Mask Credit Card xxx-xxxx-xxxx-4567

creditcardmask.js

app.filter('creditcard', function(){
    return function(cc, maskChar, sep){
        if(!sep)
            sep = '-';
        
        var maskedNum = Array(cc.length - 3).join(maskChar) + cc.substr(cc.length - 4, 4);
        maskedNum = maskedNum.substring(0, 4) + sep +
                    maskedNum.substring(4, 8) + sep +
                    maskedNum.substring(8, 12) + sep +
                    maskedNum.substring(12, 16);
        return maskedNum;
    }
});