html雪花飘落代码(html雪花飘落代码复制)
利用JS给网页添加雪花飘落的效果
1、修改部分如下：
?head
??script?src="?Demo/jsized.snow.min.js"?type="text/javascript"/script????????
script
????/**
?????*?This?function?takes?2?arguments
?????*?First?is?the?path?to?the?directory?with?snowflake?images
?????*?Second?is?the?maximum?number?of?snowflakes,?please?do?not
?????*?set?this?number?above?60?as?it?will?impact?the?performance
?????*/
????createSnow("",?60);//目录改为当前目录
/script
?/head
?body
??测试
?/body
/html
2、在该网页目录?下?新添加?四张雪花图片?命名规则（snow0.gif?snow1.gif?snow2.gif?snow3.gif）
求网页飘雪花源代码
把下列代码加到网页的Body/Body标签之间
html
head
title:::飘雪花效果:::网页特效代码:::失落网家园;/title
/head
BODY bgcolor="#000000"
SCRIPT language=JavaScript1.2
var snowsrc="img/snow.gif"
var no = 10;
var ns4up = (document.layers) ? 1 : 0; // browser sniffer
var ie4up = (document.all) ? 1 : 0;
var dx, xp, yp; // coordinate and position variables
var am, stx, sty; // amplitude and step variables
var i, doc_width = 800, doc_height =600;
if (ns4up) {
doc_width = self.innerWidth;
doc_height = self.innerHeight;
} else if (ie4up) {
doc_width = document.body.clientWidth;
doc_height = document.body.clientHeight;
}
dx = new Array();
xp = new Array();
yp = new Array();
am = new Array();
stx = new Array();
sty = new Array();
for (i = 0; i no; ++ i) {
dx[i] = 0; // set coordinate variables
xp[i] = Math.random()*(doc_width-50); // set position variables
yp[i] = Math.random()*doc_height;
am[i] = Math.random()*20; // set amplitude variables
stx[i] = 0.02 + Math.random()/10; // set step variables
sty[i] = 0.7 + Math.random(); // set step variables
if (ns4up) { // set layers
if (i == 0) {
document.write("layer name=\"dot"+ i +"\" left=\"15\" top=\"15\" visibility=\"show\"a href=\"\"img src='"+snowsrc+"' border=\"0\"/a/layer");
} else {
document.write("layer name=\"dot"+ i +"\" left=\"15\" top=\"15\" visibility=\"show\"img src='"+snowsrc+"' border=\"0\"/layer");
}
} else if (ie4up) {
if (i == 0) {
document.write("div id=\"dot"+ i +"\" style=\"POSITION: absolute; Z-INDEX: "+ i +"; VISIBILITY: visible; TOP: 15px; LEFT: 15px;\"a href=\"\"img src='"+snowsrc+"' border=\"0\"/a/div");
} else {
document.write("div id=\"dot"+ i +"\" style=\"POSITION: absolute; Z-INDEX: "+ i +"; VISIBILITY: visible; TOP: 15px; LEFT: 15px;\"img src='"+snowsrc+"' border=\"0\"/div");
}
}
}
function snowNS() { // Netscape main animation function
for (i = 0; i no; ++ i) { // iterate for every dot
yp[i] += sty[i];
if (yp[i] doc_height-50) {
xp[i] = Math.random()*(doc_width-am[i]-30);
yp[i] = 0;
stx[i] = 0.02 + Math.random()/10;
sty[i] = 0.7 + Math.random();
doc_width = self.innerWidth;
doc_height = self.innerHeight;
}
dx[i] += stx[i];
document.layers["dot"+i].top = yp[i];
document.layers["dot"+i].left = xp[i] + am[i]*Math.sin(dx[i]);
}
setTimeout("snowNS()", 10);
}
function snowIE() { // IE main animation function
for (i = 0; i no; ++ i) { // iterate for every dot
yp[i] += sty[i];
if (yp[i] doc_height-50) {
xp[i] = Math.random()*(doc_width-am[i]-30);
yp[i] = 0;
stx[i] = 0.02 + Math.random()/10;
sty[i] = 0.7 + Math.random();
doc_width = document.body.clientWidth;
doc_height = document.body.clientHeight;
}
dx[i] += stx[i];
document.all["dot"+i].style.pixelTop = yp[i];
document.all["dot"+i].style.pixelLeft = xp[i] + am[i]*Math.sin(dx[i]);
}
setTimeout("snowIE()", 10);
}
if (ns4up) {
snowNS();
} else if (ie4up) {
snowIE();
}
/SCRIPT
table border="0" width="100%" cellpadding="0"
tr
td width="100%"font color="#ffffff" size="2"b飘雪花效果/b注意保存这个图片（img border="1" src="img/snow.gif" width="16" height="17"）/font/td
/tr
tr
td width="100%"
/table
script language="JavaScript" type="text/javascript" src="js.js"/scripttr/body
/html
求网页制作雪花飘落效果的代码
下面是雪花飘落的js代码
拷进去就好了，或者调用！！！！
script language="JavaScript"
!--
N =20;
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+7);
}
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]+"';z-index: 1font color=white size=3 face='Wingdings'T/font/LAYER")}
}
else{
document.write('div style="position:absolute;top:0px;left:0px;z-index: 1"');
document.write('div style="position:relative;z-index: 1"');
for (i = 0; i N; i++)
{document.write('div id="si" style="position:absolute;z-index: 1;top:0;left:0;width:'+M[i]+';height:'+M[i]+';font-size:'+M[i]+'"font color=white size=3 face="Wingdings"T/font/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];
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+7);
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()',40);
}
snow()
//--
/script
请问Flash中的雪花飘落效果如何在某一确定帧停止？
stop()是没法停的，需要移除事件监听。
如此更改你的事件处理函数：
function xx(evt:Event) {
if (i300) {
var mc:MovieClip=new xh();
mc.name="xh"+i;
mc.x=Math.random()*550;
mc.y=Math.random()*400;
mc.scaleX=mc.scaleY=Math.random()*0.6+0.4;
mc.alpha=0.3+0.6*Math.random();
i++;
addChild(mc);
}
if(currentFrame==yy)
{
removeEventListener(Event.ENTER_FRAME,xx);
}
}
yy就是你想停止雪花效果的帧数