js实现新年倒计时点击放烟花快乐代码-html代码-BFW代码库

代码语言：html

所属分类：其他

代码描述：js实现新年倒计时点击放烟花快乐代码

下面为部分代码预览，完整代码请点击下载或在bfwstudio webide中打开

<!DOCTYPE html>
<html lang="en">

<head>

    <meta charset="UTF-8">

    <style>
    @import url("https://fonts.googleapis.com/css?family=Caveat");
     
    </style>



    <style>
        html, body {
            margin: 0;
            padding: 0;
            overflow: hidden;
            background: #000;
         
            background-image: url(//repo.bfw.wiki/bfwrepo/image/604a26e01dd36.png) ;
            background-repeat: no-repeat;
            background-size: cover;
         
        }

        canvas {
            mix-blend-mode: lighten;
            cursor: pointer;
        }

        #hero {
            display: inline;
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            mix-blend-mode: color-dodge;
        }

        #year {
            font-size: 30vw;
            color: #d0d0d0;
            font-weight: bold;
        }

        #timeleft {
            color: #fbfbfb;
            font-size: 2.5vw;
            text-align: center;
          
        }
    </style>


</head>

<body>
    <div id="hero">
        <div id="year">2022</div>
        <div id="timeleft"></div>
    </div>
  
    <script>
    var vector = {
    _x: 1,
    _y: 0,

    create: function(x, y) {
        var obj = Object.create(this);
        obj.setX(x);
        obj.setY(y);
        return obj;
    },

    duplicate: function() {
        return vector.create(this._x, this._y);
    },

    random: function(maxX, maxY, minX, minY){
        var x = Math.random() * (maxX-minX) + minX;
        var y = Math.random() * (maxY-minY) + minY;
        return vector.create(x,y);
    },

    setX: function(value) {
        this._x = value;
    },

    getX: function() {
        return this._x;
    },

    setY: function(value) {
        this._y = value;
    },

    getY: function() {
        return this._y;
    },

    bounds: function(size, mX, mY){
        var mapsize = size;
        if(this._x  > mX + mapsize){ this._x = -size; }
        if(this._x < -mapsize){ this._x = mX + size; }

        if(this._y > mY + mapsize){ this._y = -size; }
        if(this._y < -mapsize){ this._y = mY + size; }
    },

    outOfBounds: function(sx, sy, ex, ey){
        if(this._x < sx){ return true; }
        if(this._x > ex){ return true; }

        if(this._y < sy){ return true; }
        if(this._y > ey){ return true; }
    },

    setAngle: function(angle) {
        var length = this.getLength();
        this._x = Math.cos(angle) * length;
        this._y = Math.sin(angle) * length;
    },

    getAngle: function() {
        return Math.atan2(this._y, this._x);
    },

    angleTo: function(p2) {
        return Math.atan2(p2.getY() - this._y, p2.getX() - this._x);
    },

    distanceTo: function(p2) {
        var dx = p2.getX() - this._x,
            dy = p2.getY() - this._y;

        return Math.sqrt(dx * dx + dy * dy);
    },

    setLength: function(length) {
        var angle = this.getAngle();
        this._x = Math.cos(angle) * length;
        this._y = Math.sin(angle) * length;
    },

    gravitateTo: function(p2, mass, mymass) {
        var grav = Vector.create(0, 0),
            dist = mypos.distanceTo(p2);

        //grav.setLength(mass / (dist * dist));
        grav.setLength((G*mass*mymass) / (dist * dist));
        grav.setAngle(this.angleTo(p2));
        this.addTo(grav);
    },

    getLength: function() {
        return Math.sqrt(this._x * this._x + this._y * this._y);
    },

    maxSpeed: function(s){
        if(this.getLength() > s){
            this.setLength(s);
        }
    },

    add: function(v2) {
        return vector.create(this._x + v2.getX(), this._y + v2.getY());
    },

    subtract: function(v2) {
        return vector.create(this._x - v2.getX(), this._y - v2.getY());
    },

    multiply: function(val) {
        return vector.create(this._x * val, this._y * val);
    },

    divide: function(val) {
        return vector.create(this._x / val, this._y / val);
    },

    addTo: function(v2) {
        this._x += v2.getX();
        this._y += v2.getY();
    },

    subtractFrom: function(v2) {
        this._x -= v2.getX();
        this._y -= v2.getY();
    },

    multiplyBy: function(val) {
        this._x *= val;
        this._y *= val;
    },

    divideBy: function(val) {
        this._x /= val;
        this._y /= val;
    },

    normalize: function(scale){
        var norm = Math.sqrt(this._x * this._x + this._y * this._y);
        if (norm != 0) {
            return vector.create(
                scale * this._x / norm,
                scale * this._y / norm
            );
        }
    },

    dot: function(v2){
        return this._x * v2._x + this._y * v2._y;
    }
};
        const canvas = document.createElement('canvas'),
            context = canvas.getContext('2d'),
            width = canvas.width = window.innerWidth,
            height = canvas.height = window.innerHeight,
            HalfPI = Math.PI / 2,
            gravity = vector.create(0, 0.35),
            year = document.getElementById('year'),
            timeleft = document.getElementById('timeleft'),
            newyear = new Date('01/01/2022');
    
        let objects = [],
            startFireworks = false,
            newYearAlready = false;
    
        function renderTimeLeft() {
            let date = new Date();
    
            let delta = Math.abs(newyear - date) / 1000;
    
            let hours = Math.floor(delta / 3600) % 24;
            delta -= hours * 3600;
    
            let minutes = Math.floor(delta / 60) % 60;
            delta -= minutes * 60;
    
            let seconds = Math.floor(delta % 60) + 1;
    
            let string = '';
    
            let DaysLeft = Math.floor((newyear - date) / (1000 * 60 * 60 * 24)),
                HoursLeft = `${hours} ${hours > 1 ? 'hours' : 'hour'}`,
                MinutesLeft = `${minutes} ${minutes > 1 ? 'minutes' : 'minute'}`,
                SecondsLeft = `${seconds} ${seconds > 1 ? 'seconds' : 'second'}`;
    
            if (hours > 0) string = `${HoursLeft} &amp; ${MinutesLeft}`;else
            if (minutes > 0) string = `${MinutesLeft} &amp; ${SecondsLeft}`;else
                string = `${SecondsLeft}`;
    
            if (DaysLeft > 0) str.........完整代码请登录后点击上方下载按钮下载查看