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>520</title>
<style>
html, body{padding:0px; margin:0px; background:#222; font-family: 'Karla', sans-serif; color:#FFF; height:100%; overflow:hidden;}
canvas {width:100%; height:100%;}
#text,#text_520{font-family:'楷體'; color:rgb(255,255,3); font-size:20px; position:fixed; left:10%; top:10%;}
#text_520{font-size:100px; top:50%; left:50%;}
img{position:fixed; top:0; left:0; width:100%;}
#last{font-size:12px; bottom:10px; left:50%; position:fixed;}
/*
@keyframes drop {
0% {
transform: translateY(-100px);
opacity: 0;
}
90% {
opacity: 1;
transform:translateY(10px);
}
100% {
transform:translateY(0px;)
}
}
*/
</style>
</head>
<body>
<canvas id="c"></canvas>
<div id="text"></div>
<div id="text_520">5 2 0</div>
<img src="./timg.jpg" class="img" />
<div id="last">版權(quán)所有：李曉珂</div>
<script type="text/javascript" src="./jquery-1.11.0.min.js"></script>
<script type="text/javascript">
function isIE(){
var u = navigator.userAgent;
if((u.indexOf("compatible") > -1 && u.indexOf("MSIE") > -1) || (u.indexOf("Trident") > -1 && u.indexOf("rv:11.0") > -1)){
alert("該瀏覽器暫不支持，請更換瀏覽器");
window.open('','_self');
window.close();
}
var audio = document.createElement("audio");
audio.setAttribute("src","./520-love.mp3");
audio.setAttribute("autoplay","autoplay");
}
isIE();
</script>
<script type="text/javascript">
var textArr = [
'I love three things in this world,',
'the sun ,the moon and you.',
'The sun for the day,',
'the moon for the night,',
'and you forever!',
'',
'If you were a teardrop,',
'in my eye,',
'for fear of losing you,',
'I would never cry.',
'And if the golden sun,',
'should cease to shine its light,',
'just one smile from you,',
'would make my whole world bright.'
];
var text_520 = document.getElementById('text_520');
var height = (window.innerHeight - text_520.offsetHeight) / 2;
var width = (window.innerWidth - text_520.offsetWidth) / 2;
text_520.style.top = height + 'px';
text_520.style.left = width + 'px';
$('#text_520').hide();
$('.img').hide();
var m = 0;
var n = 0;
var text = document.getElementById('text');
function typing(){
if(m <= textArr[n].length) {
text.innerHTML = text.innerHTML.substring(0,text.innerHTML.length-1) + textArr[n].substr(m++,1) + '_';
setTimeout(typing,250);
}else {
if(n < textArr.length-1){
text.innerHTML = text.innerHTML.substring(0,text.innerHTML.length-1) + "<br />_";
n++;
m = 0;
typing();
}else {
text.innerHTML = text.innerHTML.substring(0,text.innerHTML.length-1);
$('#text').fadeOut(5000);
setTimeout(function(){$('#text_520').fadeIn(5000);},7000);
setTimeout(function(){$('#text_520').fadeOut(5000); },7000);
setTimeout(function(){$('.img').fadeIn(50000);},15000)
}
}
}
setTimeout(typing,5000);
var ctx = document.querySelector('canvas').getContext('2d');
ctx.canvas.width = window.innerWidth;
ctx.canvas.height = window.innerHeight;
var sparks = [];
var fireworks = [];
var walker;
fireworks.pop();
var i = 10;
while(i--) fireworks.push(new Firework(Math.random()*window.innerWidth, window.innerHeight*Math.random()));
// setInterval(render, 1000/50);
render();
function render() {
setTimeout(render, 1000/50);
ctx.fillStyle = 'rgba(0, 0, 0, 0.2)';
ctx.fillRect(0, 0, ctx.canvas.width, ctx.canvas.height);
// 上升效果
for(var firework of fireworks) {
if(firework.dead) continue;
firework.move();
firework.draw();
}
// 綻放效果
for(var spark of sparks) {
if(spark.dead) continue;
spark.move();
spark.draw();
}
if(Math.random() < 0.1) fireworks.push(new Firework());
//ctx.height = ctx.height;
}
function Spark(x, y, color) {
this.x = x;
this.y = y;
this.dir = Math.random() * (Math.PI*2);
this.dead = false;
this.color = color;
this.speed = Math.random() * 3 + 3;
walker = new Walker({ radius: 20, speed: 0.25 });
this.gravity = 0.25;
this.dur = this.speed / 0.15;
this.move = function() {
this.dur--;
if(this.dur < 0) this.dead = true;
if(this.speed < 0) return;
if(this.speed > 0) this.speed -= 0.15;
walk = walker.step();
this.x += Math.cos(this.dir + walk) * this.speed;
this.y += Math.sin(this.dir + walk) * this.speed;
this.y += this.gravity;
this.gravity += 0.05;
}
this.draw = function() {
drawCircle(this.x, this.y, 2, this.color);
}
}
function Firework(x, y) {
this.xmove = Math.random()*2 - 1;
this.x = x || Math.random() * ctx.canvas.width;
this.y = y || ctx.canvas.height;
this.height = Math.random()*ctx.canvas.height/2;
this.dead = false;
this.color = randomColor();
this.move = function() {
this.x += this.xmove;
if(this.y > this.height) this.y -= 4;
else this.burst();
}
this.draw = function() {
drawCircle(this.x, this.y, 3, this.color)
}
this.burst = function() {
this.dead = true
i = 100; while(i--) sparks.push(new Spark(this.x, this.y, this.color));
sparks.pop();
}
}
setTimeout(function (){window.open('','_self').close();},175000);
/*
// 清除兩個(gè)數(shù)組
function clear(){
if(sparks!=null || fireworks!=null){
sparks.pop();
fireworks.pop();
}
var sparks = [];
var fireworks = [];
}
setInterval(clear,100);
*/
function drawCircle(x, y, radius, color) {
color = color || '#FFF';
ctx.fillStyle = color;
ctx.fillRect(x-radius/2, y-radius/2, radius, radius);
}
function randomColor(){
return ['#6ae5ab','#88e3b2','#36b89b','#7bd7ec','#66cbe1'][Math.floor(Math.random() * 5)];
}
function Walker(options){
this.step = function(){
this.direction = Math.sign(this.target) * this.speed
this.value += this.direction
this.target
? this.target -= this.direction
: (this.value)
? (this.wander)
? this.target = this.newTarget()
: this.target = -this.value
: this.target = this.newTarget()
return this.direction
}
this.newTarget = function() {
return Math.round(Math.random()*(this.radius*2)-this.radius)
}
this.start = 0
this.value = 0
this.radius = options.radius
this.target = this.newTarget()
this.direction = Math.sign(this.target)
this.wander = options.wander
this.speed = options.speed || 1
}
</script>
</body>
</html>
總結(jié)
以上所述是小編給大家介紹的JS實(shí)現(xiàn)520 簡單表白代碼，希望對大家有所幫助，如果大家有任何疑問請給我留言，小編會(huì)及時(shí)回復(fù)大家的。在此也非常感謝大家對億速云網(wǎng)站的支持！
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