Index Radio Deed For Free

Example 3: Groups of Radio Buttons All the buttons in a group must have the same name attribute. In the above example, we have grouped all four options in one group by keeping the name attribute same.

Note: The radio group must have share the same name (the value of the name attribute) to be treated as a group. Once the radio group is created, selecting any radio button in that group automatically deselects any other selected radio button in the same group.

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.

A radio group is defined by giving each of radio buttons in the group the same name . Once a radio group is established, selecting any radio button in that group automatically deselects any currently-selected radio button in the same group.

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.

Use the querySelector() method to check whether a radio button is selected. Programmers can use JavaScript's querySelector() method to select any HTML element. Here, we have used the querySelector() method to select only the checked radio button. If no radio button is selected, it returns a null value.

Radio buttons allow only one choice within a group of buttons. Each radio button within a group should have the same name. You can create more than one group of radio buttons by using different names.