新年将至，100行Html+css实现烟花特效陪你跨年（附春节对联）
| 阿里云国内75折 回扣 微信号：monov8 |
| 阿里云国际，腾讯云国际，低至75折。AWS 93折 免费开户实名账号 代冲值 优惠多多 微信号：monov8 飞机：@monov6 |
加特林版烟花
特点
根据鼠标点击的速度出现烟花像加特林一样哒哒哒希望朋友们在2022年能够像加特林一样疯狂输出打败所有的不甘与平凡向着自己的梦想努力前进着
html代码
<!DOCTYPE html>
<html>
<head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>html5鼠标点击页面放烟花特效</title>
<style>
html,body{height:100%;margin:0;padding:0}
ul,li{text-indent:0;text-decoration:none;margin:0;padding:0}
img{border:0}
body{background-color:#000;color:#999;font:100%/18px helvetica, arial, sans-serif}
canvas{cursor:crosshair;display:block;left:0;position:absolute;top:0;z-index:20}
</style>
</head>
<body>
<script type="text/javascript" src="js/jquery-2.0.0.min.js"></script>
<script type="text/javascript">
$(function(){
var Fireworks = function(){
var self = this;
var rand = function(rMi, rMa){return ~~((Math.random()*(rMa-rMi+1))+rMi);}
var hitTest = function(x1, y1, w1, h1, x2, y2, w2, h2){return !(x1 + w1 < x2 || x2 + w2 < x1 || y1 + h1 < y2 || y2 + h2 < y1);};
window.requestAnimFrame=function(){return window.requestAnimationFrame||window.webkitRequestAnimationFrame||window.mozRequestAnimationFrame||window.oRequestAnimationFrame||window.msRequestAnimationFrame||function(a){window.setTimeout(a,1E3/60)}}();
self.init = function(){
self.canvas = document.createElement('canvas');
self.canvas.width = self.cw = $(window).innerWidth();
self.canvas.height = self.ch = $(window).innerHeight();
self.particles = [];
self.partCount = 150;
self.fireworks = [];
self.mx = self.cw/2;
self.my = self.ch/2;
self.currentHue = 30;
self.partSpeed = 5;
self.partSpeedVariance = 10;
self.partWind = 50;
self.partFriction = 5;
self.partGravity = 1;
self.hueMin = 0;
self.hueMax = 360;
self.fworkSpeed = 4;
self.fworkAccel = 10;
self.hueVariance = 30;
self.flickerDensity = 25;
self.showShockwave = true;
self.showTarget = false;
self.clearAlpha = 25;
$(document.body).append(self.canvas);
self.ctx = self.canvas.getContext('2d');
self.ctx.lineCap = 'round';
self.ctx.lineJoin = 'round';
self.lineWidth = 1;
self.bindEvents();
self.canvasLoop();
self.canvas.onselectstart = function() {
return false;
};
};
self.createParticles = function(x,y, hue){
var countdown = self.partCount;
while(countdown--){
var newParticle = {
x: x,
y: y,
coordLast: [
{x: x, y: y},
{x: x, y: y},
{x: x, y: y}
],
angle: rand(0, 360),
speed: rand(((self.partSpeed - self.partSpeedVariance) <= 0) ? 1 : self.partSpeed - self.partSpeedVariance, (self.partSpeed + self.partSpeedVariance)),
friction: 1 - self.partFriction/100,
gravity: self.partGravity/2,
hue: rand(hue-self.hueVariance, hue+self.hueVariance),
brightness: rand(50, 80),
alpha: rand(40,100)/100,
decay: rand(10, 50)/1000,
wind: (rand(0, self.partWind) - (self.partWind/2))/25,
lineWidth: self.lineWidth
};
self.particles.push(newParticle);
}
};
self.updateParticles = function(){
var i = self.particles.length;
while(i--){
var p = self.particles[i];
var radians = p.angle * Math.PI / 180;
var vx = Math.cos(radians) * p.speed;
var vy = Math.sin(radians) * p.speed;
p.speed *= p.friction;
p.coordLast[2].x = p.coordLast[1].x;
p.coordLast[2].y = p.coordLast[1].y;
p.coordLast[1].x = p.coordLast[0].x;
p.coordLast[1].y = p.coordLast[0].y;
p.coordLast[0].x = p.x;
p.coordLast[0].y = p.y;
p.x += vx;
p.y += vy;
p.y += p.gravity;
p.angle += p.wind;
p.alpha -= p.decay;
if(!hitTest(0,0,self.cw,self.ch,p.x-p.radius, p.y-p.radius, p.radius*2, p.radius*2) || p.alpha < .05){
self.particles.splice(i, 1);
}
};
};
self.drawParticles = function(){
var i = self.particles.length;
while(i--){
var p = self.particles[i];
var coordRand = (rand(1,3)-1);
self.ctx.beginPath();
self.ctx.moveTo(Math.round(p.coordLast[coordRand].x), Math.round(p.coordLast[coordRand].y));
self.ctx.lineTo(Math.round(p.x), Math.round(p.y));
self.ctx.closePath();
self.ctx.strokeStyle = 'hsla('+p.hue+', 100%, '+p.brightness+'%, '+p.alpha+')';
self.ctx.stroke();
if(self.flickerDensity > 0){
var inverseDensity = 50 - self.flickerDensity;
if(rand(0, inverseDensity) === inverseDensity){
