页面闪电效果

稿源：互联网 2022-08-13 14:49:31 点击： 253 撤稿纠错

页面闪电逼真效果，阿里西西网页特效收集。

以下讨论的是和特效相关的页面闪电效果教程文章，内容是本站精心挑选整理的教程，希望对广大的网友给到帮助,下面是详细内容：

脚本代码(For Alixixi.com)如下:

脚本说明:
把如下代码加入<body>区域中
<SCRIPT>
<!--

ie4=document.all?1:0;
ns4=document.layers?1:0;
ns5=(document.getElementById && !document.all)?1:0;

function init(){
// Bolt has an aura? (true | false) // takes twice as long to strike
aura=false;
bcolor="white";
acolor="blue";

// Make background color flash? (true | false)
flash=true;
skyNorm="black";
skyFlash="#000050";
if (flash) document.bgColor=skyNorm;

// nbs = Number of main bolt segments
nbs = 50;
ct=0;
// Font sizes for lightning bolt and aura segments
fsb=shi*.3;
fsf=shi*.2;
fsbi=shi*.2;
fsfi=shi*.12;
fsbii=shi*.12;
fsfii=shi*.07;

xpos=cswi; ypos=0;
if (ns5) ark = document.getElementById("ark");
if (ns4) {

ol=document.layers["ark"];
ol = new Layer(swi);
ol.left = 0;
ol.top = 0;
ol.height = shi;
ol.zIndex=1;
ol.visibility = "hide";

ret="<STYLE TYPE='text/css'>";
for (i=1;i<10;i++){
ret+="DIV.bolt"+i+" {position:absolute; font-style:'Times New Roman'; font-size:"+(fsf*i/9)+"px; color:"+bcolor+"; visibility:inherit; z-index:1}";
if (aura) ret+="DIV.bolta"+i+" {position:absolute; font-style:'Times New Roman'; font-size:"+(fsf*1.3*i/9)+"px; color:blue; visibility:inherit; z-index:0}";
} ret+="</STYLE>";

for (fs=1;fs<10;fs++)
for (i=1;i<nbs;i++) {
if (aura) ret+="<DIV id=a"+i+"f"+fs+" class=bolta"+fs+">.</DIV>";
ret+="<DIV id=s"+i+"f"+fs+" class=bolt"+fs+">.</DIV>";
}

//ol.document.open();
ol.document.write(ret);
ol.document.close();
}
Time1=setTimeout("mainplot()",100);
}

function mainplot()
{
lang=0;
xpos=Math.random()*cswi+cswi/2; ypos=0; fs=9; fsi=8
deg=Math.random()*30-15+((xpos<cswi)? +15:-15);
jag=Math.round(Math.random()*100)/100;
zag=Math.round(Math.random()*100)/100;
cur=Math.round((.5 * (Math.random()*10-5))*100)/100;
ion=(Math.random()>.5)? 1:-1;
//status=" "+ct+" Divs "+format(jag)+" jag "+format(zag)+" zag "+cur+" curve"; ct=0;

if (ns4)
{
for (i=1;i<nbs;i++) {
ang=Math.random()*jag*90-jag*45;
if (Math.random()+.05>zag) lang=Math.random()*zag*90-zag*45; 
ang+=lang;
ct++;
if (Math.random()*10>9.5 && fsi>1) {fsi--; leg1();}
xpos+=Math.sin((deg+(ang+i*cur))/57.3)*(fsf*fs/9)*.07;
ypos+=Math.abs(Math.cos((deg+(ang+i*cur))/57.3)*(fsf*fs/9)*.07); //fsb=fsf*1.5;
if (aura) { ol.document.layers["a"+i+"f"+fs].moveTo(xpos-(fsf*1.3*fs/9)*.125,ypos-(fsf*1.3*fs/9)*.85); ct++;}
ol.document.layers["s"+i+"f"+fs].moveTo(xpos-(fsf*fs/9)*.125,ypos-(fsf*fs/9)*.85);
if (ypos>shi || xpos<0 || xpos>swi) i=nbs;
}
//status=" "+ct+" Divs "+format(jag)+" jag "+format(zag)+" zag "+cur+" curve";
ol.resizeTo(swi,shi);
Time1=setTimeout("light()",100);
}

