如果您想将表单转换为javascript对象，那么最简单的解决方案（此时）是使用jQuery的each和serializArray函数方法。

$.fn.serializeObject = function() {

  var form = {};
  $.each($(this).serializeArray(), function (i, field) {
    form[field.name] = field.value || "";
  });

  return form;
};

GitHub上托管的插件：https://github.com/tfmontague/form-object/blob/master/README.md

可与Bower一起安装：船首装置git://github.com/tfmontague/form-object.git

这里有一种非jQuery方法：

    var getFormData = function(form) {
        //Ignore the submit button
        var elements = Array.prototype.filter.call(form.elements, function(element) {
            var type = element.getAttribute('type');
            return !type || type.toLowerCase() !== 'submit';
        });

您可以这样使用：

function() {

    var getFormData = function(form) {
        //Ignore the submit button
        var elements = Array.prototype.filter.call(form.elements, function(element) {
            var type = element.getAttribute('type');
            return !type || type.toLowerCase() !== 'submit';
        });

        //Make an object out of the form data: {name: value}
        var data = elements.reduce(function(data, element) {
            data[element.name] = element.value;
            return data;
        }, {});

        return data;
    };

    var post = function(action, data, callback) {
        var request = new XMLHttpRequest();
        request.onload = callback;
        request.open('post', action);
        request.setRequestHeader("Content-Type", "application/json;charset=UTF-8");
        request.send(JSON.stringify(data), true);
        request.send();
    };

    var submit = function(e) {
        e.preventDefault();
        var form = e.target;
        var action = form.action;
        var data = getFormData(form);
        //change the third argument in order to do something
        //more intersting with the response than just print it
        post(action, data, console.log.bind(console));
    }

    //change formName below
    document.formName.onsubmit = submit;

})();

使用此项：

var sf = $('#mainForm').serialize(); // URL encoded string
sf = sf.replace(/"/g, '\"');         // Be sure all "s are escaped
sf = '{"' + sf.replace(/&/g, '","'); // Start "object", replace tupel delimiter &
sf = sf.replace(/=/g, '":"') + '"}'; // Replace equal sign, add closing "object"

// Test the "object"
var formdata = eval("(" + sf + ")"); 
console.log(formdata);

即使在非常复杂的形式上，它也像一种魅力。

这是对Tobias Cohen函数的改进，该函数在多维数组中运行良好：

http://jsfiddle.net/BNnwF/2/

然而，这不是一个jQuery插件，但如果您想这样使用它，只需几秒钟就可以将它变成一个：只需替换函数声明包装器：

function serializeFormObject(form)
{
    ...
}

具有：

$.fn.serializeFormObject = function()
{
    var form = this;
    ...
};

我想这与梅斯克的解决方案相似，因为它做了相同的事情，但我认为这有点干净和简单。我还将macek的测试用例输入添加到小提琴中，并添加了一些额外的输入。到目前为止，这对我来说很好。

function serializeFormObject(form)
{
    function trim(str)
    {
        return str.replace(/^\s+|\s+$/g,"");
    }

    var o = {};
    var a = $(form).serializeArray();
    $.each(a, function() {
        var nameParts = this.name.split('[');
        if (nameParts.length == 1) {
            // New value is not an array - so we simply add the new
            // value to the result object
            if (o[this.name] !== undefined) {
                if (!o[this.name].push) {
                    o[this.name] = [o[this.name]];
                }
                o[this.name].push(this.value || '');
            } else {
                o[this.name] = this.value || '';
            }
        }
        else {
            // New value is an array - we need to merge it into the
            // existing result object
            $.each(nameParts, function (index) {
                nameParts[index] = this.replace(/\]$/, '');
            });

            // This $.each merges the new value in, part by part
            var arrItem = this;
            var temp = o;
            $.each(nameParts, function (index) {
                var next;
                var nextNamePart;
                if (index >= nameParts.length - 1)
                    next = arrItem.value || '';
                else {
                    nextNamePart = nameParts[index + 1];
                    if (trim(this) != '' && temp[this] !== undefined)
                        next = temp[this];
                    else {
                        if (trim(nextNamePart) == '')
                            next = [];
                        else
                            next = {};
                    }
                }

                if (trim(this) == '') {
                    temp.push(next);
                } else
                    temp[this] = next;

                temp = next;
            });
        }
    });
    return o;
}

我的库phery中的代码有一个序列化例程，可以处理非常复杂的表单（如演示中所示https://github.com/pocesar/phery/blob/master/demo.php#L1664），而且不是一刀切。它实际上检查每个字段的类型。例如，单选框与范围不同，与keygen不同，与select multiple不同。我的功能涵盖了这一切，你可以看到它在https://github.com/pocesar/phery/blob/master/phery.js#L1851.

