html网站背景雪花飘落效果代码(网页制作雪花飘落)
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
求淘宝首页动态雪花代码
div class="J_TWidget" data-widget-config="{'duration':0.1,'activeTriggerCls':'.tshop-psm-shop-ww-hover','interval':0.1,'effect':'scrollx','activeIndex':1,'navCls':'user-crzysj','contentCls':'user-crzysjii','autoplay':true}" data-widget-type="Carousel" style="position:relative;"ul class="user-crzysjii" style="display: none; width: 999999px; left: 0px; position: absolute;"li class="-_-switchable-panel-internal535 ks-switchable-panel-internal998" style="width: 475px; height: 800px; display: block; float: left;" /li/ulul class="user-crzysj"li class="-_-switchable-trigger-internal534 ks-switchable-trigger-internal997 tshop-psm-shop-ww-hover" style="width:475px;height:800px;right:50%;margin-right:505px;"embed allownetworking="all" allowscriptaccess="never" flashvars="scene=taobao_shop" height="1000" name="flashfirebug_1387778983714" src="" type="application/x-shockwave-flash" width="475" wmode="transparent"/li/ul/divdiv class="J_TWidget" data-widget-config="{'duration':0.1,'activeTriggerCls':'.tshop-psm-shop-ww-hover','interval':0.1,'effect':'scrollx','activeIndex':1,'navCls':'user-crzysj','contentCls':'user-crzysjii','autoplay':true}" data-widget-type="Carousel" style="position:relative;z-index:99;"ul class="user-crzysjii" style="display: none; width: 999999px; left: 0px; position: absolute;"li class="-_-switchable-panel-internal635 ks-switchable-panel-internal1108" style="width: 475px; height: 800px; display: block; float: left;" /li/ulul class="user-crzysj"li class="-_-switchable-trigger-internal634 ks-switchable-trigger-internal1107 tshop-psm-shop-ww-hover" style="width:475px;height:800px;left:50%;margin-left:505px;"embed allownetworking="all" allowscriptaccess="never" flashvars="scene=taobao_shop" height="1000" name="flashfirebug_1387778983652" src="" type="application/x-shockwave-flash" width="475" wmode="transparent"/li/ul/div
为什么以下html没有出现想要的花瓣像雪花飘落效果(图片是花瓣飘落)
我试了下你的代码,在我的浏览器里,能出现你的说的效果,你看看是不是别的问题导致没有效果的呀。
不行你再HI我好了。
利用JS给网页添加雪花飘落的效果
1、修改部分如下:
html
?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)
网页飘雪花的代码是什么
在后台添加js特效可实现这样的效果。
js代码为:
script language="JavaScript"
!--
var no = 5; //雪片数目
var speed = 20; //飘动速度。(值越大越慢)
var ns4up = (document.layers) ? 1 : 0; //当前浏览器类型,如果是NS则为1
var ie4up = (document.all) ? 1 : 0; //当前浏览器类型,如果是IE则为1
var s, x, y, sn, cs;
var a, r, cx, cy;
var i, doc_width = 800, doc_height = 600;
x = new Array();
y = new Array();
r = new Array();
cx = new Array();
cy = new Array();
s = 8; //每次下落的高度,越小越平滑,但是也越慢
if (ns4up) { //以NS兼容方式
doc_width = self.innerWidth; //取页面宽度
doc_height = self.innerHeight; //取页面高度
}
else
if (ie4up) { //以IE兼容方式
doc_width = document.body.clientWidth; //取页面宽度
doc_height = document.body.clientHeight; //取页面高度
}
for (i = 0; i no; ++ i) { //根据前面定义的雪片数目写进相应数目的层
initSnow(); //随机初始化层的坐标
if (ns4up) { //如果浏览器是NS
//用layer作为雪片(星号)的容器
document.write("layer name=\"dot"+ i +"\" left=\"1\" ");
document.write("top=\"1\" visibility=\"show\"font color=\"red\"");
document.write("*/font/layer");
}
else
if (ie4up) { //如果浏览器是IE
//用div作为雪片的容器
document.write("div id=\"dot"+ i +"\" style=\"POSITION: ");
document.write("absolute; Z-INDEX: "+ i +"; VISIBILITY: ");
document.write("visible; TOP: 15px; LEFT: 15px;\"font color=\"red\"");
document.write("*/font/div");
}
}
//初始化雪片,生成随机坐标
function initSnow() {
a = 6;
r[i] = 1;
sn = Math.sin(a);
cs = Math.cos(a);
cx[i] = Math.random() * doc_width + 1;
cy[i] = Math.random() * doc_height + 1;
x[i] = r[i] * sn + cx[i];
y[i] = cy[i];
}
//计算雪花位置,从新位置上出现,看起来就像是新产生的一样。
function makeSnow() {
r[i] = 1;
cx[i] = Math.random() * doc_width + 1;
cy[i] = 1;
x[i] = r[i] * sn + cx[i];
y[i] = r[i] * cs + cy[i];
}
//雪花下落的计算
function updateSnow() {
r[i] += s;
x[i] = r[i] * sn + cx[i];
y[i] = r[i] * cs + cy[i];
}
//在NS浏览器上处理雪片下落的主程序
function SnowdropNS() {
for (i = 0; i no; ++ i) { //依次处理每片雪花
updateSnow(); //下落
if ((x[i] = 1) || (x[i] = (doc_width - 20)) || (y[i] = (doc_height - 20))) { //如果超出屏幕范围
makeSnow(); //则调整雪片到新位置上
doc_width = self.innerWidth; //更新页面宽度数据
doc_height = self.innerHeight; //更新页面高度数据
}
document.layers["dot"+i].top = y[i]; //改变层的Y坐标,应用新的位置
document.layers["dot"+i].left = x[i]; //改变层的X坐标,应用新的位置
}
setTimeout("SnowdropNS()", speed);
}
//在IE浏览器上处理雪片下落的主程序
function SnowdropIE() {
for (i = 0; i no; ++ i) { //依次处理每片雪花
updateSnow(); //下落
if ((x[i] = 1) || (x[i] = (doc_width - 20)) || (y[i] = (doc_height - 20))) { //如果超出屏幕范围
makeSnow(); //则调整雪片到新位置上
doc_width = document.body.clientWidth; //更新页面宽度数据
doc_height = document.body.clientHeight; //更新页面高度数据
}
document.all["dot"+i].style.pixelTop = y[i]; //改变层的坐标,应用新的位置
document.all["dot"+i].style.pixelLeft = x[i];
}
setTimeout("SnowdropIE()", speed); //准备下一次下落过程。
}
if (ns4up) { //如果是NS
SnowdropNS(); //调用SnowdropNS使雪片下落
}
else
if (ie4up) { //如果是NS
SnowdropIE(); //调用SnowdropIE使雪片下落
}
--
/script
说明:可以根据自己的需求根据说明进行相应参数的修改