[Plugin] Especial de Natal - Nevar

[Guest Duevo]

Olá,
Achei legal postar um código onde no site comece a cair varias balinhas brancas (similares a neve).

 

Espero que goste!

 

É só criar um arquivo chamado 'nevar.js' e colar o código!

 

Lembre-se de coloca-lo nas páginas.

<script type="text/javascript" src="js/nevar.js"></script>

 

 

CÓDIGO:

 

var snowStorm=function(e,d){
    function g(a,d){isNaN(d)&&(d=0);
    return Math.random()*a+d
    }
    function o(){
        e.setTimeout(function(){a.start(true)},20);
        a.events.remove(i?d:e,"mousemove",o)
    }
    function r(){
        if(!a.excludeMobile||!s)a.freezeOnBlur?a.events.add(i?d:e,"mousemove",o):o();
        a.events.remove(e,"load",r)}this.autoStart=true;
        this.flakesMax=128;
        this.flakesMaxActive=64;
        this.animationInterval=33;
        this.excludeMobile=true;
        this.flakeBottom=null;
        this.followMouse=true;
        this.snowColor="#fff";
        this.snowCharacter="•";
        this.snowStick=true;
        this.targetElement=null;
        this.useMeltEffect=true;
        this.usePositionFixed=this.useTwinkleEffect=false;
        this.freezeOnBlur=true;
        this.flakeRightOffset=this.flakeLeftOffset=0;
        this.flakeHeight=this.flakeWidth=8;
        this.vMaxX=5;
        this.vMaxY=4;
        this.zIndex=0;
        var a=this,
            y=this,
            i=navigator.userAgent.match(/msie/i),
            z=navigator.userAgent.match(/msie 6/i),
            A=navigator.appVersion.match(/windows 98/i),
            s=navigator.userAgent.match(/mobile|opera m(ob|in)/i),B=i&&d.compatMode==="BackCompat",t=s||B||z,h=null,
            k=null,
            j=null,
            m=null,
            u=null,
            v=null,
            p=1,
            n=false,
            q;
            a:{
                try{
                    d.createElement("div").style.opacity="0.5"
                }catch(C){
                    q=false;
                    break a
                }q=true
            }
            var w=false,
            x=d.createDocumentFragment();
            this.timers=[];
            this.flakes=[];
            this.active=this.disabled=false;
            this.meltFrameCount=20;
            this.meltFrames=[];
            this.events=function(){
                function a(b){
                    var b=f.call(b),
                    c=b.length;
                    l?(b[1]="on"+b[1],c>3&&b.pop()):c===3&&b.push(false);
                    return b
                }
                function d(a,c){
                    var e=a.shift(),
                    f=[b[c]];
                    if(l)e[f](a[0],a[1]);
                    else e[f].apply(e,a)
                }
                var l=!e.addEventListener&&e.attachEvent,
                f=Array.prototype.slice,
                b={
                    add:l?"attachEvent":"addEventListener",
                    remove:l?"detachEvent":"removeEventListener"
                };return{
                    add:function(){
                        d(a(arguments),"add")
                    },remove:function(){
                        d(a(arguments),"remove")
                    }
                }
            }();
            this.randomizeWind=function(){
                var c;c=g(a.vMaxX,0.2);
                    u=parseInt(g(2),10)===1?c*-1:c;v=g(a.vMaxY,0.2);
                    if(this.flakes)for(c=0;c<this.flakes.length;c++)this.flakes[c].active&&this.flakes[c].setVelocities()
            };this.scrollHandler=function(){
                var c;
                    m=a.flakeBottom?0:parseInt(e.scrollY||d.documentElement.scrollTop||d.body.scrollTop,10);
                    isNaN(m)&&(m=0);
                    if(!n&&!a.flakeBottom&&a.flakes)for(c=a.flakes.length;c--;)a.flakes[c].active===0&&a.flakes[c].stick()};
                    this.resizeHandler=function(){
                        e.innerWidth||e.innerHeight?(h=e.innerWidth-16-a.flakeRightOffset,j=a.flakeBottom?a.flakeBottom:e.innerHeight):(h=(d.documentElement.clientWidth||d.body.clientWidth||d.body.scrollWidth)-(!i?8:0)-a.flakeRightOffset,j=a.flakeBottom?a.flakeBottom:d.documentElement.clientHeight||d.body.clientHeight||d.body.scrollHeight);k=parseInt(h/2,10)
                    };
                    this.resizeHandlerAlt=function(){
                        h=a.targetElement.offsetLeft+a.targetElement.offsetWidth-a.flakeRightOffset;
                        j=a.flakeBottom?a.flakeBottom:a.targetElement.offsetTop+a.targetElement.offsetHeight;
                        k=parseInt(h/2,10)};this.freeze=function(){var c;if(a.disabled)return false;
                        else a.disabled=1;
                        for(c=a.timers.length;c--;)clearInterval(a.timers[c])};
                        this.resume=function(){if(a.disabled)a.disabled=0;
                        else return false;
                        a.timerInit()};
                        this.toggleSnow=function(){
                            a.flakes.length?(a.active=!a.active,a.active?(a.show(),a.resume()):(a.stop(),a.freeze())):a.start()};
                            this.stop=function(){
                                var c;
                                this.freeze();
                                for(c=this.flakes.length;c--;)this.flakes[c].o.style.display="none";
                                a.events.remove(e,"scroll",a.scrollHandler);
                                a.events.remove(e,"resize",a.resizeHandler);
                                a.freezeOnBlur&&(i?(a.events.remove(d,"focusout",a.freeze),a.events.remove(d,"focusin",a.resume)):(a.events.remove(e,"blur",a.freeze),
                                a.events.remove(e,"focus",a.resume)))};
                                this.show=function(){
                                    var a;for(a=this.flakes.length;a--;)this.flakes[a].o.style.display="block"};
                                    this.SnowFlake=function(a,e,l,f){