if (ie4 || ns5) { 
// Rewriting layers can be faster than repositioning in internet explorer
ret="";
fsf=shi*.2;
for (i=1;i<nbs;i++)
{
ang=Math.random()*jag*90-jag*45;
if (Math.random()+.05>zag) lang=Math.random()*zag*90-zag*45; 
ang+=lang;
ct++;
if (Math.random()*10>9.5) {fsfi=fsf*.6; fsf*=.95; leg1();}
xpos+=Math.sin((deg+(ang+i*cur))/57.3)*fsf*.07;
ypos+=Math.abs(Math.cos((deg+(ang+i*cur))/57.3)*fsf*.07); fsb=fsf*1.3;
if (ypos>shi || xpos<0 || xpos>swi) i=nbs;
if (aura) { ret+="<DIV id='darg"+i+"' style='position:absolute; left:"+(xpos-fsb*.125)+"; top:"+(ypos-fsb*.85)+"; font-size:"+fsb+"px; color:rgb(0,0,255); z-Index:0' >.</DIV>"; ct++;}
ret+="<DIV style='position:absolute; left:"+(xpos-fsf*.125)+"; top:"+(ypos-fsf*.85)+"; font-size:"+fsf+"px; color:"+bcolor+"; z-Index:1' >.</DIV>";
}
//status=" "+ct+" Divs "+format(jag)+" jag "+format(zag)+" zag "+cur+" curve";
ark.innerHTML=ret;
Time1=setTimeout("lightie()",100);
}
}

function light()
{ ol.moveTo(pageXOffset,pageYOffset);
ol.visibility = "show";
if (flash) document.bgColor=skyFlash;
Time2=setTimeout("ning()",(Math.random()*1000+1000));
}

function lightie()
{ ark.style.left=document.body.scrollLeft;
ark.style.top=document.body.scrollTop;
ark.style.visibility = "visible";
if (flash) document.bgColor=skyFlash;
Time2=setTimeout("ningie()",(Math.random()*500+100));
}

function ningie()
{ ark.style.visibility = "hidden";
if (flash) document.bgColor=skyNorm;
if (Math.random()*3>2) Time2=setTimeout("lightie()",(Math.random()*500+100)); else Time1=setTimeout("mainplot()",(Math.random()*500+100));
}

function format(f){ f+="";
if (f.charAt(0)==".") f="0"+f;
if (f.length==1) f+=".00";
if (f.length==3) f+="0";
return f;
}

function halt() {
if (Time1) {clearTimeout(Time1); Time1=null;}
if (Time2) {clearTimeout(Time2); Time2=null;}
}

//-->

</SCRIPT>

<SCRIPT language=Javascript>
<!--
swi=(ie4)? document.body.offsetWidth-17:window.innerWidth;
shi=(ie4)? document.body.offsetHeight-4:window.innerHeight;
cswi=swi/2;
cshi=shi/2;

ret="<DIV id='ark' style='position:absolute; left:0; top:0; width:"+swi+"; height:"+shi+"; visibility:visible; z-index=1; overflow:hidden; clip:rect(0,"+(swi)+","+(shi)+",0)'></DIV>";
document.write(ret);

//-->
</SCRIPT>

第二步：把<body>中的内容改为：
<BODY bgcolor="#fef4d9" 
onload=window.focus();init(); 
onresize=document.location.href=document.location.href; onunload=halt();>

<a href="http://www.alixixi.com/Dev/HTML/jsrun/">欢迎访问阿里西西网页特效集</a>

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