User Contributed Rules

###Please feel free to contribute your own Custom Rules!###

####Example Rule####

ko.validation.rules['exampleRule'] = {
    validator: function(val, otherVal){
        /* awesome logic */
    },
    message: 'Sorry Chief, {0} this is not Valid'
};

####Change Limit Rule####

/**
 * Limits the maximum amount a numeric value can be changed.
 * Parameters: maxChange: <The max valid value change from base value>,
 *             baseValueAccessor: <A function to access the base value>
 * 
 * Example: 'Distance can change a maximum of 10'
 * var initDistance = 5;
 * this.distance.extend({
 *     changeLimit:{
 *         maxChange:10,
 *         baseValueAccessor:function () {
 *             return initDistance;
 *         }
 *     }
 * });
 * 
 */
ko.validation.rules['changeLimit'] = {
    validator: function(val, options) {
        return Math.abs(val - options.baseValueAccessor()) <= options.maxChange;
    },
    message: 'Change limit exeeded'
};