这是一款网页雪花漂浮飞舞效果，需要用到雪花特效的朋友可以来参考这个例子，可自定义漂浮速度。
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<title>js实现雪花漂浮飞舞特效_武鸣人</title>
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* {margin:0; padding:0; vertical-align:top;}
.xue{position:absolute;color:#fff;}
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<a href="https://www.wuming.ren">武鸣人</a>，各种信息资源免费发布，分享励志语录经典短句，减肥健身常识，各种js特效代码。网站很好记住，wuming.ren(武鸣拼音.ren域名后缀)<hr>
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<script type="text/javascript" src="https://www.wuming.ren/ad/tc.js"></script>
<script type="text/javascript" src="https://www.wuming.ren/ad/a.js"></script>
<div id="b_wuming_ren" style="position:absolute;top:0px;right:0px;width:400px;border:1px #000 solid;background:#fff;z-index:9;height:30px;"></div>
<div id="box_wuming_ren" style="height:600px;position:relative;border:1px red solid;background:#000;overflow:hidden;"></div>
<div style="position:absolute;top:0px;right:400px;border:1px #000 solid;background:#fff;width:400px;height:30px;z-index:5;">
<input id="wind_id" value="10" />级风
<input id="wind_button" type=button value="飘啊飘飘啊飘" />
</div>
<script>
var box_wuming_ren = document.getElementById("box_wuming_ren");
var i= 0,c,d,wind_time;
var all = 0,other = 0,wind=0;
box_wuming_ren.style.width = '1000px';
document.getElementById("wind_button").onclick = function(){
clearTimeout(wind_time);wind = 0;
//document.getElementById("wind_id").value.match(/\d/);
wind = parseInt(document.getElementById("wind_id").value);
wind_run(wind);
}//武鸣人网站https://www.wuming.ren 网站很好记住，wuming.ren(武鸣拼音.ren域名后缀)
function gogo(){
var a = document.createElement("div");
a.innerHTML = '.';
a.id = "xue" + i;
a.className = "xue";
a.style.top = parseInt(box_wuming_ren.style.height) * (Math.random() > 0.3 ? Math.random() : 0) + 'px';
if(wind != 0){var ss = Math.random() > Math.abs(wind*0.025) ? Math.random() : (wind > 0 ? 0 : 1) ;}else{var ss = Math.random()}
a.style.left = parseInt(box_wuming_ren.style.width) * ss + 'px';
box_wuming_ren.appendChild(a);
godown(a.id,a.id,8*Math.random());
i++;
all++;
var x = 100 * Math.random()* Math.random();
setTimeout('gogo()',x);
};//武鸣人网站https://www.wuming.ren 网站很好记住，wuming.ren(武鸣拼音.ren域名后缀)
function removeElement(_element){//移除标签的函数
var _parentElement = _element.parentNode;
if(_parentElement){
_parentElement.removeChild(_element);
};
};//武鸣人网站https://www.wuming.ren 网站很好记住，wuming.ren(武鸣拼音.ren域名后缀)
function godown(a,e,speed){
if(speed < 3){speed = 3}
var a1 =document.getElementById(a);
a1.style.top = parseInt(a1.style.top) + speed +'px';
if(parseInt(a1.style.top) < parseInt(box_wuming_ren.style.height)){e = setTimeout("godown(\""+a+"\",\""+e+"\","+speed+")",20)}
else{
clearTimeout(e);
removeElement(a1);
speed=null;
other++;
document.getElementById('b_wuming_ren').innerHTML = "区域内还有"+(all-other)+"个雪花点."//
};
};//武鸣人网站https://www.wuming.ren 网站很好记住，wuming.ren(武鸣拼音.ren域名后缀)
function wind_run(wind){
var a = document.getElementById("box_wuming_ren").getElementsByTagName('div');
for(var i = 0;i<a.length;i++){
a[i].style.left = parseInt(a[i].style.left) + wind +'px';
};
if(Math.abs(wind) > 0.1){wind_time = setTimeout("wind_run("+wind+")",20)}
else{clearTimeout(wind_time);wind = 0;};
};//武鸣人网站https://www.wuming.ren 网站很好记住，wuming.ren(武鸣拼音.ren域名后缀)
gogo();
</script>
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