球
http://nknucc.nknu.edu.tw/~s1378/wjs-13079961.htm
請問為什麼下面的编码看不到烟花的...只有叉烧包...!!!!
<SCRIPT LANGUAGE="JavaScript1.2" TYPE="text/javascript">
<!--
var uti = true;
var speed = 6;
var fireSize = 180;
var fireNo = 6;
var wa = 4;
var space = 15;
var img = "line-58.gif";
var _dom=(document.all?3document.getElementById?1document.layers?2:0)));
var fireLay="";
for (i=0; i<fireNo*wa; i++) {
if (_dom == 1 || _dom == 3) {
fireLay += '<DIV id="fire' + i + '" style="position:absolute; width:1px; height:1px left:-100px; top=-100px;"><IMG src="' + img + '"></DIV>';
}
if (_dom == 2) {
fireLay += '<LAYER name="fire'+ i +'" left="-100" top="-100"><IMG src="' + img + '"></LAYER>\n';
}
}
document.writeln(fireLay);
function getWindowSize() {
if(_dom == 1 || _dom == 2) {
win_width = self.innerWidth;
win_height = self.innerHeight;
}
if (_dom == 3) {
win_width = document.body.clientWidth;
win_height = document.body.clientHeight;
}
}
function showLayer(layerName){
if (_dom == 1) document.getElementById(layerName).style.visibility = "visible";
if (_dom == 2) document.layers[layerName].visibility = "show";
if (_dom == 3) document.all(layerName).style.visibility = "visible";
}
function hideLayer(layerName){
if (_dom == 1) document.getElementById(layerName).style.visibility = "hidden";
if (_dom == 2) document.layers[layerName].visibility = "hide";
if (_dom == 3) document.all(layerName).style.visibility = "hidden";
}
function moveLayerTo(layerName, x, y){
if (_dom == 1) {
document.getElementById(layerName).style.left = x + scrollX;
document.getElementById(layerName).style.top = y + scrollY;
}
if (_dom == 2) {
document.layers[layerName].left = x + pageXOffset;
document.layers[layerName].top = y + pageYOffset;
}
if (_dom == 3) {
document.all(layerName).style.pixelLeft = x + document.body.scrollLeft
document.all(layerName).style.pixelTop = y + document.body.scrollTop;
}
}
function utiage(layerName,sx,sy,ex,ey,dl,sp) {
var l, xp, yp, tim, z, dl2;
l=Math.abs(Math.sqrt(Math.pow((ex-sx),2)+Math.pow((ey-sy),2)));
z = Math.floor(l / dl); dl2 = l / z;
if (Math.floor(l) != 0) {
xp = dl2/l*(ex-sx)+sx;
if (ex-sx == 0) {
if (sy<ey) yp = sy+dl2;
else yp = sy-dl2;
} else yp = (sy-ey)/(sx-ex)*xp+sy-(sy-ey)/(sx-ex)*sx;
moveLayerTo(layerName,xp,yp);
tim = setTimeout("utiage('"+layerName+"',"+xp+","+yp+","+ex+","+ey+","+dl+","+sp+"",sp);
} else {
hideLayer(layerName);
setTimeout("hanabi()",100);
}
}
function hanabi() {
for (i=0; i<fireNo*wa; i++) {
zure1 = Math.floor(i/fireNo)%2 == 0 ? 0Math.PI / fireNo);
zure2 = Math.floor(i/fireNo) * space;
ran = (radius1>(fireSize*0.8)) ? Math.floor(Math.random()*20-10) : 0;
radius2 = (radius1 - zure2) > 0 ? radius1 - zure2 : 0;
if ((radius1 - zure2) > fireSize) { hideLayer("fire" + i); }
else { showLayer("fire" + i); }
moveLayerTo("fire" + i, centerX + Math.cos(i * (Math.PI * 2 / fireNo) + zure1) * (radius2) + ran, centerY + Math.sin(i * (Math.PI * 2 / fireNo) + zure1) * (radius2) + ran);
}
radius1 += speed;
if (radius1 > (fireSize + space * wa)) { setHanabiPos(); }
else { setTimeout("hanabi()",10);}
}
function setHanabiPos() {
rev = 0; radius1 = 0;
getWindowSize();
centerX = Math.floor(Math.random() * (win_width - (fireSize + space * wa) * 2) + (fireSize + space * wa));
centerY = Math.floor(Math.random() * (win_height - (fireSize + space * wa) * 2) + (fireSize + space * wa));
if (uti) {
showLayer("fire0";
utiage("fire0",centerX,(win_height + 50),centerX,centerY,speed,10);
} else setTimeout("hanabi()",1000);
}
if (_dom) setHanabiPos();
// -->
</SCRIPT> |
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发表于 12-10-2005 06:32 PM
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