HTML <select> form Attribute
Example
A drop-down list located outside a form (but still a part of the form):
    <form action="/action_page.php" id="carform">
  <label for="fname">Firstname:</label>
  <input type="text" id="fname" 
    name="fname">
  <input type="submit">
 </form>
 
    <label for="cars">Choose a car:</label>
<select 
    name="cars" id="cars" form="carform">
  
 <option value="volvo">Volvo</option>
  
 <option value="saab">Saab</option>
  
 <option value="opel">Opel</option>
  
 <option value="audi">Audi</option>
 </select>
Try it Yourself »
Definition and Usage
The form attribute specifies the form the drop-down list belongs to.
The value of this attribute must be equal to the id attribute of a 
<form> 
element in the same document.
Browser Support
| Attribute | |||||
|---|---|---|---|---|---|
| form | Yes | Yes | Yes | Yes | Yes | 
Syntax
  <select form="form_id">
Attribute Values
| Value | Description | 
|---|---|
| form_id | Specifies the form element the <select> element belongs to. The value of this attribute must be equal to the id attribute of a <form> element in the same document. | 
❮ HTML <select> tag
 
 
