Chaining validators for javascript

Why this package?

• Simple
• Lightweight
• Extensible

Usage

validate = require('./vchains.js').validate;

console.log(
    validate('4276-8010-XXXX-5090').isCard('It is not credit card number!').error('Credit card number is valid.')
);

Register new validation method

validate = require('./vchains.js').validate;

console.log(
    validate('My string').use('localTest', function(c, msg){
        if(this.value.indexOf(c) >= 0) return msg || 'Error in localTest!';
    }).localTest('s').error('No error :)')
); // Will print "Error in localTest!"

test() method is accessible only for this object. If you want to extend validator class, you need to

Register new validation method globally

vchains = require('./vchains.js');
validate = vchains.validate;

vchains.use({ 'globalTest': function(msg){
    if(this.value.indexOf(' ') >= 0) return msg || 'Value contains space!';
}});

console.log(
    validate('Hello, world!').globalTest().error()
); // Will print "Value contains space!"