Dieser Beitrag beinhaltet 1202 Wörter. – Geschätzte Lesezeit: ca. 7 Minuten.
Weihnachtszeit – einfach herrlich. Lassen Sie es heute mal schneien auf Ihrer Website. Mittels eines kleinen JScripts, das wir Ihnen heute zur Verfügung stellen.
Das Script wurde vor einiger Zeit von Zachary Johnson programmiert. Sie können es ganz einfach in den Headbereich Ihrer Website einfügen. Hier ist der nötige Code dazu:
<script>
(function ($) {
//
// Zachary Johnson
// https://www.zachstronaut.com/posts/2009/12/21/happy-xmas-winternet.html
// December 2009
//
var ww = 0;
var wh = 0;
var maxw = 0;
var minw = 0;
var maxh = 0;
var textShadowSupport = true;
var xv = 0;
var snowflakes = ["\u2744", "\u2745", "\u2746"];
var prevTime;
var absMax = 200;
var flakeCount = 0;
$(init);
function init()
{
var detectSize = function ()
{
ww = $(window).width();
wh = $(window).height();
maxw = ww + 300;
minw = -300;
maxh = wh + 300;
};
detectSize();
$(window).resize(detectSize);
if (!$('body').css('textShadow'))
{
textShadowSupport = false;
}
/* Should work in Windows 7 /*
if (/windows/i.test(navigator.userAgent))
{
snowflakes = ['*']; // Windows sucks and doesn't have Unicode chars installed
//snowflakes = ['T']; //No FF support for Wingdings
}
*/
// FF seems to just be able to handle like 50... 25 with rotation
// Safari seems fine with 150+... 75 with rotation
var i = 50;
while (i--)
{
addFlake(true);
}
prevTime = new Date().getTime();
setInterval(move, 50);
}
function addFlake(initial)
{
flakeCount++;
var sizes = [
{
r: 1.0,
css: {
fontSize: 15 + Math.floor(Math.random() * 20) + 'px',
textShadow: '9999px 0 0 rgba(238, 238, 238, 0.5)'
},
v: 2
},
{
r: 0.6,
css: {
fontSize: 50 + Math.floor(Math.random() * 20) + 'px',
textShadow: '9999px 0 2px #eee'
},
v: 6
},
{
r: 0.2,
css: {
fontSize: 90 + Math.floor(Math.random() * 30) + 'px',
textShadow: '9999px 0 6px #eee'
},
v: 12
},
{
r: 0.1,
css: {
fontSize: 150 + Math.floor(Math.random() * 50) + 'px',
textShadow: '9999px 0 24px #eee'
},
v: 20
}
];
var $nowflake = $('<span class="winternetz">' + snowflakes[Math.floor(Math.random() * snowflakes.length)] + '</span>').css(
{
/*fontFamily: 'Wingdings',*/
color: '#eee',
display: 'block',
position: 'fixed',
background: 'transparent',
width: 'auto',
height: 'auto',
margin: '0',
padding: '0',
textAlign: 'left',
zIndex: 9999
}
);
if (textShadowSupport)
{
$nowflake.css('textIndent', '-9999px');
}
var r = Math.random();
var i = sizes.length;
var v = 0;
while (i--)
{
if (r < sizes[i].r)
{
v = sizes[i].v;
$nowflake.css(sizes[i].css);
break;
}
}
var x = (-300 + Math.floor(Math.random() * (ww + 300)));
var y = 0;
if (typeof initial == 'undefined' || !initial)
{
y = -300;
}
else
{
y = (-300 + Math.floor(Math.random() * (wh + 300)));
}
$nowflake.css(
{
left: x + 'px',
top: y + 'px'
}
);
$nowflake.data('x', x);
$nowflake.data('y', y);
$nowflake.data('v', v);
$nowflake.data('half_v', Math.round(v * 0.5));
$('body').append($nowflake);
}
function move()
{
if (Math.random() > 0.8)
{
xv += -1 + Math.random() * 2;
if (Math.abs(xv) > 3)
{
xv = 3 * (xv / Math.abs(xv));
}
}
// Throttle code
var newTime = new Date().getTime();
var diffTime = newTime - prevTime;
prevTime = newTime;
if (diffTime < 55 && flakeCount < absMax)
{
addFlake();
}
else if (diffTime > 150)
{
$('span.winternetz:first').remove();
flakeCount--;
}
$('span.winternetz').each(
function ()
{
var x = $(this).data('x');
var y = $(this).data('y');
var v = $(this).data('v');
var half_v = $(this).data('half_v');
y += v;
x += Math.round(xv * v);
x += -half_v + Math.round(Math.random() * v);
// because flakes are rotating, the origin could be +/- the size of the flake offset
if (x > maxw)
{
x = -300;
}
else if (x < minw)
{
x = ww;
}
if (y > maxh)
{
$(this).remove();
flakeCount--;
addFlake();
}
else
{
$(this).data('x', x);
$(this).data('y', y);
$(this).css(
{
left: x + 'px',
top: y + 'px'
}
);
// only spin biggest three flake sizes
if (v >= 6)
{
$(this).animate({rotate: '+=' + half_v + 'deg'}, 0);
}
}
}
);
}
})(jQuery);
</script>So einfach. Auf Ihrer Website wirbeln nun Flocken umher.
Besonders hübsch sieht das Schneegestöber natürlich auf dunklem Hintergrund aus:
Werbung
Werbung
