jquery.serializeobject.js

/**
 * Serializes data from a Form element into JSON object.
 *
 * Based on `Yann` code.
 * @author http://css-tricks.com/snippets/jquery/serialize-form-to-json/#comment-210474
 */
(function (factory) {
    if (typeof define === 'function' && define.amd) {
        // AMD. Register as an anonymous module.
        define(['jquery'], factory);
    } else if (typeof exports === 'object') {
        // CommonJS
        factory(require('jquery'));
    } else {
        //Browser globals
        factory(jQuery);
    }
}(function ($) {
    'use strict';
    $.fn.serializeObject = function (options) {
        options = $.extend({strict: false}, options);

        var self = this;
        var json = {};
        var push_counters = {};
        var patterns = {
            "validate": /^[a-zA-Z0-9_\-]*(?:\[(?:\d*|[a-zA-Z0-9_\-]+)\])*$/,
            "key": /[a-zA-Z0-9_\-]+|(?=\[\])/g,
            "push": /^$/,
            "fixed": /^\d+$/,
            "named": /^[a-zA-Z0-9_\-]+$/
        };

        if (options.strict) {
            patterns = {
                "validate": /^[a-zA-Z][a-zA-Z0-9_]*(?:\[(?:\d*|[a-zA-Z0-9_]+)\])*$/,
                "key": /[a-zA-Z0-9_]+|(?=\[\])/g,
                "push": /^$/,
                "fixed": /^\d+$/,
                "named": /^[a-zA-Z0-9_]+$/
            };
        }

        this.build = function (base, key, value) {
            base[key] = value;
            return base;
        };

        this.push_counter = function (key) {
            if (push_counters[key] === undefined) {
                push_counters[key] = 0;
            }
            return push_counters[key]++;
        };

        $.each($(this).serializeArray(), function () {

            // Skip invalid keys
            if (!patterns.validate.test(this.name)) {
                return;
            }

            var k;
            var keys = this.name.match(patterns.key);
            var merge = this.value;
            var reverse_key = this.name;

            while ((k = keys.pop()) !== undefined) {
                // adjust reverse key
                reverse_key = reverse_key.replace(new RegExp("\\[" + k + "\\]$"), '');

                // push
                if (k.match(patterns.push)) {
                    merge = self.build([], self.push_counter(reverse_key), merge);
                }
                // fixed
                else if(k.match(patterns.fixed)){
                    merge = self.build([], k, merge);
                }
                // named
                else if (k.match(patterns.named)) {
                    merge = self.build({}, k, merge);
                }
            }

            json = $.extend(true, json, merge);
        });

        return json;
    };
}));