正则表达式不适用于验证信用卡到期信息

Question

I have a regex expression which matches the expiry date on credit card Format I am looking for is mm/yy. Following is my function in javascript

validateCreditCardExpiry: function(expiry){
        if(this.isEmpty(expiry))
        {
            return false;
        }
        var regex = /^(0[1-9]|1[0-2])\/?([0-9]{2})$/;
        if(!regex.test(expiry))
        {
            return false
        }
        return true
    }

I have tried using the above on string such as 12/33 which returns false. Can some one help me out. Thanks

Answer 1

In addition to my comment ( see your working regex here ), you can very well shorten your function:

validateCreditCardExpiry: function(expiry){
    if (expiry) {
        var regex = /^(0[1-9]|1[0-2])\/?([0-9]{2})$/;
        if(regex.test(expiry)) return true;
    }
    return false;
}

Or - as @anubhava pointed out in the comments, even shorter:

validateCreditCardExpiry: function(expiry){
    return /^(0[1-9]|1[0-2])\/?[0-9]{2}$/.test(expiry);
}

Answer 2

The above regex expression is working correctly. I somehow was introducing spaces between '/'. that was the problem