self.ctx.beginPath();
self.ctx.arc(Math.round(p.x), Math.round(p.y), rand(p.lineWidth,p.lineWidth+3)/2, 0, Math.PI*2, false)
self.ctx.closePath();
var randAlpha = rand(50,100)/100;
self.ctx.fillStyle = 'hsla('+p.hue+', 100%, '+p.brightness+'%, '+randAlpha+')';
self.ctx.fill();
}
}
};
};
self.createFireworks = function(startX, startY, targetX, targetY){
var newFirework = {
x: startX,
y: startY,
startX: startX,
startY: startY,
hitX: false,
hitY: false,
coordLast: [
{x: startX, y: startY},
{x: startX, y: startY},
{x: startX, y: startY}
],
targetX: targetX,
targetY: targetY,
speed: self.fworkSpeed,
angle: Math.atan2(targetY - startY, targetX - startX),
shockwaveAngle: Math.atan2(targetY - startY, targetX - startX)+(90*(Math.PI/180)),
acceleration: self.fworkAccel/100,
hue: self.currentHue,
brightness: rand(50, 80),
alpha: rand(50,100)/100,
lineWidth: self.lineWidth
};
self.fireworks.push(newFirework);
};
self.updateFireworks = function(){
var i = self.fireworks.length;
while(i--){
var f = self.fireworks[i];
self.ctx.lineWidth = f.lineWidth;
vx = Math.cos(f.angle) * f.speed,
vy = Math.sin(f.angle) * f.speed;
f.speed *= 1 + f.acceleration;
f.coordLast[2].x = f.coordLast[1].x;
f.coordLast[2].y = f.coordLast[1].y;
f.coordLast[1].x = f.coordLast[0].x;
f.coordLast[1].y = f.coordLast[0].y;
f.coordLast[0].x = f.x;
f.coordLast[0].y = f.y;
if(f.startX >= f.targetX){
if(f.x + vx <= f.targetX){
f.x = f.targetX;
f.hitX = true;
} else {
f.x += vx;
}
} else {
if(f.x + vx >= f.targetX){
f.x = f.targetX;
f.hitX = true;
} else {
f.x += vx;
}
}
if(f.startY >= f.targetY){
if(f.y + vy <= f.targetY){
f.y = f.targetY;
f.hitY = true;
} else {
f.y += vy;
}
} else {
if(f.y + vy >= f.targetY){
f.y = f.targetY;
f.hitY = true;
} else {
f.y += vy;
}
}
if(f.hitX && f.hitY){
self.createParticles(f.targetX, f.targetY, f.hue);
self.fireworks.splice(i, 1);
}
};
};
self.drawFireworks = function(){
var i = self.fireworks.length;
self.ctx.globalCompositeOperation = 'lighter';
while(i--){
var f = self.fireworks[i];
self.ctx.lineWidth = f.lineWidth;
var coordRand = (rand(1,3)-1);
self.ctx.beginPath();
self.ctx.moveTo(Math.round(f.coordLast[coordRand].x), Math.round(f.coordLast[coordRand].y));
self.ctx.lineTo(Math.round(f.x), Math.round(f.y));
self.ctx.closePath();
self.ctx.strokeStyle = 'hsla('+f.hue+', 100%, '+f.brightness+'%, '+f.alpha+')';
self.ctx.stroke();
if(self.showTarget){
self.ctx.save();
self.ctx.beginPath();
self.ctx.arc(Math.round(f.targetX), Math.round(f.targetY), rand(1,8), 0, Math.PI*2, false)
self.ctx.closePath();
self.ctx.lineWidth = 1;
self.ctx.stroke();
self.ctx.restore();
}
if(self.showShockwave){
self.ctx.save();
self.ctx.translate(Math.round(f.x), Math.round(f.y));
self.ctx.rotate(f.shockwaveAngle);
self.ctx.beginPath();
self.ctx.arc(0, 0, 1*(f.speed/5), 0, Math.PI, true);
self.ctx.strokeStyle = 'hsla('+f.hue+', 100%, '+f.brightness+'%, '+rand(25, 60)/100+')';
self.ctx.lineWidth = f.lineWidth;
self.ctx.stroke();
self.ctx.restore();
}
};
};
self.bindEvents = function(){
$(window).on('resize', function(){
clearTimeout(self.timeout);
self.timeout = setTimeout(function() {
self.canvas.width = self.cw = $(window).innerWidth();
self.canvas.height = self.ch = $(window).innerHeight();
self.ctx.lineCap = 'round';
self.ctx.lineJoin = 'round';
}, 100);
});
$(self.canvas).on('mousedown', function(e){
self.mx = e.pageX - self.canvas.offsetLeft;
self.my = e.pageY - self.canvas.offsetTop;
self.currentHue = rand(self.hueMin, self.hueMax);
self.createFireworks(self.cw/2, self.ch, self.mx, self.my);
$(self.canvas).on('mousemove.fireworks', function(e){
self.mx = e.pageX - self.canvas.offsetLeft;
self.my = e.pageY - self.canvas.offsetTop;
self.currentHue = rand(self.hueMin, self.hueMax);
self.createFireworks(self.cw/2, self.ch, self.mx, self.my);
});
});
$(self.canvas).on('mouseup', function(e){
$(self.canvas).off('mousemove.fireworks');
});
}
self.clear = function(){
self.particles = [];
self.fireworks = [];
self.ctx.clearRect(0, 0, self.cw, self.ch);