                                        var b=this;
                                        this.type=e;
                                        this.x=l||parseInt(g(h-20),10);
                                        this.y=!isNaN(f)?f:-g(j)-12;
                                        this.vY=this.vX=null;
                                        this.vAmpTypes=[1,1.2,1.4,1.6,1.8];
                                        this.vAmp=this.vAmpTypes[this.type];
                                        this.melting=false;
                                        this.meltFrameCount=a.meltFrameCount;
                                        this.meltFrames=a.meltFrames;
                                        this.twinkleFrame=this.meltFrame=0;
                                        this.active=1;
                                        this.fontSize=10+this.type/5*10;
                                        this.o=d.createElement("div");
                                        this.o.innerHTML=a.snowCharacter;
                                        this.o.style.color=a.snowColor;
                                        this.o.style.position=n?"fixed":"absolute";
                                        this.o.style.width=a.flakeWidth+"px";
                                        this.o.style.height=a.flakeHeight+"px";
                                        this.o.style.fontFamily="arial,verdana";
                                        this.o.style.cursor="default";
                                        this.o.style.overflow="hidden";
                                        this.o.style.fontWeight="normal";
                                        this.o.style.zIndex=a.zIndex;x.appendChild(this.o);
                                        this.refresh=function(){
                                            if(isNaN(b.x)||isNaN(b.y))return false;
                                            b.o.style.left=b.x+"px";
                                            b.o.style.top=b.y+"px"};
                                            this.stick=function(){
                                                t||a.targetElement!==d.documentElement&&a.targetElement!==d.body?b.o.style.top=j+m-a.flakeHeight+"px":a.flakeBottom?b.o.style.top=a.flakeBottom+"px":(b.o.style.display="none",
                                                b.o.style.top="auto",
                                                b.o.style.bottom="0px",
                                                b.o.style.position="fixed",
                                                b.o.style.display="block")
                                            };
                                            this.vCheck=function(){
                                                if(b.vX>=0&&b.vX<0.2)b.vX=0.2;
                                                else if(b.vX<0&&b.vX>-0.2)b.vX=-0.2;
                                                if(b.vY>=0&&b.vY<0.2)b.vY=0.2};
                                                this.move=function(){
                                                    var d=b.vX*p;
                                                    b.x+=d;b.y+=b.vY*b.vAmp;
                                                    if(b.x>=h||h-b.x<a.flakeWidth)b.x=0;
                                                    else if(d<0&&b.x-a.flakeLeftOffset<-a.flakeWidth)b.x=h-a.flakeWidth-1;
                                                    b.refresh();
                                                    if(j+m-b.y<a.flakeHeight)b.active=0,
                                                    a.snowStick?b.stick():b.recycle();
                                                    else{
                                                        if(a.useMeltEffect&&b.active&&b.type<3&&!b.melting&&Math.random()>0.998)b.melting=true,
                                                        b.melt();
                                                        if(a.useTwinkleEffect)
                                                        if(b.twinkleFrame)b.twinkleFrame--,
                                                        b.o.style.visibility=b.twinkleFrame&&b.twinkleFrame%2===0?"hidden":"visible";
                                                        else if(Math.random()>0.9)b.twinkleFrame=parseInt(Math.random()*20,10)
                                                    }
                                                };
                                                this.animate=function(){
                                                    b.move()};
                                                    this.setVelocities=function(){
                                                        b.vX=u+g(a.vMaxX*0.12,0.1);
                                                        b.vY=v+g(a.vMaxY*0.12,0.1)};
                                                        this.setOpacity=function(a,b){
                                                            if(!q)return false;
                                                            a.style.opacity=b
                                                        };
                                                        this.melt=function(){
                                                            !a.useMeltEffect||!b.melting?b.recycle():b.meltFrame<b.meltFrameCount?(b.setOpacity(b.o,b.meltFrames[b.meltFrame]),
                                                            b.o.style.fontSize=b.fontSize-b.fontSize*(b.meltFrame/b.meltFrameCount)+"px",
                                                            b.o.style.lineHeight=a.flakeHeight+2+a.flakeHeight*0.75*(b.meltFrame/b.meltFrameCount)+"px",
                                                            b.meltFrame++):b.recycle()
                                                        };
                                                        this.recycle=function(){
                                                            b.o.style.display="none";
                                                            b.o.style.position=n?"fixed":"absolute";
