Javascript form input list

HTMLFormElement: elements property

The HTMLFormElement property elements returns an HTMLFormControlsCollection listing all the form controls contained in the element.

Independently, you can obtain just the number of form controls using the length property.

You can access a particular form control in the returned collection by using either an index or the element’s name or id attributes.

Prior to HTML 5, the returned object was an HTMLCollection , on which HTMLFormControlsCollection is based.

Note: Similarly, you can get a list of all of the forms contained within a given document using the document’s forms property.

Value

An HTMLFormControlsCollection containing all non-image controls in the form. This is a live collection; if form controls are added to or removed from the form, this collection will update to reflect the change.

The form controls in the returned collection are in the same order in which they appear in the form by following a preorder, depth-first traversal of the tree. This is called tree order.

Only the following elements are returned:

Examples

Quick syntax example

In this example, we see how to obtain the list of form controls as well as how to access its members by index and by name or ID.

form id="my-form"> label> Username: input type="text" name="username" /> label> label> Full name: input type="text" name="full-name" /> label> label> Password: input type="password" name="password" /> label> form> 

const inputs = document.getElementById("my-form").elements; const inputByIndex = inputs[0]; const inputByName = inputs["username"]; 

Accessing form controls

This example gets the form’s element list, then iterates over the list, looking for elements of type «text» so that some form of processing can be performed on them.

const inputs = document.getElementById("my-form").elements; // Iterate over the form controls for (let i = 0; i  inputs.length; i++)  if (inputs[i].nodeName === "INPUT" && inputs[i].type === "text")  // Update text input inputs[i].value.toLocaleUpperCase(); > > 

Disabling form controls

const inputs = document.getElementById("my-form").elements; // Iterate over the form controls for (let i = 0; i  inputs.length; i++)  // Disable all form controls inputs[i].setAttribute("disabled", ""); > 

Specifications

Browser compatibility

BCD tables only load in the browser

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Pure HTML/JS/CSS input-list component.

License

jesuschris/input-list

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README.md

Designed to be utilized within normal HTML forms with little to no additional scripting, this component provides an easy to use list interface for your users, and a POSTable, URL encoded JSON array of list values for your server! Awesome!

After preliminary testing, this should be compatible with most modern browsers. 😉

In this demo, two components have been added to a mock-up survey form. Values can be added to these components by using the ‘+’ buttons, and individually removed using the ‘-‘ buttons.

The user can view the serialized contents of the form’s POST data by clicking the ‘submit’ button.

. then place the component declaration in a form, or anywhere else on your page.

  Simple List Feel free to enter all kinds of simple stuff into this list. Wow.  

The rest of the list structure is dynamically generated using javascript.

Any values added to the list are recorded in a URL encoded JSON array on a hidden input form element. For example, if the above component were to be placed in an HTML form, the values ‘Chester’ and ‘Lauren’ added to the list, and the form were to be submitted, the following would appear in the form’s serialized POST data:

simpleList=%255B%2522Chester%2522%252C%2522Lauren%2522%255D 

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Javascript form input list

Last updated: Jan 12, 2023
Reading time · 3 min

# Table of Contents

# Get all of a Form’s elements using JavaScript

To get all the elements in a form:

1. Select the form element.
2. Use the elements property to get a collection of the form’s elements.
3. Optionally, convert the collection to an array using the Array.from() method.

Here is the HTML for the example.

Copied! 
DOCTYPE html> html lang="en"> head> title>bobbyhadz.comtitle> meta charset="UTF-8" /> head> body> form id="my-form"> input type="text" id="first_name" name="first_name" /> input type="text" id="last_name" name="last_name" /> textarea id="message" name="message" rows="5" cols="30">textarea> input type="submit" value="Submit" /> form> script src="index.js"> script> body> html> 

And here is the related JavaScript code.

Copied! 
const form = document.getElementById('my-form'); // ✅ Get all form elements const formElements = Array.from(form.elements); formElements.forEach(element =>  console.log(element); >); console.log('--------------------------'); // ✅ Get only the input elements in a form const onlyInputs = document.querySelectorAll('#my-form input'); onlyInputs.forEach(input =>  console.log(input); >); 

We selected the form element using the document.getElementById() method.

Copied! 
const form = document.getElementById('my-form'); 

The elements property on the form returns a collection containing all of the form controls.

Copied! 
const form = document.getElementById('my-form'); // ✅ Get all form elements const formElements = Array.from(form.elements); 

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HTML list Attribute

An element with pre-defined values in a :

Definition and Usage

Browser Support

The numbers in the table specify the first browser version that fully supports the attribute.

Attribute
list	20.0	10.0	4.0	Not supported	9.6

Syntax

Attribute Values

COLOR PICKER

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