用js實現IBM100年慶徽標競猜功能
js程式碼：function setanswernumber(isanswer,index,divindex)
{
if(parseInt(document.getElementById("answernum").innerHTML)==8)
{
alert('恭喜你全部回答正確！請填寫您的個人聯絡資訊，以便參加我們的抽獎');
BOX_remove('messdiv0');
$('#pic'+index).hide();
$('#nav').hide();
BOX_show('messdiv10');
document.getElementById("errornum").innerHTML='0';
document.getElementById("answernum").innerHTML='0';
var imgs=$('#pics_3d img')
for (var i=0;i<imgs.length;i++ ) {
$('#pic'+i).show();
$("#nav_"+i).show();
}
Nav_3D.ready();
}
else
{
if(isanswer==0)
{
$('#pic'+index).hide();
$('#nav_'+index).hide();
var rightnums=parseInt(document.getElementById("answernum").innerHTML)+1;
$('#answernum').html(rightnums);
document.getElementById("question").innerHTML='';
BOX_remove('messdiv0');
alert('恭喜你回答正確！你已經回答對'+rightnums+'題,繼續加油！');
}
else
{
if(parseInt(document.getElementById("errornum").innerHTML)==2)
{
alert('回答錯誤！您已經答錯3次，競猜重新開始！');
document.getElementById("errornum").innerHTML='0';
document.getElementById("answernum").innerHTML='0';
BOX_remove('messdiv0');
//var imgs=document.getElementById("pics_3d").getElementsByTagName("img");
var imgs=$('#pics_3d img')
for (var i=0;i<imgs.length;i++ ) {
$('#pic'+i).show();
$("#nav_"+i).show();
}
Nav_3D.ready();
}
else
{
alert('對不起，回答錯誤！建議您到"IBM大事年表"中尋找正確答案');
var errornum=parseInt(document.getElementById("errornum").innerHTML)+1;
document.getElementById("errornum").innerHTML=errornum;
}
}
}
}
Item=function(UI){
this.angle=0;
this.UI=UI;
this.update();
};
Item.ini={
axle_w:400,
axle_h:10,
cen_x:500,
cen_y:260
};
Item.prototype.update=function(){
var J=this.UI.style,C=Item.ini,W=C.axle_w,H=C.axle_h,X=C.cen_x,Y=C.cen_y;
var angle=this.angle/180*Math.PI;
var left=Math.cos(angle)*W+X;
var top=Math.sin(angle)*H+Y;
var A=this.angle>270?this.angle-360:this.angle;
var size=400-Math.abs(90-A)*3;
this.UI.width=Math.max(size,120);
var opacity=Math.max(10,size-180);
J.filter='alpha(opacity='+opacity+')';
J.opacity=opacity/100;
J.left=(left-this.UI.offsetWidth/2)+'px';
top=(top-this.UI.offsetHeight)+'px';
J.top=top;
J.zIndex=parseInt(size*100);
};
Nav_3D={
items:[],
dir:1,
index:0,
imageindex:0,
hover:false,
add:function(item){
this.items.push(item);
item.index=this.items.length-1;
item.imageindex=0;
item.UI.onclick=function (){
var J=item.angle,M=Nav_3D;
if(M.uping)return;
if(J==90){
BOX_show('messdiv0','question'+item.index);
};
M.wheel_90(item);
M.index=item.index;
M.imageindex=item.imageindex;
};
item.UI.onmouseover=function (){
if(item.angle==90){
Nav_3D.hover=true;
clearTimeout(Nav_3D.autoTimer);
this.style.cursor='pointer';
};
};
item.UI.onmouseout=function (){
if(item.angle==90){
Nav_3D.hover=false;
Nav_3D.auto();
};
};
return this;
},
wheel_90:function(hot){
if(this.uping)return;
this.uping=true;
var This=this;
this.timer=setInterval(function (){
clearTimeout(This.autoTimer);
var A=hot.angle;
This.dir=A<270&&A>90?-1:1;
if(A==90){
clearInterval(This.timer);
This.uping=false;
This.onEnd(hot);
}
if(A>270)A-=360;
var set=Math.ceil(Math.abs((90-A)*0.1));
for (var i=0;i<This.items.length;i++ ) {
var J=This.items[i];
J.angle+= (set*This.dir);
J.update();
if(J.angle>360)J.angle-=360;
if(J.angle<0)J.angle +=360;
};
},15);
},
ready:function(){
var J=this.items,step=parseInt(360/J.length);
for (var i=0;i<J.length;i++) {J[i].angle=i*step+90;}
this.wheel_90(this.items[0]);
Nav_3D.prevHot=this.items[0].UI;
Nav_3D.setHot();
},
setHot:function(isHot){
if(!this.prevHot)return;
with(this.prevHot.style){
borderColor=isHot!==false?'#CC0000':'#00CCFF';
cursor=isHot!==false?'default':"pointer";
};
return this;
},
auto:function(){
if(document.getElementById("messdiv0").innerHTML.indexOf("IBM")<0)//當彈出層時圖片停止滾動
{
this.index--;
if(this.index<0)this.index=this.items.length-1;
var navli =document.getElementById("nav").getElementsByTagName("li");
for (var j=0; j<navli.length; j++) {
navli[j].className = this.index == j ? 'cur' : '';
}
var J=this.items[this.index];
this.setHot(false).prevHot=J.UI;
this.setHot();
this.wheel_90(J);
}
},
next:function(){
this.imageindex++;
