Use:

function form_to_json (selector) {
  var ary = $(selector).serializeArray();
  var obj = {};
  for (var a = 0; a < ary.length; a++) obj[ary[a].name] = ary[a].value;
  return obj;
}

输出：

{"myfield": "myfield value", "passwordfield": "mypasswordvalue"}

这是一个使用reduce的单行。Reduce是一个函数函数，它获取传递函数的返回值，并在下一次迭代中将其与列表中的第n个值一起传递回传递函数。

$('#formid').serializeArray().reduce((o,p) => ({...o, [p.name]: p.value}))

我们必须使用一些技巧来实现这一点：

…o（扩展语法）插入o中的所有键：值对包装我们在（）中返回的对象，以将其与表示函数的｛｝区分开来将密钥（p.name）换行为[]

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;

})();

此代码转换并保存输入类型，而不是全部转换为字符串：

jQuery.fn.serializeForm = function () {
    var form = this.get(0);
    var i = [];
    var ret = {};
    for (i = form.elements.length - 1; i >= 0; i = i - 1) {
        if (form.elements[i].name === "") {
            continue;
        }
        var name = form.elements[i].name;
        switch (form.elements[i].nodeName) {
            case 'INPUT':
                switch (form.elements[i].type) {
                    case 'text':
                    case 'tel':
                    case 'email':
                    case 'hidden':
                    case 'password':
                        ret[name] = encodeURIComponent(form.elements[i].value);
                        break;
                    case 'checkbox':
                    case 'radio':
                        ret[name] = form.elements[i].checked;
                        break;
                    case 'number':
                        ret[name] = parseFloat(form.elements[i].value);
                        break;
                }
                break;
            case 'SELECT':
            case 'TEXTAREA':
                ret[name] = encodeURIComponent(form.elements[i].value);
                break;
        }
    }
    return ret;
};

例如，这是输出：

Day: 13
Key: ""
Month: 5
OnlyPayed: true
SearchMode: "0"
Year: 2021

而不是

Day: "13"
Key: ""
Month: "5"
OnlyPayed: "true"
SearchMode: "0"
Year: "2021"

像boss一样将表单转换为JSON

目前的来源是GitHub和Bower。

$bower安装jquery序列化对象

以下代码现已弃用。

以下代码可以处理所有类型的输入名称；按照你的预期处理它们。

例如：

<!-- All of these will work! -->
<input name="honey[badger]" value="a">
<input name="wombat[]" value="b">
<input name="hello[panda][]" value="c">
<input name="animals[0][name]" value="d">
<input name="animals[0][breed]" value="e">
<input name="crazy[1][][wonky]" value="f">
<input name="dream[as][vividly][as][you][can]" value="g">

// Output
{
  "honey":{
    "badger":"a"
  },
  "wombat":["b"],
  "hello":{
    "panda":["c"]
  },
  "animals":[
    {
      "name":"d",
      "breed":"e"
    }
  ],
  "crazy":[
    null,
    [
      {"wonky":"f"}
    ]
  ],
  "dream":{
    "as":{
      "vividly":{
        "as":{
          "you":{
            "can":"g"
          }
        }
      }
    }
  }
}

用法

$('#my-form').serializeObject();

魔法（JavaScript）

(function($){
    $.fn.serializeObject = function(){

        var self = this,
            json = {},
            push_counters = {},
            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,
                keys = this.name.match(patterns.key),
                merge = this.value,
                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;
    };
})(jQuery);

我更喜欢这种方法，因为：您不必遍历2个集合，如果需要，您可以获取除“name”和“value”之外的其他内容，并且可以在将值存储在对象中之前对其进行清理（例如，如果您有不希望存储的默认值）。

$.formObject = function($o) {
    var o = {},
        real_value = function($field) {
            var val = $field.val() || "";

            // additional cleaning here, if needed

            return val;
        };

    if (typeof o != "object") {
        $o = $(o);
    }

    $(":input[name]", $o).each(function(i, field) {
        var $field = $(field),
            name = $field.attr("name"),
            value = real_value($field);

        if (o[name]) {
            if (!$.isArray(o[name])) {
                o[name] = [o[name]];
            }

            o[name].push(value);
        }

        else {
            o[name] = value;
        }
    });

    return o;
}

使用方式如下：

var obj = $.formObject($("#someForm"));

仅在Firefox中测试。