Load Radio Title For Free

Always Offer a Default Selection One of the 10 heuristics of UI design says that users should be able to undo (and redo) their actions. This means enabling people to set a UI control back to its original state. In case of radio buttons this means that radio buttons should always have exactly one option pre-selected.

This process can be automated by looping through an array that contains all the possible values and creating a new radio button element for each item in the array. To dynamically create radio button using an array, use the concept of createElement() and appendChild().

In case we need to select a radio button by default, we need to check it as true. Whenever the radio buttons are checked as true, then it will be autofocused by default.

By default, the android RadioButton will be in OFF (Unchecked) state. We can change the default state of RadioButton by using android:checked attribute. In case, if we want to change the state of RadioButton to ON (Checked), then we need to set android:checked = ?true? in our XML layout file.

The DOM Input Radio name Property in HTML DOM is used to set or return the value of name attribute of a Radio Button. The name attribute is required for each input field. If the name attribute is not specified in an input field then the data of that field would not be sent at all.

In case we need to select a radio button by default, we need to check it as true. Whenever the radio buttons are checked as true, then it will be autofocused by default.

Input Radio value Property Get the value of the value attribute of a radio button: var x = document.getElementById("myRadio").value; Change the value of the value attribute of a radio button: ... Using radio buttons together with a text input field to display the value of the selected radio button: