JS问题

Question

if (url.indexOf("Page=")==-1) {
     CurrPage=1;
   } 
   else {
     re=/(\S.*)(Page=\d*)(\S.*|\S*)/g;   
     CurrentPage=url.replace(re,"$2"); 
     url=url.replace("&"+CurrentPage,""); 
     url=url.replace(CurrentPage+"&",""); 
     url=url.replace(CurrentPage,"");      
     CurrentPage=CurrentPage.replace("Page=","")
     //var re=/(?:\S{1,}Page=|\D.*)/g;   
     //var CurrentPage=url.replace(re,"");  
     //url=url.replace("&page="+CurrentPage,"");
     //url=url.replace("page="+CurrentPage+"&",""); 
     //url=url.replace("page="+CurrentPage,"");  
     CurrPage=CheckNum(CurrentPage,1)  
   }      这段代码中的re=/(\S.*)(Page=\d*)(\S.*|\S*)/g;  是什么意思,请高手解释一下,越详细越好,谢谢

Answer 1

\S 是非空字符  \d是数字  .是任意字符
re=/(\S.*)(Page=\d*)(\S.*|\S*)/g
匹配从非空字符开始，后面跟着任意数量的任意字符，接着是Page=任意数量的数字，最后是非空字符接任意多个任意字符或者任意多个非空字符