};
self.canvasLoop = function(){
requestAnimFrame(self.canvasLoop, self.canvas);
self.ctx.globalCompositeOperation = 'destination-out';
self.ctx.fillStyle = 'rgba(0,0,0,'+self.clearAlpha/100+')';
self.ctx.fillRect(0,0,self.cw,self.ch);
self.updateFireworks();
self.updateParticles();
self.drawFireworks();
self.drawParticles();
};
self.init();
}
var fworks = new Fireworks();
});
</script>
</body>
</html>
漫天飞雨烟花
特点
根据鼠标的速度和点击会绽放出烟花为何叫漫天飞雨呢因为这个特效特别像“霞”的R技能希望朋友们在这个不平凡的一年能够躲避所有不好的事情也能够克服各种困难像霞一样释放大招征服生活漫天飞雨。
HTML代码
<!DOCTYPE html>
<html dir="ltr" lang="zh-CN">
<head>
<meta charset="UTF-8" />
<meta name="viewport" content="width=device-width" />
<title>带交互功能的HTML5+JS烟花特效</title>
<style>
/* basic styles for black background and crosshair cursor */
body {
background: #000;
margin: 0;
}
canvas {
cursor: crosshair;
display: block;
}
</style>
</head>
<canvas id="canvas">Canvas is not supported in your browser.</canvas>
<script>
// when animating on canvas, it is best to use requestAnimationFrame instead of setTimeout or setInterval
// not supported in all browsers though and sometimes needs a prefix, so we need a shim
window.requestAnimFrame = ( function() {
return window.requestAnimationFrame ||
window.webkitRequestAnimationFrame ||
window.mozRequestAnimationFrame ||
function( callback ) {
window.setTimeout( callback, 1000 / 60 );
};
})();
// now we will setup our basic variables for the demo
var canvas = document.getElementById( 'canvas' ),
ctx = canvas.getContext( '2d' ),
// full screen dimensions
cw = window.innerWidth,
ch = window.innerHeight,
// firework collection
fireworks = [],
// particle collection
particles = [],
// starting hue
hue = 120,
// when launching fireworks with a click, too many get launched at once without a limiter, one launch per 5 loop ticks
limiterTotal = 5,
limiterTick = 0,
// this will time the auto launches of fireworks, one launch per 80 loop ticks
timerTotal = 80,
timerTick = 0,
mousedown = false,
// mouse x coordinate,
mx,
// mouse y coordinate
my;
// set canvas dimensions
canvas.width = cw;
canvas.height = ch;
// now we are going to setup our function placeholders for the entire demo
// get a random number within a range
function random( min, max ) {
return Math.random() * ( max - min ) + min;
}
// calculate the distance between two points
function calculateDistance( p1x, p1y, p2x, p2y ) {
var xDistance = p1x - p2x,
yDistance = p1y - p2y;
return Math.sqrt( Math.pow( xDistance, 2 ) + Math.pow( yDistance, 2 ) );
}
// create firework
function Firework( sx, sy, tx, ty ) {
// actual coordinates
this.x = sx;
this.y = sy;
// starting coordinates
this.sx = sx;
this.sy = sy;
// target coordinates
this.tx = tx;
this.ty = ty;
// distance from starting point to target
this.distanceToTarget = calculateDistance( sx, sy, tx, ty );
this.distanceTraveled = 0;
// track the past coordinates of each firework to create a trail effect, increase the coordinate count to create more prominent trails
this.coordinates = [];
this.coordinateCount = 3;
// populate initial coordinate collection with the current coordinates
while( this.coordinateCount-- ) {
this.coordinates.push( [ this.x, this.y ] );
}
this.angle = Math.atan2( ty - sy, tx - sx );
this.speed = 2;
this.acceleration = 1.05;
this.brightness = random( 50, 70 );
// circle target indicator radius
this.targetRadius = 1;
}
// update firework
Firework.prototype.update = function( index ) {
// remove last item in coordinates array
this.coordinates.pop();
// add current coordinates to the start of the array
this.coordinates.unshift( [ this.x, this.y ] );
// cycle the circle target indicator radius
if( this.targetRadius < 8 ) {
this.targetRadius += 0.3;
} else {
this.targetRadius = 1;
}
// speed up the firework
this.speed *= this.acceleration;
// get the current velocities based on angle and speed
var vx = Math.cos( this.angle ) * this.speed,
vy = Math.sin( this.angle ) * this.speed;
// how far will the firework have traveled with velocities applied?