                                                            b.o.style.bottom="auto";
                                                            b.setVelocities();
                                                            b.vCheck();
                                                            b.meltFrame=0;
                                                            b.melting=false;
                                                            b.setOpacity(b.o,1);
                                                            b.o.style.padding="0px";
                                                            b.o.style.margin="0px";
                                                            b.o.style.fontSize=b.fontSize+"px";
                                                            b.o.style.lineHeight=a.flakeHeight+2+"px";
                                                            b.o.style.textAlign="center";
                                                            b.o.style.verticalAlign="baseline";
                                                            b.x=parseInt(g(h-a.flakeWidth-20),10);
                                                            b.y=parseInt(g(j)*-1,10)-a.flakeHeight;
                                                            b.refresh();
                                                            b.o.style.display="block";
                                                            b.active=1
                                                        };
                                                        this.recycle();
                                                        this.refresh()
                                    };
                                    this.snow=function(){
                                        for(var c=0,
                                                d=0,
                                                e=0,
                                                f=null,
                                                f=a.flakes.length;
                                                f--;)a.flakes[f].active===1?(a.flakes[f].move(),c++):a.flakes[f].active===0?d++:e++,
                                                a.flakes[f].melting&&a.flakes[f].melt();
                                                if(c<a.flakesMaxActive&&(f=a.flakes[parseInt(g(a.flakes.length),10)],f.active===0))f.melting=true
                                    };
                                    this.mouseMove=function(c){
                                        if(!a.followMouse)return true;
                                        c=parseInt(c.clientX,10);c<k?p=-2+c/k*2:(c-=k,p=c/k*2)
                                    };
                                    this.createSnow=function(c,d){
                                        var e;
                                        for(e=0;e<c;e++)if(a.flakes[a.flakes.length]=new a.SnowFlake(a,parseInt(g(6),10)),d||e>a.flakesMaxActive)a.flakes[a.flakes.length-1].active=-1;
                                        y.targetElement.appendChild(x)};this.timerInit=function(){
                                            a.timers=!A?[setInterval(a.snow,a.animationInterval)]:[setInterval(a.snow,a.animationInterval*3),
                                            setInterval(a.snow,a.animationInterval)]
                                        };
                                        this.init=function(){
                                            var c;
                                            for(c=0;c<a.meltFrameCount;c++)a.meltFrames.push(1-c/a.meltFrameCount);
                                            a.randomizeWind();
                                            a.createSnow(a.flakesMax);
                                            a.events.add(e,"resize",a.resizeHandler);
                                            a.events.add(e,"scroll",a.scrollHandler);
                                            a.freezeOnBlur&&(i?(a.events.add(d,"focusout",a.freeze),
                                            a.events.add(d,"focusin",a.resume)):(a.events.add(e,"blur",a.freeze),
                                            a.events.add(e,"focus",a.resume)));
                                            a.resizeHandler();
                                            a.scrollHandler();
                                            a.followMouse&&a.events.add(i?d:e,"mousemove",a.mouseMove);
                                            a.animationInterval=Math.max(20,a.animationInterval);
                                            a.timerInit()};
                                            this.start=function(c){
                                                if(w){if(c)return true
                                                }else w=true;if(typeof a.targetElement==="string"&&(c=a.targetElement,a.targetElement=d.getElementById(c),
                                                !a.targetElement))throw Error('RazSnow: Falha ao pegar o target "'+c+'"');
                                                if(!a.targetElement)a.targetElement=!i?d.documentElement?d.documentElement:d.body:d.body;
                                                if(a.targetElement!==d.documentElement&&a.targetElement!==d.body)a.resizeHandler=a.resizeHandlerAlt;
                                                a.resizeHandler();
                                                a.usePositionFixed=a.usePositionFixed&&!t;
                                                n=a.usePositionFixed;
                                                if(h&&j&&!a.disabled)a.init(),a.active=true
                                            };
                                            a.autoStart&&a.events.add(e,"load",r,false);
                                            return this
}(window,document);

[Guest NathanDev]

Show man testei aqui no meu site e fico daora pelo plugin ;D

Editado Dezembro 20, 2015 por NathanDev