Radio or period Button in HTML Form Fields -

Gender: Male Female Others

HTML form radio buttons

Radio buttons are mainly used when the user has to select only one among a group of options. Radio button has two states and can toggle between them.

Note:

Several radio buttons can be grouped together so that only one radio button can be selected at any given time. We can group radio buttons by giving same name for all the radiobuttons.

A single radio button can be created as :

<input type="radio" name="groupname" value="value1" checked>

HTML form radio buttons input types to collect user selected options with attributes

Attributes of Radio Button Field:

Attribute	Description
Name	Specifies the group name of the radio button. One group of radio button will have same name through which it can be referenced.
value	Value of the radio button. Each radio button will have different values in a group.
Checked	Radio button will be selected. In a group of buttons one can be selected.
Align	Specifies the alignment of the radio buttons.

Example of Radio button:

Gender: <input type="radio" name="grpGender" value="Male" Checked>Male
 <input type="radio" name="grpGender" value="Female">Female

The above code places two radio buttons with a group name of "grpgender", one with a value "Male" and other one with value "Female". As the checked property is given for the first radio button it will be selected by default. This will give the output like :

Gender: Male Female

Radio button or Checkbox

In a web form if we can select one of the several options then we will go for Radio buttons. If the user can select more than one options then we will go for checkbox.

Example :

How many languages you know ? ( Use checkbox here as user can slect more than one choice )
Your gender ( Use radio button here as user can select one choice )

Checkbox in a form

HTML Form Drop down Listbox Checkbox in a form

Radio Button in HTML form

Note:

Attributes of Radio Button Field:

Example of Radio button:

Radio button or Checkbox

Example :

Subscribe