vielhuber/index.html

## index.html
<!DOCTYPE html>
<html lang="de">
    <head>
        <meta charset="utf-8" />
        <meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=5, minimum-scale=1" />
        <title>.</title>
        <script>
            class Confetti {
                constructor() {
                    this.confettiConfig = {
                        particleCount: 500, // set max confetti count
                        particleSpeed: 3, //set the particle animation speed
                        particleColors: [
                            'DodgerBlue',
                            'OliveDrab',
                            'Gold',
                            'Pink',
                            'SlateBlue',
                            'LightBlue',
                            'Violet',
                            'PaleGreen',
                            'SteelBlue',
                            'SandyBrown',
                            'Chocolate',
                            'Crimson'
                        ],
                        streamingConfetti: false,
                        animationTimer: null,
                        particles: [],
                        waveAngle: 0
                    };
                }

                init() {
                    document.addEventListener('DOMContentLoaded', () => {
                        document.querySelector('.start').addEventListener('click', e => {
                            this.startConfetti();
                            e.preventDefault();
                        });
                        document.querySelector('.stop').addEventListener('click', e => {
                            this.stopConfetti();
                            e.preventDefault();
                        });
                    });
                }

                resetParticle(particle, width, height) {
                    particle.color =
                        this.confettiConfig.particleColors[
                            (Math.random() * this.confettiConfig.particleColors.length) | 0
                        ];
                    particle.x = Math.random() * width;
                    particle.y = Math.random() * height - height;
                    particle.diameter = Math.random() * 10 + 5;
                    particle.tilt = Math.random() * 10 - 10;
                    particle.tiltAngleIncrement = Math.random() * 0.07 + 0.05;
                    particle.tiltAngle = 0;
                    return particle;
                }

                startConfetti() {
                    let width = window.innerWidth;
                    let height = window.innerHeight;
                    window.requestAnimFrame = (function () {
                        return (
                            window.requestAnimationFrame ||
                            window.webkitRequestAnimationFrame ||
                            window.mozRequestAnimationFrame ||
                            window.oRequestAnimationFrame ||
                            window.msRequestAnimationFrame ||
                            function (callback) {
                                return window.setTimeout(callback, 16.6666667);
                            }
                        );
                    })();
                    let canvas = document.getElementById('confetti-canvas');
                    if (canvas === null) {
                        canvas = document.createElement('canvas');
                        canvas.setAttribute('id', 'confetti-canvas');
                        canvas.setAttribute(
                            'style',
                            'display:block;z-index:999999;pointer-events:none;position:fixed;top:0;left:0;'
                        );
                        document.body.appendChild(canvas);
                        canvas.width = width;
                        canvas.height = height;
                        window.addEventListener(
                            'resize',
                            () => {
                                canvas.width = window.innerWidth;
                                canvas.height = window.innerHeight;
                            },
                            true
                        );
                    }
                    let context = canvas.getContext('2d');
                    while (this.confettiConfig.particles.length < this.confettiConfig.particleCount)
                        this.confettiConfig.particles.push(this.resetParticle({}, width, height));
                    this.confettiConfig.streamingConfetti = true;
                    if (this.confettiConfig.animationTimer === null) {
                        let runAnimation = () => {
                            context.clearRect(0, 0, window.innerWidth, window.innerHeight);
                            if (this.confettiConfig.particles.length === 0) this.confettiConfig.animationTimer = null;
                            else {
                                this.updateParticles();
                                this.drawParticles(context);
                                this.confettiConfig.animationTimer = requestAnimFrame(runAnimation);
                            }
                        };
                        runAnimation();
                    }
                }

                stopConfetti() {
                    this.confettiConfig.streamingConfetti = false;
                }

                removeConfetti() {
                    this.stopConfetti();
                    this.confettiConfig.particles = [];
                }

                toggleConfetti() {
                    if (this.confettiConfig.streamingConfetti) this.stopConfetti();
                    else this.startConfetti();
                }

