str="你要的串"
str=str.replace(/[B]/ig,"");
str=str.replace(/[\/B]/ig,"");
str=str.replace(/[UPLOAD=]/ig,"");
str=str.replace(/[\/UPLOAD]/ig,"");
str=str.replace(/[B]/ig,"");
str=str.replace(/[\/B]/ig,"");
str=str.replace(/[UPLOAD=]/ig,"");
str=str.replace(/[\/UPLOAD]/ig,"");
str="sdfddf[UPLOAD=]dfd[/UPLOAD]";
str=str.replace(/\[B\]/ig,"");
str=str.replace(/\[\/B\]/ig,"");
str=str.replace(/\[UPLOAD=\]/ig,"");
str=str.replace(/\[\/UPLOAD\]/ig,"");
alert(str);