Jscript的number_format函数

 

function number_format(s)...{ 
         if(/[^0-9.-]/.test(s)) return "invalid value"; 
         s=s.replace(/^(d*)$/,"$1."); 
         s=(s+"00").replace(/(d*.dd)d*/,"$1"); 
         s=s.replace(".",","); 
        var re=/(d)(d...{3},)/; 
        while(re.test(s)) 
                s=s.replace(re,"$1,$2"); 
        s=s.replace(/,(dd)$/,".$1"); 
       return s.replace(/^./,"0.") 
} 
alert(number_format('-123456.789'));