69 lines
2.0 KiB
JavaScript
Executable File
69 lines
2.0 KiB
JavaScript
Executable File
/**
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* ean validator
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*
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* @link http://formvalidation.io/validators/ean/
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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/ean", ["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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ean: {
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'default': 'Please enter a valid EAN number'
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}
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}
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});
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FormValidation.Validator.ean = {
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/**
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* Validate EAN (International Article Number)
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* Examples:
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* - Valid: 73513537, 9780471117094, 4006381333931
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* - Invalid: 73513536
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*
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* @see http://en.wikipedia.org/wiki/European_Article_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, 'ean');
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if (value === '') {
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return true;
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}
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if (!/^(\d{8}|\d{12}|\d{13})$/.test(value)) {
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return false;
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}
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var length = value.length,
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sum = 0,
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weight = (length === 8) ? [3, 1] : [1, 3];
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for (var i = 0; i < length - 1; i++) {
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sum += parseInt(value.charAt(i), 10) * weight[i % 2];
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}
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sum = (10 - sum % 10) % 10;
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return (sum + '' === value.charAt(length - 1));
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}
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};
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return FormValidation.Validator.ean;
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}));
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