if(this.imageindex>this.items.length-1) this.imageindex=0;
var navli =document.getElementById("nav").getElementsByTagName("li");
for (var j=0; j<navli.length; j++) {
navli[j].className = this.imageindex == j ? 'cur' : '';
}
var J=this.items[this.imageindex];
this.setHot(false).prevHot=J.UI;
this.setHot();
this.wheel_90(J);
},
move : function (picindex) {
var navli =document.getElementById("nav").getElementsByTagName("li");
for (var j=0; j<navli.length; j++) {
navli[j].className = picindex == j ? 'cur' : '';
}
var J=this.items[picindex];
this.setHot(false).prevHot=J.UI;
this.setHot();
this.wheel_90(J);
}
,
onEnd:function(hot){
if(this.hover){
return setTimeout(function(){Nav_3D.onEnd();},200);
}
this.autoTimer=setTimeout(function(){Nav_3D.next();},2000);
},
onStop:function(){
Nav_3D.hover=true;
clearTimeout(Nav_3D.autoTimer);
}
};
var imgs=$("#pics_3d img")
for (var i=0;i<imgs.length;i++ ) {
Nav_3D.add(new Item(imgs[i]))
}
Nav_3D.ready();
//以下函式跟彈出層有關
function BOX_show(e,q)//顯示
{
if(document.getElementById(e)==null)
{
return ;
}
//var selects = document.getElementsByTagName('select');
//for(i = 0; i < selects.length; i++)
//{
// selects[i].style.visibility = "hidden";
// }
ShowQuestion(e,q);
BOX_layout(e);
window.onresize = function(){BOX_layout(e);} //改變窗體重新調整位置
window.onscroll = function(){BOX_layout(e);} //滾動窗體重新調整位置
document.onkeyup = function(event)
{
var evt = window.event || event;
var code = evt.keyCode?evt.keyCode : evt.which;
//alert(code);
if(code == 27)
{
BOX_remove(e);
}
}
}
function BOX_remove(e)//移除
{
window.onscroll = null;
window.onresize = null;
document.getElementById('BOX_overlay').style.display="none";
document.getElementById(e).style.display="none";
var selects = document.getElementsByTagName('select');
for(i = 0; i < selects.length; i++)
{
selects[i].style.visibility = "visible";
}
Nav_3D.auto();
}
function BOX_layout(e)//調整位置
{
var a = document.getElementById(e);
if (document.getElementById('BOX_overlay')==null)//判斷是否新建遮掩層
{
var overlay = document.createElement("div");
overlay.setAttribute('id','BOX_overlay');
//overlay.onclick=function(){BOX_remove(e);};
//a.parentNode.appendChild(overlay);
document.body.appendChild(overlay);
}
document.getElementById('BOX_overlay').ondblclick=function(){BOX_remove(e);};
//取客戶端左上座標，寬，高
var scrollLeft = (document.documentElement.scrollLeft ? document.documentElement.scrollLeft : document.body.scrollLeft);
var scrollTop = (document.documentElement.scrollTop ? document.documentElement.scrollTop : document.body.scrollTop);
var clientWidth;
if (window.innerWidth)
{
clientWidth = window.innerWidth;
// clientWidth = ((Sys.Browser.agent === Sys.Browser.Safari) ? window.innerWidth : Math.min(window.innerWidth, document.documentElement.clientWidth));
}
else
{
clientWidth = document.documentElement.clientWidth;
}
var clientHeight;
if (window.innerHeight)
{
clientHeight = window.innerHeight;
//clientHeight = ((Sys.Browser.agent === Sys.Browser.Safari) ? window.innerHeight : Math.min(window.innerHeight, document.documentElement.clientHeight));
}
else
{
clientHeight = document.documentElement.clientHeight;
}
var bo = document.getElementById('BOX_overlay');
bo.style.left = scrollLeft+'px';
bo.style.top = scrollTop+'px';
bo.style.width = clientWidth+'px';
bo.style.height = clientHeight+'px';
bo.style.display="";
//Popup視窗定位
a.style.position = 'absolute';
a.style.zIndex=999;
a.style.display="";
//a.style.left = scrollLeft+((clientWidth-a.offsetWidth)/2)+'px';
//a.style.top = scrollTop+((clientHeight-a.offsetHeight)/2)+'px';
}
function HiddenButton(e)
{
e.style.visibility='hidden';
e.previousSibling.style.visibility='visible'
}
//給層填充內容
var AjCache=new Object();
function ShowQuestion(tagId,t)
{
var url = t+".htm";
if(AjCache[url] == null)
{
$.ajax({
url: url,
type: 'GET',
success: function(newsstring){
$("#question").html(newsstring);
// document.getElementById("question").innerHTML=newsstring;
//快取到客戶端 url做為查詢值的鍵
AjCache[url]=newsstring;
}
});
}
else
{
document.getElementById("question").innerHTML=AjCache[url];
}
}