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java漫天飞雪代码的简单介绍

CSS主页面中怎么加雪花飘落效果代码

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head

title网页特效|Linkweb.cn/Js|---页面漫天飞雪/title

meta http-equiv="Content-Type" content="text/html; charset=gb2312"

/head

body bgcolor="#000000" onLoad="snow()"

script language="JavaScript"

!--

N = 40;

Y = new Array();

X = new Array();

S = new Array();

A = new Array();

B = new Array();

M = new Array();

V = (document.layers)?1:0;

iH=(document.layers)?window.innerHeight:window.document.body.clientHeight;

iW=(document.layers)?window.innerWidth:window.document.body.clientWidth;

for (i=0; i N; i++){

Y[i]=Math.round(Math.random()*iH);

X[i]=Math.round(Math.random()*iW);

S[i]=Math.round(Math.random()*5+2);

A[i]=0;

B[i]=Math.random()*0.1+0.1;

M[i]=Math.round(Math.random()*1+1);

}

if (V){

for (i = 0; i N; i++)

{document.write("LAYER NAME='sn"+i+"' LEFT=0 TOP=0 BGCOLOR='#FFFFF0' CLIP='0,0,"+M[i]+","+M[i]+"'/LAYER")}

}

else{

document.write('div style="position:absolute;top:0px;left:0px"');

document.write('div style="position:relative"');

for (i = 0; i N; i++)

{document.write('div id="si" style="position:absolute;top:0;left:0;width:'+M[i]+';height:'+M[i]+';background:#fffff0;font-size:'+M[i]+'"/div')}

document.write('/div/div');

}

function snow(){

var H=(document.layers)?window.innerHeight:window.document.body.clientHeight;

var W=(document.layers)?window.innerWidth:window.document.body.clientWidth;

var T=(document.layers)?window.pageYOffset:document.body.scrollTop;

var L=(document.layers)?window.pageXOffset:document.body.scrollLeft;

for (i=0; i N; i++){

sy=S[i]*Math.sin(90*Math.PI/180);

sx=S[i]*Math.cos(A[i]);

Y[i]+=sy;

X[i]+=sx;

if (Y[i] H){

Y[i]=-10;

X[i]=Math.round(Math.random()*W);

M[i]=Math.round(Math.random()*1+1);

S[i]=Math.round(Math.random()*5+2);

}

if (V){document.layers['sn'+i].left=X[i];document.layers['sn'+i].top=Y[i]+T}

else{si[i].style.pixelLeft=X[i];si[i].style.pixelTop=Y[i]+T}

A[i]+=B[i];

}

setTimeout('snow()',10);

}

//--

/script

script language="Javascript"

!--

function selectAll(theField){

var tempval=eval("document."+theField)

tempval.focus()

tempval.select()

}

//--

/script

/table

/body


文章标题:java漫天飞雪代码的简单介绍
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