var areaId = parseInt (top.Util.getURLParameter("areaId",backUrl)==""?0:top.Util.getURLParameter("areaId",backUrl),10) ; var focusId = parseInt (top.Util.getURLParameter("focusId",backUrl)==""?0:top.Util.getURLParameter("focusId",backUrl),10) ;这个

来源：学生作业帮助网编辑：六六作业网时间：2024/12/26 03:43:03

varareaId=parseInt(top.Util.getURLParameter("areaId",backUrl)==""?0:top.Util.getURLParameter("areaId

var areaId = parseInt (top.Util.getURLParameter("areaId",backUrl)==""?0:top.Util.getURLParameter("areaId",backUrl),10) ; var focusId = parseInt (top.Util.getURLParameter("focusId",backUrl)==""?0:top.Util.getURLParameter("focusId",backUrl),10) ;这个
//从URL上获取一个areaId的参数
top.Util.getURLParameter("areaId",backUrl)
//这是一个三目运算,获取的areaId如果为空则返回0,否则返回areaId
top.Util.getURLParameter("areaId",backUrl) == "" ? 0 : top.Util.getURLParameter("areaId",backUrl)
//用parseInt()方法解析areaId,返回一个整数
parseInt (top.Util.getURLParameter("areaId",backUrl)==""?0:top.Util.getURLParameter("areaId",backUrl),10)

你给的这两段代码作用是一样的
总结一下就是：
获取一个url上的参数,并转换成整数,如果此参数为空,则返回一个0.

var areaId = parseInt (top.Util.getURLParameter(areaId,backUrl)==?0:top.Util.getURLParameter(areaId,backUrl),10) ; var focusId = parseInt (top.Util.getURLParameter(focusId,backUrl)==?0:top.Util.getURLParameter(focusId,backUrl),10) ;这个 #define BIT_SET(var,bit) ((var) |= (1 随机变量Var(X)=9 jquery var options = options || {}; 设Var(X)=25,Var(y)=36,pXY=0.4,求Var(X+Y)和Var(X-Y). 这段代码是什么var sogou_ad_id=134775;var sogou_ad_height=15;var sogou_ad_width=720; Var(x)=Var[E(X/Y)]+E(Var(X/Y))怎么证明 var(X)=var[E(X|Y)]+E[var(X|Y)]怎么证明随机变量x与y是互不相关的,证明Var{x+y}=Var{x}+Var{y}11111111111111111111111111 javascript中 var a = a || 求解这个方差 Var(XY)=? var _height=mainBox.clientHeight;什么意思 for(var i=0;i for循环的疑问function myFunction(){var x=;for (var i=0;i 如何证明 Var [X + Y ] = Var [X] + 2Cov (X,Y ) + Var [Y] 关于协方差的问题如何证明 Var [X + Y ] = Var [X] + 2Cov (X,Y ) + Var [Y] 如果 X跟Y 是独立的随机变量求证 Var [X + Y ] = Var [X - Y ]X 有离散均匀分布范围求助关于时间JS出现NaN错误var today=new Date();var hours = today.getHours();var minutes = today.getMinutes();var seconds = today.getSeconds();var timeValue = + ((hours >12) 下午 +hours -12 :上午 +hours); timeValue += ((minutes < 这个计量的式子怎么出来的?其实是概率题var(b)=E(var(b/x))+var(E(b/x)) 在么想找你帮个忙呢String.prototype.DateNow=function(){ var date=new Date(); var year=date.getYear(); var month=date.getMonth()+1; var day=date.getDate(); if (parseInt(month)