75 lines
2.2 KiB
JavaScript
Executable File
75 lines
2.2 KiB
JavaScript
Executable File
/**
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* issn validator
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*
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* @link http://formvalidation.io/validators/issn/
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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/issn", ["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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issn: {
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'default': 'Please enter a valid ISSN number'
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}
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}
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});
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FormValidation.Validator.issn = {
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/**
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* Validate ISSN (International Standard Serial Number)
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* Examples:
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* - Valid: 0378-5955, 0024-9319, 0032-1478
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* - Invalid: 0032-147X
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*
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* @see http://en.wikipedia.org/wiki/International_Standard_Serial_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, 'issn');
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if (value === '') {
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return true;
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}
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// Groups are separated by a hyphen or a space
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if (!/^\d{4}\-\d{3}[\dX]$/.test(value)) {
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return false;
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}
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// Replace all special characters except digits and X
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value = value.replace(/[^0-9X]/gi, '');
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var chars = value.split(''),
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length = chars.length,
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sum = 0;
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if (chars[7] === 'X') {
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chars[7] = 10;
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}
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for (var i = 0; i < length; i++) {
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sum += parseInt(chars[i], 10) * (8 - i);
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}
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return (sum % 11 === 0);
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}
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};
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return FormValidation.Validator.issn;
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}));
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