Bangladeshi Mobile Number validation in javascript using regex patter

bd-mobile-number-validation.js

// phone numbers

var numbers = ['01988123456','+8801988123456','8801988123456','01788123456','+8801788123456','8801788123456','01688123456','+8801688123456','8801688123456','01388123456','+8801388123456','8801588123456','01588123456','8801888123456','01888123456'];

function validate_bdnumber(number)
{
	pattern = /^\+?(88)?0(19|14|17|13|18|16|15)\d{8}$/
	return number.match(pattern) ? true : false;
}

numbers.forEach(function(number){
	console.log(validate_bdnumber(number));
});