Code Example For Input Type Radio (And What It Defines In A Form)
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Learn more - Value of
- How To Define Input Type In HTML (All The Values And Attributes)
- What does
Code Example For Input Type Radio (And What It Defines In A Form)
do? - Defines a circular selection button in a form.
Code Example
<form>
<p>Check the languages you are most proficient in.</p>
<input type="radio" name="chooseone" value="HTML"><label for="HTML"> HTML</label><br>
<input type="radio" name="chooseone" value="CSS"><label for="CSS"> CSS</label><br>
<input type="radio" name="chooseone" value="JS"><label for="JS"> JS</label><br>
<input type="radio" name="chooseone" value="PHP"><label for="PHP"> PHP</label><br>
<input type="radio" name="chooseone" value="Ruby"><label for="Ruby"> Ruby</label><br>
<input type="radio" name="chooseone" value="INTERCAL"><label for="INTERCAL"> INTERCAL</label><br>
</form>
The radio
input type displays a radio button that the user can toggle on and off. radio
differs from checkbox
in the way it is displayed.
When building a list of radio buttons, the name
attribute must be identical for each option in the list. This ensures that only one radio
input in the group can be selected.
When the form is submitted, it will include the contents of the value
attribute corresponding to the selected radio button.
Claire is seasoned technical writer, editor, and HTML enthusiast. She writes for HTML.com and runs a content agency, Red Robot Media.
Browser Support for radio
All values of type
Value name | Notes |
---|
button | Defines a button-like input. |
checkbox | Defines a checkbox, which the user can toggle on or off. |
file | Defines a file upload box with a browse button. |
hidden | Defines a field within a form that is not visible to the user. |
image | Defines an image that is clicked to submit a form. |
password | Displays an obfuscated password entry field. |
radio | Defines a circular selection button in a form. |
reset | Defines a button on a form that will return all fields to their default values. |
submit | Defines a button that is clicked to submit a form. |
text | Defines a text entry field in a form. |
All attributes of input
Attribute name | Values | Notes |
---|
step | | Specifies the interval between valid values in a number-based input. |
required | | Specifies that the input field is required; disallows form submission and alerts the user if the required field is empty. |
readonly | | Disallows the user from editing the value of the input. |
placeholder | | Specifies placeholder text in a text-based input. |
pattern | | Specifies a regular expression against which to validate the value of the input. |
multiple | | Allows the user to enter multiple values into a file upload or email input. |
min | | Specifies a minimum value for number and date input fields. |
max | | Specifies a maximum value for number and date input fields. |
list | | Specifies the id of a <datalist> element which provides a list of autocomplete suggestions for the input field. |
height | | Specifies the height of an image input. |
formtarget | | Specifies the browsing context in which to open the response from the server after form submission. For use only on input types of "submit" or "image". |
formmethod | | Specifies the HTTP method (GET or POST) to be used when the form data is submitted to the server. Only for use on input types of "submit" or "image". |
formenctype | | Specifies how form data should be submitted to the server. Only for use on input types "submit" and "image". |
formaction | | Specifies the URL for form submission. Can only be used for type="submit" and type="image". |
form | | Specifies a form to which the input field belongs. |
autofocus | | Specifies that the input field should be in focus immediately upon page load. |
maxlength | | Specifies the maximum number of characters that can be entered in a text-type input. |
src | | Defines the source URL for an image input. |
type | button checkbox file hidden image password radio reset submit text
| Defines the input type. |
value | | Defines an initial value or default selection for an input field. |
size | | Specifies the width of the input in characters. |
name | | Specifies the name of an input element. The name and value of each input element are included in the HTTP request when the form is submitted. |
language | | Was used to indicate the scripting language used for events triggered by the input. |
accesskey | | Defines a keyboard shortcut for the element. |
disabled | | Disables the input field. |
checked | | Specifies whether a checkbox or radio button form input should be checked by default. |
border | | Was used to specify a border on an input. Deprecated. Use CSS instead. |
autocomplete | | Specifies whether the browser should attempt to automatically complete the input based on user inputs to similar fields. |