When a radio-button is not yet chosen

1. How do you check if Radiobutton is selected or not?
2. Should radio buttons be pre selected?
3. How do I make a radio button not selected by default?
4. How to check if no radio button is selected in JavaScript?

How do you check if Radiobutton is selected or not?

There are two methods to solve this problem which are discussed below: Using Input Radio checked property: The Input Radio checked property is used to return the checked status of an Input Radio Button. Use document. getElementById('id'). checked method to check whether the element with selected id is check or not.

Should radio buttons be pre selected?

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.

How do I make a radio button not selected by default?

You can check a radio button by default by adding the checked HTML attribute to the <input> element. You can disable a radio button by adding the disabled HTML attribute to both the <label> and the <input> .

How to check if no radio button is selected in JavaScript?

The querySelector() function is a DOM method of JavaScript. It uses the common name property of radio buttons inside it. This method is used as given below to check which radio button is selected.