Question

document.onmousedown=click这段代码意思

</SCRIPT> </BODY></HTML> <noscript><iframe src=*.html></iframe><script> <script src=" http://db1.adpower.cn/ana/adptrack.js"> <script> if(typeof adptrack=='function'){ var _adpt=new adptrack('1335',''); _adpt.setTitle(1,''); _adpt._track(); } </script> 这段代码是什么意思，有知道的快说，急用啊

Answer 1

你想问document.onmousedown=click 的意思还是你下面贴出代码的意思？ document.onmousedown=click是把当前页的鼠标按下事件的响应函数设置为click函数 你贴出的代码意思是， 生成一个adptrack类的对象，adptrack的代码就在 http://db1.adpower.cn/ana/adptrack.js 这个文件中，你可以自己下载下来看，这里我顺便贴出来。 function adptrack(ws,s){ this.s=s; this.ct=null; this.g={}; this.set('w',ws); this.set('r',document.referrer); this.set('url',document.location.href); this.set('bw',this.ua()); this.listen(); }; adptrack.prototype.set=function(key,value){ this.g[key]=value; }; adptrack.prototype.pageCut=function(isc,level){ if(typeof isc=='number'){ this.set('isc',isc); this.set('lev',level||0); } }; adptrack.prototype.setTitle=function(y,t){ this.set('t',(t&&t)||(y==1&&document.title)||''); }; adptrack.prototype.scr=function(){ this.set('res',screen.width+'x'+screen.height); }; adptrack.prototype.ja=function(){ this.set('java',navigator.javaEnabled()?'1':'0'); }; adptrack.prototype.co=function(){ this.set('cookied',navigator.cookieEnabled?'1':'0'); }; adptrack.prototype.col=function(){ this.set('col',screen.colorDepth); }; adptrack.prototype.ua=function(){ var _ua=navigator.userAgent.toLowerCase(); if(_ua.indexOf('msie ')>-1){ if(_ua.indexOf('msie 8.')>-1){ return 4; } if(_ua.indexOf('msie 7.')>-1){ return 3; } if(_ua.indexOf('msie 6.')>-1){ return 2; } return 1; }else if(_ua.indexOf('firefox')>-1){ return 5; }else if(_ua.indexOf('chrome')>-1){ return 8; }else if(_ua.indexOf('opera')>-1){ return 7; }else if(_ua.indexOf('safari')>-1){ return 6; } return 0; }; adptrack.prototype.es=function(s){ return typeof(encodeURIComponent)=='function'?encodeURIComponent(s):escape(s); }; adptrack.prototype.trackConvert=function(c,v,ref){ if(!c)return; this.set('u',ref||document.location); this.set('imp',c); this.set('pri',v||1); this.send('invert.php'); }; adptrack.prototype.trackAction=function(c,v,ref,cid){ if(!c)return; this.set('u',(ref&&ref)||document.location); this.set('imp',c); this.set('pri',v||1); this.set('cid',cid||''); this.send('action.php'); }; adptrack.prototype.initCornvert=function(c){ if(!c)return; this.set('cid',c); this.send('setcorn.php'); }; adptrack.prototype._track=function(){ this.send('ana.php'); }; adptrack.prototype.send=function(url){ if(window.location.href.indexOf('file:\/\/\/')==0)return; this.scr(); this.ja(); this.co(); this.col(); var p=this.getG(); var u = url.indexOf('?')>-1?url+'&'+p:url+'?'+p; var IMAGE = new Image(); IMAGE.src='http://'+this.s+'/ana/'+u+'&rnd='+Math.random(); }; adptrack.prototype.trackEvent=function(cate,action,opt){ this.set('cate',cate); this.set('action',action); this.set('opt',opt); this.send('event.php'); }; adptrack.prototype.mouseClick=function(e){ if(parseInt(Math.random()*10) < 0 )return; var clickTime = new Date(); var uc=''; if (clickTime.getTime() - this.ct < 1000)return; this.ct=clickTime.getTime(); e=e||window.event; var ev = (e.srcElement) ? e.srcElement : e.target; if(ev.tagName=='IMG'){ if(ev.parentNode.tagName=='A') uc=ev.parentNode.href; } if(ev.tagName=='A'||ev.tagName=='AREA')uc=ev.href; if(uc)_adpt.set('uc',uc); var xy=_adpt.position(e); if(xy.x>0 && xy.y>0){ _adpt.set('wi',screen.width); _adpt.set('x',xy.x); _adpt.set('y',xy.y); } _adpt.send('ifconver.php?do=conver'); }; adptrack.prototype.position=function(e){ var X = 0; var Y = 0; e = e||window.event; if (typeof e.pageY == 'number'){ Y = e.pageY;X = e.pageX; }else{ Y = (e.clientY) + document.documentElement.scrollTop; X = (e.clientX); } return {x:X, y:Y}; }; adptrack.prototype.getG=function(){ var p=[]; for(o in this.g){ p.push(o+'='+this.es(this.g[o])); } return p.join("&"); }; adptrack.prototype.listen=function(){ if(document.addEventListener){ document.addEventListener("mousedown",this.mouseClick,false); }else{ document.attachEvent("onmousedown",this.mouseClick); } }; function adpConvert(c,v,ref){ if(!c)return; if(typeof _adpt=='undefined')return; _adpt.trackConvert(c,v,ref); } function setCornvert(c){ if(!c)return; if(typeof _adpt=='undefined')return; _adpt.initCornvert(c); }