How to stop Jsnow animation?
Hi, Jsnow is one of the light-weight jQuery plug-ins which is producing snow effect. Here, I want snow effect no longer after few seconds of initate and Jsnow is working in background continuously to make snow effect perfect. Obviously, this is affect event handling speed of other javascripts. And In my case, I have to stop Jsnow completely.
Hi, Jsnow is one of the light-weight jQuery plug-ins which is producing snow effect. Here, I want snow effect no longer after few seconds of initate and Jsnow is working in background continuously to make snow effect perfect. Obviously, this is affect event handling speed of other javascripts. And In my case, I have to stop Jsnow completely.
So I have added an option variable "stopSnow" and by default it is holding value "0" which is mean run snow forever and then made some changes plugin itself. By changing this value (in milliseconds), I can stop the snow completely.
Plugin Code:
// jSnow, a jQuery Plugin
v1.1.mod2
// Licensed under GPL licenses.
// Copyright (C) 2009 Nikos
"DuMmWiaM" Kontis, dummwiam@gmail.com
// http://www.DuMmWiaM.com/jSnow
// Modified 2009~
// Updated in 2009 by Shadowmint
(http://shadowmint.blogspot.com/)
// Updated in 2010 by Serban Boanca
(http://www.dj50.ro/)
// Updated in 2012 by PointerUnits (http://www.pointerunits.com)
(function ($) {
$.fn.jSnow = function (h) {
var j = $.extend({},
$.fn.jSnow.defaults, h);
var k, WIN_HEIGHT;
var l = j.flakes;
var m = j.flakeCode;
var n = j.flakeColor;
var o = j.flakeMinSize;
var p = j.flakeMaxSize;
var q = j.fallingSpeedMin;
var r = j.fallingSpeedMax;
var s = j.interval;
var t = j.zIndex;
var vs = j.vSize;
var fa = j.fadeAway;
var fs = j.followScroll;
var stp=j.stopSnow;
setWaH();
var useGif = false;
if ($.browser.msie &&
(parseFloat($.browser.version) < 8))
useGif = true;
if ($.browser.msie &&
(parseFloat($.browser.version) < 8) && t == "auto")
t = 0;
var u = $("<div
\/>");
u.css({
width: k + "px",
height: 1,
display: "block",
overflow: "visible",
position: "absolute",
left: "1px",
zIndex: t
});
if (fs) {
u.css('top',$("html").scrollTop() +
1 + "px");
} else {
u.css='1px';
}
$("body").prepend(u).css({
height: "100%"
});
$("html").css({
"overflow-y": "scroll",
"overflow-x": "hidden"
});
var v = Array();
generateFlake(l, false);
var
animateSnow=setInterval(animateFlakes, s);
if(stp > 0){
setTimeout(function(){
u.fadeOut(2000,function(){clearInterval(animateSnow);u.remove();});
},stp);
}
window.onresize = setWaH;
function setWaH() {
k = $('body').width();
if (!vs) {
WIN_HEIGHT = window.innerHeight ||
document.documentElement.clientHeight
WIN_HEIGHT -= 50;
} else WIN_HEIGHT = vs;
};
if (fs) {
window.onscroll = function () {
u.css({
top: $("html").scrollTop() + "px"
})
};
}
function
generateFlake(a, b) {
a = a || 1;
b = b || false;
var i = 0;
for (i = 0; i < a; i++) {
var c = $("<span
\/>");
var d = o + Math.floor(Math.random()
* p);
var e = m[Math.floor(Math.random() *
m.length)];
if (e.indexOf(".gif") != -1 ||
e.indexOf(".png") != -1) {
var f = new Image();
if (useGif)
e = e.replace("png", "gif");
f.src = e;
e = "<img src='" + e + "'
alt='jSnowFlake'>"
}
c.html(e).css({
color: n[Math.floor(Math.random() *
n.length)],
fontSize: d + "px",
display: "block",
position: "absolute",
cursor: "default",
"z-index": t
});
$(u).append(c);
f_left = Math.floor(Math.random() * (k
- c.width() - 50)) + 25;
f_top = (b) ? -1 * c.height() :
Math.floor(Math.random() * (WIN_HEIGHT - 50));
var g = Math.floor(Math.random() *
90);
jQuery.data(c, "posData", {
top: f_top,
left: f_left,
rad: Math.random() * 50,
i: Math.ceil(q + Math.random() * (r
- q)),
swingRange: g
});
c.css({
top: f_top + "px",
left: f_left + "px"
});
v.push(c)
}
};
function animateFlakes()
{
var i = 0;
for (i = v.length - 1; i >= 0;
i--) {
var f = v[i];
var a = jQuery.data(f, "posData");
a.top += a.i;
var b = Number();
b = Math.cos((a.rad / 180) *
Math.PI);
a.rad += 2;
var X = a.left - b * a.swingRange;
if (fa) {
op=(WIN_HEIGHT - a.top < 100) ?
((WIN_HEIGHT - a.top) / 100) : 1;
f.css('opacity',op);
}
f.css({
top: a.top + "px",
left: X + "px"
});
if (a.top > WIN_HEIGHT) {
jQuery.removeData(f);
f.remove();
v.splice(i, 1);
generateFlake(1, true)
}
}
};
return this
};
$.fn.jSnow.defaults = {
flakes: 30,
fallingSpeedMin: 1,
fallingSpeedMax: 3,
flakeMaxSize: 20,
flakeMinSize: 10,
flakeCode: ["•"],
flakeColor: ["#fff"],
zIndex: "auto",
interval: 50,
stopSnow:0 //Never stop snow
}
})(jQuery);
Example:
$(function() {
$().jSnow({
vSize:'100',
fadeAway:true,
stopSnow:3000 //Stop snow
after 3 seconds
});
});
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