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form-to-object (formToObject.js)

Convert HTML forms with all their fields and values to multidimensional JavaScript objects

Workflow status Codecov branch npm version npm downloads

Install

As a npm package:

npm install form_to_object
import formToObject from 'form_to_object';
// or
const formToObject = require('form_to_object');

As a JS script:

<!-- Include minified script (~6kb) -->
<script src="build/formToObject.js"></script>

<!-- jsdelivr (CDN) -->
<script src="
https://cdn.jsdelivr.net/npm/[email protected]/build/bundle/formToObject.min.js
"></script>

Example

  • Using the DOM node id: formToObject('myFormId');
  • Using the actual DOM Node reference: formToObject(document.getElementById('myFormId'));

Resulted value:

{
  "saveSettings": "Save",
  "name": "Serban",
  "race": "orc",
  "settings": {
     "input": "keyboard",
     "video": {
        "resolution": "1024x768",
        "vsync": "on"
     }
  }
}

Good to know:

  1. If <form> fields are found, but they lack of name attribute property, the result will be {} (empty object).
  2. If <form> contains only disabled fields, the result will be {} (empty object). If you force includeDisabledFields then key:value pairs will be returned.
  3. An empty <form> will throw an Error.
  4. In case of an error like non-existing form or invalid selector, an Error will be thrown.

Options

Option name Default Description
includeEmptyValuedElements boolean (default false) Return field names as keys with empty value "" instead of just ignoring them.
w3cSuccessfulControlsOnly boolean (default false) TBA, WIP
selectNameWithEmptyBracketsReturnsArray boolean (default true) <select> field names like name="select[]" always return an array [a,b] instead or array of arrays [0: [a,b]].
checkBoxNameWithEmptyBracketsReturnsArray boolean (default true) <input> checkboxes with field names like name=checkbox[] always return an array [a,b] instead or array of arrays [0: [a,b]].

Browser support

IE 8, Firefox 3.5, Chrome, Safari, Opera 10, every mobile browser.

Example