this.distanceTraveled = calculateDistance( this.sx, this.sy, this.x + vx, this.y + vy );
// if the distance traveled, including velocities, is greater than the initial distance to the target, then the target has been reached
if( this.distanceTraveled >= this.distanceToTarget ) {
createParticles( this.tx, this.ty );
// remove the firework, use the index passed into the update function to determine which to remove
fireworks.splice( index, 1 );
} else {
// target not reached, keep traveling
this.x += vx;
this.y += vy;
}
}
// draw firework
Firework.prototype.draw = function() {
ctx.beginPath();
// move to the last tracked coordinate in the set, then draw a line to the current x and y
ctx.moveTo( this.coordinates[ this.coordinates.length - 1][ 0 ], this.coordinates[ this.coordinates.length - 1][ 1 ] );
ctx.lineTo( this.x, this.y );
ctx.strokeStyle = 'hsl(' + hue + ', 100%, ' + this.brightness + '%)';
ctx.stroke();
ctx.beginPath();
// draw the target for this firework with a pulsing circle
ctx.arc( this.tx, this.ty, this.targetRadius, 0, Math.PI * 2 );
ctx.stroke();
}
// create particle
function Particle( x, y ) {
this.x = x;
this.y = y;
// track the past coordinates of each particle to create a trail effect, increase the coordinate count to create more prominent trails
this.coordinates = [];
this.coordinateCount = 5;
while( this.coordinateCount-- ) {
this.coordinates.push( [ this.x, this.y ] );
}
// set a random angle in all possible directions, in radians
this.angle = random( 0, Math.PI * 2 );
this.speed = random( 1, 10 );
// friction will slow the particle down
this.friction = 0.95;
// gravity will be applied and pull the particle down
this.gravity = 1;
// set the hue to a random number +-20 of the overall hue variable
this.hue = random( hue - 20, hue + 20 );
this.brightness = random( 50, 80 );
this.alpha = 1;
// set how fast the particle fades out
this.decay = random( 0.015, 0.03 );
}
// update particle
Particle.prototype.update = function( index ) {
// remove last item in coordinates array
this.coordinates.pop();
// add current coordinates to the start of the array
this.coordinates.unshift( [ this.x, this.y ] );
// slow down the particle
this.speed *= this.friction;
// apply velocity
this.x += Math.cos( this.angle ) * this.speed;
this.y += Math.sin( this.angle ) * this.speed + this.gravity;
// fade out the particle
this.alpha -= this.decay;
// remove the particle once the alpha is low enough, based on the passed in index
if( this.alpha <= this.decay ) {
particles.splice( index, 1 );
}
}
// draw particle
Particle.prototype.draw = function() {
ctx. beginPath();
// move to the last tracked coordinates in the set, then draw a line to the current x and y
ctx.moveTo( this.coordinates[ this.coordinates.length - 1 ][ 0 ], this.coordinates[ this.coordinates.length - 1 ][ 1 ] );
ctx.lineTo( this.x, this.y );
ctx.strokeStyle = 'hsla(' + this.hue + ', 100%, ' + this.brightness + '%, ' + this.alpha + ')';
ctx.stroke();
}
// create particle group/explosion
function createParticles( x, y ) {
// increase the particle count for a bigger explosion, beware of the canvas performance hit with the increased particles though
var particleCount = 30;
while( particleCount-- ) {
particles.push( new Particle( x, y ) );
}
}
// main demo loop
function loop() {
// this function will run endlessly with requestAnimationFrame
requestAnimFrame( loop );
// increase the hue to get different colored fireworks over time
hue += 0.5;
// normally, clearRect() would be used to clear the canvas
// we want to create a trailing effect though
// setting the composite operation to destination-out will allow us to clear the canvas at a specific opacity, rather than wiping it entirely
ctx.globalCompositeOperation = 'destination-out';
// decrease the alpha property to create more prominent trails
ctx.fillStyle = 'rgba(0, 0, 0, 0.5)';
ctx.fillRect( 0, 0, cw, ch );
// change the composite operation back to our main mode
// lighter creates bright highlight points as the fireworks and particles overlap each other
ctx.globalCompositeOperation = 'lighter';
// loop over each firework, draw it, update it
var i = fireworks.length;
while( i-- ) {
fireworks[ i ].draw();
fireworks[ i ].update( i );
}
// loop over each particle, draw it, update it
var i = particles.length;
while( i-- ) {
particles[ i ].draw();
particles[ i ].update( i );
}
// launch fireworks automatically to random coordinates, when the mouse isn't down
if( timerTick >= timerTotal ) {
if( !mousedown ) {
// start the firework at the bottom middle of the screen, then set the random target coordinates, the random y coordinates will be set within the range of the top half of the screen
fireworks.push( new Firework( cw / 2, ch, random( 0, cw ), random( 0, ch / 2 ) ) );
timerTick = 0;
}
} else {
timerTick++;
}
// limit the rate at which fireworks get launched when mouse is down
if( limiterTick >= limiterTotal ) {
if( mousedown ) {
// start the firework at the bottom middle of the screen, then set the current mouse coordinates as the target
fireworks.push( new Firework( cw / 2, ch, mx, my ) );
limiterTick = 0;
}
} else {
limiterTick++;
}
}
// mouse event bindings
// update the mouse coordinates on mousemove
canvas.addEventListener( 'mousemove', function( e ) {
mx = e.pageX - canvas.offsetLeft;
my = e.pageY - canvas.offsetTop;
});
// toggle mousedown state and prevent canvas from being selected
canvas.addEventListener( 'mousedown', function( e ) {
e.preventDefault();
mousedown = true;
});
canvas.addEventListener( 'mouseup', function( e ) {
e.preventDefault();
mousedown = false;
});
// once the window loads, we are ready for some fireworks!
