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To label a radio button, add a <label> element after the <input> element and insert a for attribute with the same value as the id of the associated <input> element. Then, write your label text in the <label> tag. While using <label> isn't strictly necessary, it's considered a best practice for two reasons.

Radio buttons, also called option buttons, let users select one option from a collection of two or more mutually exclusive, but related, options. Radio buttons are always used in groups, and each option is represented by one radio button in the group.

Defining Radio Group in HTML We can define a group for radio buttons by giving each radio button the same name. As and when the user selects a particular option from this group, other options are deselected. Following is an example of radio buttons with different names within a form.

To add multiple radio button groups in one form, first, create a form in HTML with a “<form>” tag. Then, insert the “<input>” element and add various attributes, including “type” as “radio”, “id”, “name”, and “value”. Lastly, create a “Submit” button through input type “submit”.

You group radio buttons by drawing them inside a container such as a Panel control, a GroupBox control, or a form. All radio buttons that are added directly to a form become one group. To add separate groups, you must place them inside panels or group boxes.

To get the value of the selected radio button, a user-defined function can be created that gets all the radio buttons with the name attribute and finds the radio button selected using the checked property. The checked property returns True if the radio button is selected and False otherwise.

When using HTML's native input radio button, <input type="radio"> , the radio buttons are grouped when each of input radio buttons in the group is given the same name .