JS_InputREGEXTests.js

module.exports = {
    onlyNumber: function(sample){
        // returns false if input is not a number 
        return /^([0-9]+)$/.test(sample);
    },

    onlyAlphabets: function(sample){
      // returns false if input is not a string of alphabets
        return /^([a-z]+)$/.test(sample);
    },

    alphanumeric: function(sample){
      // returns false if string contains anything other than alphabets or numbers
        return /^([a-zA-Z0-9]+)$/.test(sample);
    },

    password: function(sample){
    /*
        May contain letter and numbers
        May contain blank space
            Must contain at least 1 number and 1 letter
            May contain any of these characters: ._@#$%
            Must have atleast 8 characters
    */
        return /^(?=.*\d)(?=.*[A-Za-z])[0-9A-Za-z ._@#$%]{8,}$/.test(sample);
    },

    person_name: function(sample){
    /*
        Must be atleast 3 characters
        May contain blank spaces
        May contain "." (Dot) symbol only
    */
        return /^([a-zA-Z.\s]+){3,}$/.test(sample.trim());
    },

    email: function(sample){
    /*  Pursuit of a valid email address  */
        return /^[A-Za-z0-9._-]+@[A-Za-z0-9.-]+\.[A-Za-z]{2,4}$/.test(sample);
    },

    street: function(sample){
    /* 
        Must contain atleast 1 alphabet
        May contain alphabets and numbers 
        May contain special symbols such as ._-
        May contain blank spaces
    */
        return /^(?=.*[A-Za-z])[A-Za-z0-9 .,#_-]{3,50}$/.test(sample);
    },

    state: function(sample) {
    /* 
        Must contain atleast 1 alphabet
        Must not contain numbers 
        May contain special symbols such as ._-
        May contain blank spaces
    */
         return /^(?=.*[A-Za-z])[A-Za-z ._-]{3,50}$/.test(sample);
    },

    acct_number: function(sample) {
    /* 
        Must contain atleast 1 alphabet
        Must contain atleast 1 number
        Must not contain any special symbol or blank space
    */
        return /^(?=.*\d)(?=.*[A-Za-z])[0-9A-Za-z]{9,18}$/.test(sample);
    },

    credit_card_type: function(sample){
        var cardWorld = {
            mc: "Mastercard",
            ec: "Eurocard",
            vi: "Visa",
            ax: "American Express",
            dc: "Diners Club",
            bl: "Carte Blanch",
            di: "Discover",
            jcb: "JCB",
            er: "Enroute"
        }
        var flag = false;
        for(var i in cardWorld){
            if(sample == i || sample == cardWorld[i]){
                flag = true;
                break;
            }
        }
        return flag;
    },

    credit_card_number: function(sample, card_type){
        var cardinfo = {
            'mc':'5[1-5][0-9]{14}',
            'ec':'5[1-5][0-9]{14}',
            'vi':'4(?:[0-9]{12}|[0-9]{15})',
            'ax':'3[47][0-9]{13}',
            'dc':'3(?:0[0-5][0-9]{11}|[68][0-9]{12})',
            'bl':'3(?:0[0-5][0-9]{11}|[68][0-9]{12})',
            'di':'6011[0-9]{12}',
            'jcb':'(?:3[0-9]{15}|(2131|1800)[0-9]{11})',
            'er':'2(?:014|149)[0-9]{11}'
        }
        sample = String(sample).replace(/[- ]/g,''); //ignore dashes and whitespaces

        var results = [];
        if(card_type){
            var expr = '^' + cardinfo[card_type.toLowerCase()] + '$';
            return expr ? !!sample.match(expr) : false; // boolean
        }
        else
            return false;

        for(var p in cardinfo){
            if(sample.match('^' + cardinfo[p] + '$')){
                results.push(p);
            }
        }
        return results.length ? results.join('|') : false; // String | boolean
    },

    CVVorCVC:function(sample, cardType){
        var _length;
        switch (cardType.toLowerCase()){
            case 'mc':
            case 'ec':
            case 'vi':
            case 'di':
            case 'dc':
            case 'jcb':
            case 'er':
            case 'bl':
                _length = 3;
                break;
            case 'ax':
                _length = 4;
                break;
        }
        if(/^([0-9]+)$/.test(sample)){
            if(sample.toString().length == _length)
                return true;
        }
        return false;
    },
};