多年后的香草ajs (es6)

let body = new FormData()

body.set('key1', 'value AA')

body.set('key2', 'value BB')

let data = [...body.keys()].reduce( (acc, key, idx) => {
    acc[key] = body.get(key)
    return acc
} , {} )

console.log(JSON.stringify(data)) // {key1: 'value AA', key2: 'value BB'}

如果您正在使用lodash，可以使用fropairs简单地完成

import {fromPairs} from 'lodash';

const object = fromPairs(Array.from(formData.entries()));

这篇文章已经有一年了……但是，我真的非常非常喜欢ES6 @dzuc的答案。然而，它是不完整的，不能够处理多个选择或复选框。已经指出了这一点，并提供了代码解决方案。我发现它们很笨重，而且没有优化。所以我写了两个基于@dzuc的版本来处理这些情况:

对于ASP样式的表单，多个项目名称可以简单重复。

let r=Array.from(fd).reduce(
  (o , [k,v]) => (
     (!o[k])
     ? {...o , [k] : v}
     : {...o , [k] : [...o[k] , v]}
   )
   ,{}
);
let obj=JSON.stringify(r);

一行高手版:

Array.from(fd).reduce((o,[k,v])=>((!o[k])?{...o,[k]:v}:{...o,[k]:[...o[k],v]}),{});

对于PHP样式表单，其中多个项目名称必须有一个[]后缀。

let r=Array.from(fd).reduce(
  (o , [k,v]) => (
    (k.split('[').length>1)
    ? (k=k.split('[')[0]
      , (!o[k])
      ? {...o , [k] : [v]}
      : {...o , [k] : [...o[k] , v ]}
    )
    : {...o , [k] : v}
  )
  ,{}
);
let obj=JSON.stringify(r);

一行高手版:

Array.from(fd).reduce((o,[k,v])=>((k.split('[').length>1)?(k=k.split('[')[0],(!o[k])?{...o,[k]:[v]}:{...o,[k]:[...o[k],v]}):{...o,[k]:v}),{});

支持多级数组的PHP表单扩展。

Since last time I wrote the previous second case, at work it came a case that the PHP form has checkboxes on multi-levels. I wrote a new case to support previous case and this one. I created a snippet to better showcase this case, the result show on the console for this demo, modify this to your need. Tried to optimize it the best I could without compromising performance, however, it compromise some human readability. It takes advantage that arrays are objects and variables pointing to arrays are kept as reference. No hotshot for this one, be my guest.

let nosubmit = (e) => { e.preventDefault(); const f = Array.from(new FormData(e.target)); const obj = f.reduce((o, [k, v]) => { let a = v, b, i, m = k.split('['), n = m[0], l = m.length; if (l > 1) { a = b = o[n] || []; for (i = 1; i < l; i++) { m[i] = (m[i].split(']')[0] || b.length) * 1; b = b[m[i]] = ((i + 1) == l) ? v : b[m[i]] || []; } } return { ...o, [n]: a }; }, {}); console.log(obj); } document.querySelector('#theform').addEventListener('submit', nosubmit, {capture: true}); <h1>Multilevel Form</h1> <form action="#" method="POST" enctype="multipart/form-data" id="theform"> <input type="hidden" name="_id" value="93242" /> <input type="hidden" name="_fid" value="45c0ec96929bc0d39a904ab5c7af70ef" /> <label>Select: <select name="uselect"> <option value="A">A</option> <option value="B">B</option> <option value="C">C</option> </select> </label> <br /><br /> <label>Checkboxes one level:<br/> <input name="c1[]" type="checkbox" checked value="1"/>v1 <input name="c1[]" type="checkbox" checked value="2"/>v2 <input name="c1[]" type="checkbox" checked value="3"/>v3 </label> <br /><br /> <label>Checkboxes two levels:<br/> <input name="c2[0][]" type="checkbox" checked value="4"/>0 v4 <input name="c2[0][]" type="checkbox" checked value="5"/>0 v5 <input name="c2[0][]" type="checkbox" checked value="6"/>0 v6 <br/> <input name="c2[1][]" type="checkbox" checked value="7"/>1 v7 <input name="c2[1][]" type="checkbox" checked value="8"/>1 v8 <input name="c2[1][]" type="checkbox" checked value="9"/>1 v9 </label> <br /><br /> <label>Radios: <input type="radio" name="uradio" value="yes">YES <input type="radio" name="uradio" checked value="no">NO </label> <br /><br /> <input type="submit" value="Submit" /> </form>

如果你想要json字符串:

var jsonStr =  JSON.stringify($('#formId').serializeObject());

如果你想要一个json对象

var jsonObj =  JSON.parse(JSON.stringify($('#formId').serializeObject()));

简单易用的功能

我已经为此创建了一个函数

function FormDataToJSON(FormElement){    
    var formData = new FormData(FormElement);
    var ConvertedJSON= {};
    for (const [key, value]  of formData.entries())
    {
        ConvertedJSON[key] = value;
    }

    return ConvertedJSON
}

示例使用

var ReceivedJSON = FormDataToJSON(document.getElementById('FormId'));

在这段代码中，我使用for循环创建了空JSON变量，我在每个迭代中都使用了从formData Object到JSON key的键。

你在GitHub上找到我的JS库中的此代码，如果需要改进，请建议我，我已经在这里放置了代码https://github.com/alijamal14/Utilities/blob/master/Utilities.js

这里有一种更函数化的方式，不需要使用库。

Array.from(formData.entries()).reduce((memo, [key, value]) => ({
  ...memo,
  [key]: value,
}), {});

例子:

. getelementbyid(“foobar”)。addEventListener('submit'， (e) => { e.preventDefault (); const formData = new formData (e.target); const data = Array.from(formData.entries()).reduce((memo， [key, value]) => ({ 备忘录, (例子):值, }, {}); . getelementbyid(“输出”)。innerHTML = JSON.stringify(数据); })； <形式id =“foobar”> <input name='baz' /> <input type='submit' /> > < /形式 <pre id='output'>输入一些值并提交</pre>