window.onload = loop;
</script>
花好月圆烟花
特点
根据鼠标的点击和移动会绽放烟花在这个花好月圆之夜你想到了什么哈哈哈是不是特别美好希望小伙伴们在新的一年能够找到心爱的人吧也希望有情人终成眷属争取努努力为我们代码届在增添一位小小程序猿。
html代码
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en">
<head>
<meta http-equiv="Content-Type" content="text/html;charset=gb2312">
<style>
body{margin:0;padding:0;overflow: hidden;}
.city{width:100%;position:fixed;bottom: 0px;z-index: 100;}
.city img{width: 100%;}
</style>
<title>html5夜景放烟花绽放动画效果</title>
</head>
<body onselectstart = "return false">
<div style="height:700px;overflow:hidden;">
<canvas id='cas' style="background-color:rgba(0,5,24,1);">浏览器不支持canvas</canvas>
<div class="city"><img src="img/city.png" alt="" /></div>
<img src="img/moon.png" alt="" id="moon" style="visibility: hidden;"/>
<div style="display:none">
<div class="shape">新年快乐</div>
<div class="shape">合家幸福</div>
<div class="shape">万事如意</div>
<div class="shape">心想事成</div>
<div class="shape">财源广进</div>
</div>
</div>
<script>
var canvas = document.getElementById("cas");
var ocas = document.createElement("canvas");
var octx = ocas.getContext("2d");
var ctx = canvas.getContext("2d");
ocas.width = canvas.width = window.innerWidth;
ocas.height = canvas.height = 700;
var bigbooms = [];
window.onload = function(){
initAnimate()
}
function initAnimate(){
drawBg();
lastTime = new Date();
animate();
}
var lastTime;
function animate(){
ctx.save();
ctx.fillStyle = "rgba(0,5,24,0.1)";
ctx.fillRect(0,0,canvas.width,canvas.height);
ctx.restore();
var newTime = new Date();
if(newTime-lastTime>500+(window.innerHeight-767)/2){
var random = Math.random()*100>2?true:false;
var x = getRandom(canvas.width/5 , canvas.width*4/5);
var y = getRandom(50 , 200);
if(random){
var bigboom = new Boom(getRandom(canvas.width/3,canvas.width*2/3) ,2,"#FFF" , {x:x , y:y});
bigbooms.push(bigboom)
}
else {
var bigboom = new Boom(getRandom(canvas.width/3,canvas.width*2/3) ,2,"#FFF" , {x:canvas.width/2 , y:200} , document.querySelectorAll(".shape")[parseInt(getRandom(0, document.querySelectorAll(".shape").length))]);
bigbooms.push(bigboom)
}
lastTime = newTime;
console.log(bigbooms)
}
stars.foreach(function(){
this.paint();
})
drawMoon();
bigbooms.foreach(function(index){
var that = this;
if(!this.dead){
this._move();
this._drawLight();
}
else{
this.booms.foreach(function(index){
if(!this.dead) {
this.moveTo(index);
}
else if(index === that.booms.length-1){
bigbooms[bigbooms.indexOf(that)] = null;
}
})
}
});
raf(animate);
}
function drawMoon(){
var moon = document.getElementById("moon");
var centerX = canvas.width-200 , centerY = 100 , width = 80;
if(moon.complete){
ctx.drawImage(moon , centerX , centerY , width , width )
}
else {
moon.onload = function(){
ctx.drawImage(moon ,centerX , centerY , width , width)
}
}
var index = 0;
for(var i=0;i<10;i++){
ctx.save();
ctx.beginPath();
ctx.arc(centerX+width/2 , centerY+width/2 , width/2+index , 0 , 2*Math.PI);
ctx.fillStyle="rgba(240,219,120,0.005)";
index+=2;
ctx.fill();
ctx.restore();
}
}
Array.prototype.foreach = function(callback){
for(var i=0;i<this.length;i++){
if(this[i]!==null) callback.apply(this[i] , [i])
}
}
var raf = window.requestAnimationFrame || window.webkitRequestAnimationFrame || window.mozRequestAnimationFrame || window.oRequestAnimationFrame || window.msRequestAnimationFrame || function (callback) { window.setTimeout(callback, 1000 / 60); };
canvas.onclick = function(){
var x = event.clientX;
var y = event.clientY;
var bigboom = new Boom(getRandom(canvas.width/3,canvas.width*2/3) ,2,"#FFF" , {x:x , y:y});
bigbooms.push(bigboom)
}
// canvas.addEventLisener("touchstart" , function(event){
// var touch = event.targetTouches[0];
// var x = event.pageX;
// var y = event.pageY;
// var bigboom = new Boom(getRandom(canvas.width/3,canvas.width*2/3) ,2,"#FFF" , {x:x , y:y});
// bigbooms.push(bigboom)
// })
var Boom = function(x,r,c,boomArea,shape){
this.booms = [];
this.x = x;
this.y = (canvas.height+r);
this.r = r;
this.c = c;
this.shape = shape || false;
this.boomArea = boomArea;
this.theta = 0;
this.dead = false;
this.ba = parseInt(getRandom(80 , 200));
}
Boom.prototype = {
