JS 正则表达式匹配指定字符串

Question

例如有一串字符串：str="rea,ter,get,opt,rea,rea,get,opt,ppp,rea,test"
有两个变量：var sTmp="rea,";var sTMP=",get"现在想把str中符合两个变量的字符串全部替换成""，正则表达式如何写？

Answer 1

不明白 
str.replace(sTmp,"").replace(sTMP,"")
楼主是不是还有什么其他玄机？

Answer 2

var str="rea,ter,get,opt,rea,rea,get,opt,ppp,rea,test";
var sTmp="rea,";
var sTMP=",get";
//现在想把str中符合两个变量的字符串全部替换成""
var v=str.replace(/rea,/g,"\"\"");  
v=v.replace(/,get/g,"\"\"");  
//var v=str.replace(/\,get|rea\,/g,"") ; //对连着的rea,get 后一个不能去掉
//var v=str.replace(/\,get|rea\,|get/g,"") ; //对连着的rea,get 回出现两个连着的逗号alert(str+"\n"+v);

Answer 3

怎么在正则表示引入变量呢？如：
var v=str.replace(/sTmp/g,"\"\"");  
v=v.replace(/sTMP/g,"\"\"");  

Answer 4

上面理解错你的意思了,修改一下,var str="rea,ter,get,opt,rea,rea,get,opt,ppp,rea,test";
var sTmp="rea,";
//var sTMP=",get";
var sTMP="get,";
var v=str.replace(/get\,|rea\,/g,"") ;
alert(str+"\n"+v);也可以修改为
var str="rea,ter,get,opt,rea,rea,get,opt,ppp,rea,test";
var sTmp="rea,";
var sTMP=",get";
var v=str.replace(/get|rea/g,"") ;
v=v.replace(/\,\,\,/g,",").replace(/\,\,/g,",");
alert(str+"\n"+v);

Answer 5

var re=new RegExp(sTmp,"g"); 
str=str.replace(re,"");
var re=new RegExp(sTMP,"g"); 
str=str.replace(re,"");这样最简单。散分

Answer 6

str="rea,ter,get,opt,rea,rea,get,opt,ppp,rea,test"
var sTmp="rea";var sTMP="get"
var reg=new RegExp(",?"+sTmp+"[,$]",g);
return str.replace(reg,",");