74 lines
2.2 KiB
JavaScript
Executable File
74 lines
2.2 KiB
JavaScript
Executable File
/**
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* imo validator
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*
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* @link http://formvalidation.io/validators/imo/
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* @author https://twitter.com/nghuuphuoc
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* @copyright (c) 2013 - 2015 Nguyen Huu Phuoc
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* @license http://formvalidation.io/license/
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*/
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(function(root, factory) {
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"use strict";
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// AMD module is defined
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if (typeof define === "function" && define.amd) {
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define("validator/imo", ["jquery", "base"], factory);
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} else {
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// planted over the root!
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factory(root.jQuery, root.FormValidation);
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}
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}(this, function ($, FormValidation) {
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FormValidation.I18n = $.extend(true, FormValidation.I18n || {}, {
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'en_US': {
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imo: {
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'default': 'Please enter a valid IMO number'
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}
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}
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});
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FormValidation.Validator.imo = {
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/**
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* Validate IMO (International Maritime Organization)
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* Examples:
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* - Valid: IMO 8814275, IMO 9176187
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* - Invalid: IMO 8814274
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*
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* @see http://en.wikipedia.org/wiki/IMO_Number
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* @param {FormValidation.Base} validator The validator plugin instance
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* @param {jQuery} $field Field element
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* @param {Object} options Can consist of the following keys:
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* - message: The invalid message
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* @returns {Boolean}
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*/
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validate: function(validator, $field, options) {
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var value = validator.getFieldValue($field, 'imo');
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if (value === '') {
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return true;
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}
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if (!/^IMO \d{7}$/i.test(value)) {
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return false;
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}
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// Grab just the digits
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var sum = 0,
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digits = value.replace(/^.*(\d{7})$/, '$1');
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// Go over each char, multiplying by the inverse of it's position
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// IMO 9176187
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// (9 * 7) + (1 * 6) + (7 * 5) + (6 * 4) + (1 * 3) + (8 * 2) = 147
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// Take the last digit of that, that's the check digit (7)
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for (var i = 6; i >= 1; i--) {
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sum += (digits.slice((6 - i), -i) * (i + 1));
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}
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return sum % 10 === parseInt(digits.charAt(6), 10);
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}
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};
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return FormValidation.Validator.imo;
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}));
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