serializeForm:function (opt) {
    opt = $.extend({}, opt);

    if (typeof opt['disabled'] === 'undefined' || opt['disabled'] === null) {
        opt['disabled'] = false;
    }
    if (typeof opt['all'] === 'undefined' || opt['all'] === null) {
        opt['all'] = false;
    }
    if (typeof opt['empty'] === 'undefined' || opt['empty'] === null) {
        opt['empty'] = true;
    }

    var
        $form = $(this),
        result = {},
        formValues =
            $form
                .find('input,textarea,select,keygen')
                .filter(function () {
                    var ret = true;
                    if (!opt['disabled']) {
                        ret = !this.disabled;
                    }
                    return ret && $.trim(this.name);
                })
                .map(function () {
                    var
                        $this = $(this),
                        radios,
                        options,
                        value = null;

                    if ($this.is('[type="radio"]') || $this.is('[type="checkbox"]')) {
                        if ($this.is('[type="radio"]')) {
                            radios = $form.find('[type="radio"][name="' + this.name + '"]');
                            if (radios.filter('[checked]').size()) {
                                value = radios.filter('[checked]').val();
                            }
                        } else if ($this.prop('checked')) {
                            value = $this.is('[value]') ? $this.val() : 1;
                        }
                    } else if ($this.is('select')) {
                        options = $this.find('option').filter(':selected');
                        if ($this.prop('multiple')) {
                            value = options.map(function () {
                                return this.value || this.innerHTML;
                            }).get();
                        } else {
                            value = options.val();
                        }
                    } else {
                        value = $this.val();
                    }

                    return {
                        'name':this.name || null,
                        'value':value
                    };
                }).get();

    if (formValues) {
        var
            i,
            value,
            name,
            $matches,
            len,
            offset,
            j,
            fields;

        for (i = 0; i < formValues.length; i++) {
            name = formValues[i].name;
            value = formValues[i].value;

            if (!opt['all']) {
                if (value === null) {
                    continue;
                }
            } else {
                if (value === null) {
                    value = '';
                }
            }

            if (value === '' && !opt['empty']) {
                continue;
            }

            if (!name) {
                continue;
            }

            $matches = name.split(/\[/);

            len = $matches.length;

            for (j = 1; j < len; j++) {
                $matches[j] = $matches[j].replace(/\]/g, '');
            }

            fields = [];

            for (j = 0; j < len; j++) {
                if ($matches[j] || j < len - 1) {
                    fields.push($matches[j].replace("'", ''));
                }
            }

            if ($matches[len - 1] === '') {
                offset = assign_object(result, fields, [], true, false, false);

                if (value.constructor === Array) {
                    offset[0][offset[1]].concat(value);
                } else {
                    offset[0][offset[1]].push(value);
                }
            } else {
                assign_object(result, fields, value);
            }
        }
    }

    return result;
}

它是我的库phery的一部分，但可以移植到您自己的项目中。它在应该有数组的地方创建数组，从select、normalize复选框等选项中获取正确的选择选项。如果要将其转换为JSON（真正的JSON字符串），只需执行JSON.stringify（$（'form'）.serializeForm（））；

此函数应处理多维数组以及多个同名元素。

到目前为止，我已经使用了几年：

jQuery.fn.serializeJSON=function() {
  var json = {};
  jQuery.map(jQuery(this).serializeArray(), function(n, i) {
    var _ = n.name.indexOf('[');
    if (_ > -1) {
      var o = json;
      _name = n.name.replace(/\]/gi, '').split('[');
      for (var i=0, len=_name.length; i<len; i++) {
        if (i == len-1) {
          if (o[_name[i]]) {
            if (typeof o[_name[i]] == 'string') {
              o[_name[i]] = [o[_name[i]]];
            }
            o[_name[i]].push(n.value);
          }
          else o[_name[i]] = n.value || '';
        }
        else o = o[_name[i]] = o[_name[i]] || {};
      }
    }
    else {
      if (json[n.name] !== undefined) {
        if (!json[n.name].push) {
          json[n.name] = [json[n.name]];
        }
        json[n.name].push(n.value || '');
      }
      else json[n.name] = n.value || '';      
    }
  });
  return json;
};