Input Radio Settlement For Free

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> .

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().

Radio Buttons are used to let the user select exactly one option from a list of predefined options. Radio Button input controls are created by using the ?input? element with a type attribute having the value as ?radio?.

Solution with the checked attribute If you want to assign a checked initial value to your radio button, you can use the HTML checked attribute. In the example below, we use a <form> tag and add <div> elements within it.

This is how we are able to set the default checked value of a radio button: We initialize the state variable to the value of the specific radio button. We set the checked prop on each radio button to conditionally check whether the state variable is equal to its value.

Using querySelector() var getSelectedValue = document.querySelector( 'input[name="season"]:checked'); if(getSelectedValue != null) { alert("Selected radio button values is: " + getSelectedValue.value); }

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.