_paint:function(){
ctx.save();
ctx.beginPath();
ctx.arc(this.x,this.y,this.r,0,2*Math.PI);
ctx.fillStyle = this.c;
ctx.fill();
ctx.restore();
},
_move:function(){
var dx = this.boomArea.x - this.x , dy = this.boomArea.y - this.y;
this.x = this.x+dx*0.01;
this.y = this.y+dy*0.01;
if(Math.abs(dx)<=this.ba && Math.abs(dy)<=this.ba){
if(this.shape){
this._shapBoom();
}
else this._boom();
this.dead = true;
}
else {
this._paint();
}
},
_drawLight:function(){
ctx.save();
ctx.fillStyle = "rgba(255,228,150,0.3)";
ctx.beginPath();
ctx.arc(this.x , this.y , this.r+3*Math.random()+1 , 0 , 2*Math.PI);
ctx.fill();
ctx.restore();
},
_boom:function(){
var fragNum = getRandom(30 , 200);
var style = getRandom(0,10)>=5? 1 : 2;
var color;
if(style===1){
color = {
a:parseInt(getRandom(128,255)),
b:parseInt(getRandom(128,255)),
c:parseInt(getRandom(128,255))
}
}
var fanwei = parseInt(getRandom(300, 400));
for(var i=0;i<fragNum;i++){
if(style===2){
color = {
a:parseInt(getRandom(128,255)),
b:parseInt(getRandom(128,255)),
c:parseInt(getRandom(128,255))
}
}
var a = getRandom(-Math.PI, Math.PI);
var x = getRandom(0, fanwei) * Math.cos(a) + this.x;
var y = getRandom(0, fanwei) * Math.sin(a) + this.y;
var radius = getRandom(0 , 2)
var frag = new Frag(this.x , this.y , radius , color , x , y );
this.booms.push(frag);
}
},
_shapBoom:function(){
var that = this;
putValue(ocas , octx , this.shape , 5, function(dots){
var dx = canvas.width/2-that.x;
var dy = canvas.height/2-that.y;
for(var i=0;i<dots.length;i++){
color = {a:dots[i].a,b:dots[i].b,c:dots[i].c}
var x = dots[i].x;
var y = dots[i].y;
var radius = 1;
var frag = new Frag(that.x , that.y , radius , color , x-dx , y-dy);
that.booms.push(frag);
}
})
}
}
function putValue(canvas , context , ele , dr , callback){
context.clearRect(0,0,canvas.width,canvas.height);
var img = new Image();
if(ele.innerHTML.indexOf("img")>=0){
img.src = ele.getElementsByTagName("img")[0].src;
imgload(img , function(){
context.drawImage(img , canvas.width/2 - img.width/2 , canvas.height/2 - img.width/2);
dots = getimgData(canvas , context , dr);
callback(dots);
})
}
else {
var text = ele.innerHTML;
context.save();
var fontSize =200;
context.font = fontSize+"px 宋体 bold";
context.textAlign = "center";
context.textBaseline = "middle";
context.fillStyle = "rgba("+parseInt(getRandom(128,255))+","+parseInt(getRandom(128,255))+","+parseInt(getRandom(128,255))+" , 1)";
context.fillText(text , canvas.width/2 , canvas.height/2);
context.restore();
dots = getimgData(canvas , context , dr);
callback(dots);
}
}
function imgload(img , callback){
if(img.complete){
callback.call(img);
}
else {
img.onload = function(){
callback.call(this);
}
}
}
function getimgData(canvas , context , dr){
var imgData = context.getImageData(0,0,canvas.width , canvas.height);
context.clearRect(0,0,canvas.width , canvas.height);
var dots = [];
for(var x=0;x<imgData.width;x+=dr){
for(var y=0;y<imgData.height;y+=dr){
var i = (y*imgData.width + x)*4;
if(imgData.data[i+3] > 128){
var dot = {x:x , y:y , a:imgData.data[i] , b:imgData.data[i+1] , c:imgData.data[i+2]};
dots.push(dot);
}
}
}
return dots;
}
function getRandom(a , b){
return Math.random()*(b-a)+a;
}
var maxRadius = 1 , stars=[];
function drawBg(){
for(var i=0;i<100;i++){
var r = Math.random()*maxRadius;
var x = Math.random()*canvas.width;
var y = Math.random()*2*canvas.height - canvas.height;
var star = new Star(x , y , r);
stars.push(star);
star.paint()
}
}
var Star = function(x,y,r){
this.x = x;this.y=y;this.r=r;
}
Star.prototype = {
paint:function(){
ctx.save();
ctx.beginPath();
ctx.arc(this.x , this.y , this.r , 0 , 2*Math.PI);
ctx.fillStyle = "rgba(255,255,255,"+this.r+")";
ctx.fill();
ctx.restore();
}
}
var focallength = 250;
var Frag = function(centerX , centerY , radius , color ,tx , ty){
this.tx = tx;
this.ty = ty;
this.x = centerX;
this.y = centerY;
this.dead = false;
this.centerX = centerX;
this.centerY = centerY;
this.radius = radius;
this.color = color;
}
Frag.prototype = {
paint:function(){
ctx.save();
ctx.beginPath();
ctx.arc(this.x , this.y , this.radius , 0 , 2*Math.PI);
