천 단위로 콤마 삽입

 

 
var result, 
    pattern;
 
var commna = function (value) {
 
    value = value.toString();
    pattern = /(^[+-]?\d+)(\d{3})/;
 
    while (pattern.test(value)) {
 
        value = value.replace(pattern, '$1' + ',' + '$2');
    }
 
    return value;
}
 
result = comma(123456789);
show(result);