                drawParticles(context) {
                    let particle;
                    let x;
                    for (let i = 0; i < this.confettiConfig.particles.length; i++) {
                        particle = this.confettiConfig.particles[i];
                        context.beginPath();
                        context.lineWidth = particle.diameter;
                        context.strokeStyle = particle.color;
                        x = particle.x + particle.tilt;
                        context.moveTo(x + particle.diameter / 2, particle.y);
                        context.lineTo(x, particle.y + particle.tilt + particle.diameter / 2);
                        context.stroke();
                    }
                }

                updateParticles() {
                    let width = window.innerWidth;
                    let height = window.innerHeight;
                    let particle;
                    this.confettiConfig.waveAngle += 0.01;
                    for (let i = 0; i < this.confettiConfig.particles.length; i++) {
                        particle = this.confettiConfig.particles[i];
                        if (!this.confettiConfig.streamingConfetti && particle.y < -15) particle.y = height + 100;
                        else {
                            particle.tiltAngle += particle.tiltAngleIncrement;
                            particle.x += Math.sin(this.confettiConfig.waveAngle);
                            particle.y +=
                                (Math.cos(this.confettiConfig.waveAngle) +
                                    particle.diameter +
                                    this.confettiConfig.particleSpeed) *
                                0.5;
                            particle.tilt = Math.sin(particle.tiltAngle) * 15;
                        }
                        if (particle.x > width + 20 || particle.x < -20 || particle.y > height) {
                            if (
                                this.confettiConfig.streamingConfetti &&
                                this.confettiConfig.particles.length <= this.confettiConfig.particleCount
                            )
                                this.resetParticle(particle, width, height);
                            else {
                                this.confettiConfig.particles.splice(i, 1);
                                i--;
                            }
                        }
                    }
                }
            }
            let e = new Confetti();
            e.init();
        </script>
        <style>
            * {
                box-sizing: border-box;
                margin: 0;
                padding: 0;
            }
        </style>
    </head>
    <body>
        <button class="start">START🎉</button>
        <button class="stop">STOP🎉</button>
    </body>
</html>
	<!DOCTYPE html>
	<html lang="de">
	<head>
	<meta charset="utf-8" />
	<meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=5, minimum-scale=1" />
	<title>.</title>
	<script>
	class Confetti {
	constructor() {
	this.confettiConfig = {
	particleCount: 500, // set max confetti count
	particleSpeed: 3, //set the particle animation speed
	particleColors: [
	'DodgerBlue',
	'OliveDrab',
	'Gold',
	'Pink',
	'SlateBlue',
	'LightBlue',
	'Violet',
	'PaleGreen',
	'SteelBlue',
	'SandyBrown',
	'Chocolate',
	'Crimson'
	],
	streamingConfetti: false,
	animationTimer: null,
	particles: [],
	waveAngle: 0
	};
	}

	init() {
	document.addEventListener('DOMContentLoaded', () => {
	document.querySelector('.start').addEventListener('click', e => {
	this.startConfetti();
	e.preventDefault();
	});
	document.querySelector('.stop').addEventListener('click', e => {
	this.stopConfetti();
	e.preventDefault();
	});
	});
	}

	resetParticle(particle, width, height) {
	particle.color =
	this.confettiConfig.particleColors[
	(Math.random() * this.confettiConfig.particleColors.length) \| 0
	];
	particle.x = Math.random() * width;
	particle.y = Math.random() * height - height;
	particle.diameter = Math.random() * 10 + 5;
	particle.tilt = Math.random() * 10 - 10;
	particle.tiltAngleIncrement = Math.random() * 0.07 + 0.05;
	particle.tiltAngle = 0;
	return particle;
	}

