javascript neige ❄️

<script type="text/javascript">

var no = 40;var delai = 10;

var dx = new Array(), xp = new Array(), yp = new Array();

var am = new Array(), stx = new Array(), sty = new Array();

var i;

larg_fenetre = (document.body.offsetWidth<window.innerWidth)? window.innerWidth:document.body.offsetWidth;

haut_fenetre = (document.body.offsetHeight<window.innerHeight)? window.innerHeight:document.body.offsetHeight;

for (i = 0; i < no; i++) { 

    dx[i] = 0;

    xp[i] = Math.random()*(larg_fenetre-40);

    yp[i] = Math.random()*haut_fenetre;

    am[i] = Math.random()*20;

    stx[i] = 0.02 + Math.random()/10;

    sty[i] = 0.7 + Math.random();

    

    obj = document.getElementsByTagName('body')[0];

    para = document.createElement("img");

    para.setAttribute("src","https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhf1YRAWi_wk_7E_XAv4tPRb-QiP-6-fbAX2nLKCxavIAolJjawTrZ6VDp3sRWBoM6-qhuEEaE5tvq7ydCbljEVGGvc4WXGhR5Mt9wRRpc8o01YlurPk4BsuJGsX9ltY7LuWAzk3cEd9bfk/s1600/neige.gif");

    para.setAttribute("id","dot" + i);

    para.style.position = "absolute";

    para.style.zIndex = "2";

    obj.appendChild(para);

}

function neige() {

    for (i = 0; i < no; i++) {

        dx[i] += stx[i];

        yp[i] += sty[i];

        if (yp[i] > haut_fenetre-50) {

            xp[i] = Math.random()*(larg_fenetre-am[i]-40);

            yp[i] = 0;

        }

        document.getElementById("dot"+i).style.top = yp[i] + "px";

        document.getElementById("dot"+i).style.left = xp[i] + am[i]*Math.sin(dx[i]) + "px";

    }

    setTimeout("neige()", delai);

}

neige();

</script>

Source : http://vic.drago.free.fr/neige.php

#javascript #neige #snow