formvalidation/src/js/validator/between.js

The best jQuery plugin to validate form fields. Support Bootstrap, Foundation, Pure, SemanticUI, UIKit and custom frameworks

/**
 * between validator
 *
 * @link        http://formvalidation.io/validators/between/
 * @author      https://twitter.com/nghuuphuoc
 * @copyright   (c) 2013 - 2015 Nguyen Huu Phuoc
 * @license     http://formvalidation.io/license/
 */
(function($) {
    FormValidation.I18n = $.extend(true, FormValidation.I18n || {}, {
        'en_US': {
            between: {
                'default': 'Please enter a value between %s and %s',
                notInclusive: 'Please enter a value between %s and %s strictly'
            }
        }
    });

    FormValidation.Validator.between = {
        html5Attributes: {
            message: 'message',
            min: 'min',
            max: 'max',
            inclusive: 'inclusive'
        },

        enableByHtml5: function($field) {
            if ('range' === $field.attr('type')) {
                return {
                    min: $field.attr('min'),
                    max: $field.attr('max')
                };
            }

            return false;
        },

        /**
         * Return true if the input value is between (strictly or not) two given numbers
         *
         * @param {FormValidation.Base} validator The validator plugin instance
         * @param {jQuery} $field Field element
         * @param {Object} options Can consist of the following keys:
         * - min
         * - max
         *
         * The min, max keys define the number which the field value compares to. min, max can be
         *      - A number
         *      - Name of field which its value defines the number
         *      - Name of callback function that returns the number
         *      - A callback function that returns the number
         *
         * - inclusive [optional]: Can be true or false. Default is true
         * - message: The invalid message
         * @returns {Boolean|Object}
         */
        validate: function(validator, $field, options) {
            var value = validator.getFieldValue($field, 'between');
            if (value === '') {
                return true;
            }

			value = this._format(value);
            if (!$.isNumeric(value)) {
                return false;
            }

            var locale   = validator.getLocale(),
                min      = $.isNumeric(options.min) ? options.min : validator.getDynamicOption($field, options.min),
                max      = $.isNumeric(options.max) ? options.max : validator.getDynamicOption($field, options.max),
                minValue = this._format(min),
                maxValue = this._format(max);

            value = parseFloat(value);
			return (options.inclusive === true || options.inclusive === undefined)
                    ? {
                        valid: value >= minValue && value <= maxValue,
                        message: FormValidation.Helper.format(options.message || FormValidation.I18n[locale].between['default'], [min, max])
                    }
                    : {
                        valid: value > minValue  && value <  maxValue,
                        message: FormValidation.Helper.format(options.message || FormValidation.I18n[locale].between.notInclusive, [min, max])
                    };
        },

        _format: function(value) {
            return (value + '').replace(',', '.');
        }
    };
}(jQuery));