Replace UTF8 javascript - Bỏ dấu tiếng việt trong javascrtipt

    str= str.toLowerCase();    str= str.replace(/à|á|ạ|ả|ã|â|ầ|ấ|ậ|ẩ|ẫ|ă|ằ|ắ|ặ|ẳ|ẵ/g,"a");    str= str.replace(/è|é|ẹ|ẻ|ẽ|ê|ề|ế|ệ|ể|ễ/g,"e");    str= str.replace(/ì|í|ị|ỉ|ĩ/g,"i");    str= str.replace(/ò|ó|ọ|ỏ|õ|ô|ồ|ố|ộ|ổ|ỗ|ơ|ờ|ớ|ợ|ở|ỡ/g,"o");    str= str.replace(/ù|ú|ụ|ủ|ũ|ư|ừ|ứ|ự|ử|ữ/g,"u");    str= str.replace(/ỳ|ý|ỵ|ỷ|ỹ/g,"y");    str= str.replace(/đ/g,"d");