ctx.fillStyle = "rgba("+this.color.a+","+this.color.b+","+this.color.c+",1)";
ctx.fill()
ctx.restore();
},
moveTo:function(index){
this.ty = this.ty+0.3;
var dx = this.tx - this.x , dy = this.ty - this.y;
this.x = Math.abs(dx)<0.1 ? this.tx : (this.x+dx*0.1);
this.y = Math.abs(dy)<0.1 ? this.ty : (this.y+dy*0.1);
if(dx===0 && Math.abs(dy)<=80){
this.dead = true;
}
this.paint();
}
}
</script>
</body>
</html>
心动一刹烟花
特点
这是最后一个烟花了我知道也许很少有人会看到这里可能很多人觉得有趣就直接点了收藏然后让它一直沉浸收藏夹里直至落灰最后的烟花其实不是送给你们的是送给我的送给自己这个太过糟糕的一年大起大落唉也许家家有本难念的经吧小的时候就有一个梦想能不能学会斑的无限月读让世界永远和平人们再无痛苦可看看那浩瀚的星空自己又何尝不是很迷茫人为何而生我现在所做的事情的又为何算了不说了说多了哈哈哈如果你能看到这的话我可以问你一个问题么
就你而然你觉得根据你现在的阅历和经历人活着的意义是什么呢可以在评论区告诉我么
Html
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>HTML5 Canvas五彩烟花动画特效</title>
<style>
*{
padding: 0;
margin: 0;
}
</style>
</head>
<body>
<div id="example"></div>
<script type="text/javascript" src="js/jquery.min.js"></script>
<script type="text/javascript" src="js/firework.js"></script>
<script type="text/javascript">
$(function(){
$("#example").fireworks({
width: "100%",
height: "100%"
});
});
</script>
</body>
</html>
js
(function ($) {
$.fn.fireworks = function(options){
options = options || {};
options.width = options.width || $(this).width();
options.height = options.height || $(this).height();
var fireworksField = this,
SCREEN_WIDTH = options.width,
SCREEN_HEIGHT = options.height,
rockets = [],
particles = [];
var canvas = document.createElement("canvas");
canvas.style.width = SCREEN_WIDTH + 'px';
canvas.style.height = SCREEN_HEIGHT + 'px';
canvas.width = SCREEN_WIDTH;
canvas.height = SCREEN_HEIGHT;
canvas.style.position = 'absolute';
canvas.style.top = '0px';
canvas.style.left = '0px';
var context = canvas.getContext('2d');
var mousePos = {};
var gravity = 0.05;
var raf;
$(fireworksField).append(canvas);
document.onmousemove = mouseMove;
setInterval(launch, 2000);
//setInterval(loop, 20);
raf = window.requestAnimationFrame(loop);
function mouseMove(ev){
ev = ev || window.event;
mousePos = mousePosition(ev);
}
function mousePosition(ev){
if(ev.pageX || ev.pageY){
return {x:ev.pageX, y:ev.pageY};
}
return {
x:ev.clientX + document.body.scrollLeft - document.body.clientLeft,
y:ev.clientY + document.body.scrollTop - document.body.clientTop
};
}
function launch() {
if (rockets.length < 10) {
var rocket = new Rocket(SCREEN_WIDTH/2);
rocket.v.x = Math.random() * 6 - 3;
rocket.v.y = Math.random() * -30 -4;
rocket.color = Math.floor(Math.random() * 360 / 10) * 10;
rockets.push(rocket);
}
}
function loop () {
var existRockets = [];
var existParticles = [];
if (SCREEN_WIDTH != window.innerWidth) {
canvas.width = SCREEN_WIDTH = window.innerWidth;
}
if (SCREEN_HEIGHT != window.innerHeight) {
canvas.height = SCREEN_HEIGHT = window.innerHeight;
}
context.fillStyle = "rgba(0,0,0,0.05)";
context.fillRect(0, 0, SCREEN_WIDTH, SCREEN_HEIGHT);
//context.save();
for (var i = 0; i < rockets.length; i ++) {
rockets[i].update();
rockets[i].render(context);
//explosion rules
//1.above the 4/5 screen
//2.close to the mouse
//3.1% random chance above the 1/2 screen
var distance = Math.sqrt(Math.pow(mousePos.x - rockets[i].pos.x, 2) + Math.pow(mousePos.y - rockets[i].pos.y, 2));
var randomChance = (rockets[i].pos.y < SCREEN_HEIGHT/2)? (Math.random() * 100 <= 1) : false;
if (rockets[i].pos.y < SCREEN_HEIGHT/5 || distance <= 50 || randomChance) {
rockets[i].explode();
}else{
existRockets.push(rockets[i]);
}
}
rockets = existRockets;
for (var i = 0; i < particles.length; i ++) {
particles[i].update();
if (particles[i].exist()) {
particles[i].render(context);
existParticles.push(particles[i]);
}
}
particles = existParticles;
//context.restore();
raf = window.requestAnimationFrame(loop);
}
//the particles object
function Particle (pos) {
this.pos = {
x : pos? pos.x:0,
y : pos? pos.y:0
};
this.v = {
x : 0,
y : 0
};
this.resistance = 0.005;
this.size = 5;
this.shrink = 0.99;
this.alpha = 1;
this.fade = 0.97;
this.color = "";
}
Particle.prototype.update = function () {
this.v.x += this.resistance;
this.v.y -= this.resistance;
//gravity
this.v.y += gravity;
this.pos.x += this.v.x;
