FormData to json

var object = {};
formData.forEach(function(value, key){
    object[key] = value;
});
var json = JSON.stringify(object);

// Or ES6 arrow function
var object = {};
formData.forEach((value, key) => object[key] = value);
var json = JSON.stringify(object);

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4.13

Robin Hood 95 points

                                    function buildFormData(formData, data, parentKey) {
  if (data &amp;&amp; typeof data === 'object' &amp;&amp; !(data instanceof Date) &amp;&amp; !(data instanceof File)) {
    Object.keys(data).forEach(key =&gt; {
      buildFormData(formData, data[key], parentKey ? `${parentKey}[${key}]` : key);
    });
  } else {
    const value = data == null ? '' : data;

    formData.append(parentKey, value);
  }
}

function jsonToFormData(data) {
  const formData = new FormData();
  
  buildFormData(formData, data);
  
  return formData;
}

const my_data = {
  num: 1,
  falseBool: false,
  trueBool: true,
  empty: '',
  und: undefined,
  nullable: null,
  date: new Date(),
  name: 'str',
  another_object: {
    name: 'my_name',
    value: 'whatever'
  },
  array: [
    {
      key1: {
        name: 'key1'
      }
    }
  ]
};

jsonToFormData(my_data)

Thank you! 10

4.13 (8 Votes)

Parax 80 points

                                    var object = {};
formData.forEach(function(value, key){
    object[key] = value;
});
var json = JSON.stringify(object);

Thank you! 9

4 (9 Votes)

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