	startConfetti() {
	let width = window.innerWidth;
	let height = window.innerHeight;
	window.requestAnimFrame = (function () {
	return (
	window.requestAnimationFrame \|\|
	window.webkitRequestAnimationFrame \|\|
	window.mozRequestAnimationFrame \|\|
	window.oRequestAnimationFrame \|\|
	window.msRequestAnimationFrame \|\|
	function (callback) {
	return window.setTimeout(callback, 16.6666667);
	}
	);
	})();
	let canvas = document.getElementById('confetti-canvas');
	if (canvas === null) {
	canvas = document.createElement('canvas');
	canvas.setAttribute('id', 'confetti-canvas');
	canvas.setAttribute(
	'style',
	'display:block;z-index:999999;pointer-events:none;position:fixed;top:0;left:0;'
	);
	document.body.appendChild(canvas);
	canvas.width = width;
	canvas.height = height;
	window.addEventListener(
	'resize',
	() => {
	canvas.width = window.innerWidth;
	canvas.height = window.innerHeight;
	},
	true
	);
	}
	let context = canvas.getContext('2d');
	while (this.confettiConfig.particles.length < this.confettiConfig.particleCount)
	this.confettiConfig.particles.push(this.resetParticle({}, width, height));
	this.confettiConfig.streamingConfetti = true;
	if (this.confettiConfig.animationTimer === null) {
	let runAnimation = () => {
	context.clearRect(0, 0, window.innerWidth, window.innerHeight);
	if (this.confettiConfig.particles.length === 0) this.confettiConfig.animationTimer = null;
	else {
	this.updateParticles();
	this.drawParticles(context);
	this.confettiConfig.animationTimer = requestAnimFrame(runAnimation);
	}
	};
	runAnimation();
	}
	}

	stopConfetti() {
	this.confettiConfig.streamingConfetti = false;
	}

	removeConfetti() {
	this.stopConfetti();
	this.confettiConfig.particles = [];
	}

	toggleConfetti() {
	if (this.confettiConfig.streamingConfetti) this.stopConfetti();
	else this.startConfetti();
	}

	drawParticles(context) {
	let particle;
	let x;
	for (let i = 0; i < this.confettiConfig.particles.length; i++) {
	particle = this.confettiConfig.particles[i];
	context.beginPath();
	context.lineWidth = particle.diameter;
	context.strokeStyle = particle.color;
	x = particle.x + particle.tilt;
	context.moveTo(x + particle.diameter / 2, particle.y);
	context.lineTo(x, particle.y + particle.tilt + particle.diameter / 2);
	context.stroke();
	}
	}

	updateParticles() {
	let width = window.innerWidth;
	let height = window.innerHeight;
	let particle;
	this.confettiConfig.waveAngle += 0.01;
	for (let i = 0; i < this.confettiConfig.particles.length; i++) {
	particle = this.confettiConfig.particles[i];
	if (!this.confettiConfig.streamingConfetti && particle.y < -15) particle.y = height + 100;
	else {
	particle.tiltAngle += particle.tiltAngleIncrement;
	particle.x += Math.sin(this.confettiConfig.waveAngle);
	particle.y +=
	(Math.cos(this.confettiConfig.waveAngle) +
	particle.diameter +
	this.confettiConfig.particleSpeed) *
	0.5;
	particle.tilt = Math.sin(particle.tiltAngle) * 15;
	}
	if (particle.x > width + 20 \|\| particle.x < -20 \|\| particle.y > height) {
	if (
	this.confettiConfig.streamingConfetti &&
	this.confettiConfig.particles.length <= this.confettiConfig.particleCount
	)
	this.resetParticle(particle, width, height);
	else {
	this.confettiConfig.particles.splice(i, 1);
	i--;
	}
	}
	}
	}
	}
	let e = new Confetti();
	e.init();
	</script>
	<style>
	* {
	box-sizing: border-box;
	margin: 0;
	padding: 0;
	}
	</style>
	</head>
	<body>
	<button class="start">START🎉</button>
	<button class="stop">STOP🎉</button>
	</body>
	</html>