this.pos.y += this.v.y;
this.size *= this.shrink;
this.alpha *= this.fade;
}
Particle.prototype.render = function () {
var x = this.pos.x,
y = this.pos.y,
r = this.size/2;
var gradient = context.createRadialGradient(x, y, 0.1, x, y, r);
gradient.addColorStop(0, "rgba(255, 255, 255, "+ this.alpha +")");
gradient.addColorStop(0.9, "hsla(" + this.color + ", 100%, 50%, 1)");
gradient.addColorStop(1, "rgba(0, 0, 0, 1)");
context.fillStyle = gradient;
context.beginPath();
context.arc(x, y, r, 0, 2 * Math.PI, true);
context.closePath();
context.fill();
}
Particle.prototype.exist = function () {
if (this.alpha >= 0.02 && this.size > 0.8) {
return true;
}else{
return false;
}
}
//the rocket object
function Rocket (x) {
Particle.apply(this, [{
x : x,
y : SCREEN_HEIGHT
}]);
}
(function () {
var Super = function () {};
Super.prototype = Particle.prototype;
Rocket.prototype = new Super();
})();
Rocket.prototype.constructor = Rocket;
Rocket.prototype.update = function () {
this.pos.x += this.v.x;
this.pos.y += this.v.y;
}
Rocket.prototype.render = function (context) {
var x = this.pos.x,
y = this.pos.y,
r = this.size/2;
var gradient = context.createRadialGradient(x, y, 0.1, x, y, r);
gradient.addColorStop(0, "#ffff00");
gradient.addColorStop(1, "rgba(0, 0, 0, 1)");
context.fillStyle = gradient;
context.beginPath();
context.arc(x, y, r, 0, 2 * Math.PI, true);
context.closePath();
context.fill();
}
Rocket.prototype.explode = function () {
var count = getGaussianDistributionNumber(240, 20);
for (var i = 0; i <= count; i++) {
var particle = new Particle(this.pos);
var angle = Math.random() * Math.PI * 2;
var speed = getGaussianDistributionNumber(2.5, 0.3);
particle.size = 3;
particle.v.x = Math.cos(angle) * speed;
particle.v.y = Math.sin(angle) * speed;
particle.color = this.color;
particles.push(particle);
}
}
function getGaussianDistributionNumber (mean, std_dev) {
var U1 = -Math.random() + 1;
var U2 = -Math.random() + 1;
var R = Math.sqrt(-2 * Math.log(U2));
var a = 2 * Math.PI * U1;
var Z = R * Math.cos(a);
return mean + (Z * std_dev);
}
}
}(jQuery));
春节对联
哎小伙伴们这个对联确确实实是总给你们的希望你们在新的一年码到成功
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
<title>春联</title>
</head>
<body>
<style>
.font{ font-family: 隶书; font-size: 36pt; color: #000000; font-weight: bold;
background-color: #FF0000 }
.font1{ font-family: 隶书; font-size: 36pt; color: #000000; font-weight: bold }
-->
</style>
<div style="position: absolute; top: 80; left: 217; width: 320; height: 386; font-size: 240pt; color: red">◆</div>
<div style="position: absolute; top: 195; left: 305; width: 160; height: 160; font-size: 110pt; font-family: 隶书">淦</div>
<div style="position: absolute; top: 10; left: 120; width: 527; height: 388">
<table border="0" cellpadding="0" cellspacing="0" width="527" height="231">
<tr>
<td height="21" width="46"></td>
<td height="21" width="449">
</td>
<td height="21" width="51"></td>
</tr>
<tr>
<td height="211" width="46" align="center" class="font">
<p align="center">
废<br>
寝<br>
忘<br>
食<br>
编<br>
程<br>
序<br>
<td height="211" width="449" align="center"></td>
<td height="211" width="51" align="center" class="font">
闻<br>
机<br>
起<br>
早<br>
保<br>
运<br>
维<br>
</tr>
</table>
</div>
</body>
</html>
<!-- css 代码-->
.couplet_ad
/* 底部固定*/
{position:fixed;bottom:auto; top:0; width: 120px; height: 230px; z-index:99999; margin-top:158px;}
html .couplet_ad
/* IE6 底部固定*/
{_position:absolute;
_bottom:auto;
_top:expression(eval(document.documentElement.scrollTop));}
.couplet_ad a{ display:block; cursor:pointer;}
#ad_left{ left: 0px;}
#ad_right{ right: 0px;}
<!-- html代码 -->
<!-- 对联广告左边 -->
<div class="couplet_ad" id="ad_left">
<a target="_blank" href=""><img src="dl.jpg"></a>
<a onClick="ad_left();">关闭</a>
</div>
<!-- 对联广告右边 -->
<div class="couplet_ad" id="ad_right">
<a target="_blank" href=""><img src="dl.jpg"></a>
<a onClick="ad_right();">关闭</a>
</div>
<!-- js关闭按钮代码 -->
<script language="javascript">
function ad_left(){
document.getElementById('ad_left').style.display="none";
}
function ad_right(){
document.getElementById('ad_right').style.display="none";
}
</script>