Model Radio Form For Free

The required attribute is a boolean attribute. When present, it specifies that an input field must be filled out before submitting the form. Note: The required attribute works with the following input types: text, search, url, tel, email, password, date pickers, number, checkbox, radio, and file.

It is generally used in HTML form. If we want to deselect any option we have to select another option in the case of a radio button. Approach: To add a radio buttons in a webpage, the HTML provides a <input> element with type attribute is set to ?radio?.

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.

HTML <input type=?radio?> 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?. Syntax: <input type="radio">

Radio buttons are a common way to allow users to make a single selection from a list of options. Since only one radio button can be selected at a time (within the same group), each available choice must be its own item and label.

To make it required that a selection must be made, just click the required option under Radio Button field settings. Doesn't matter whether you do this on just one of the radio buttons in the group, or all of them, you'll get the same behavior of ?one must be selected for this field to be valid?.

Use the ?checked? property of the radio button element for validating a radio button using JavaScript. It gives a boolean value ?true? if the radio button is selected/checked, if it gives ?false?, it means the radio button is ?not-checked?.

To validate radio buttons in Angular we need to import the Validators service from @angular/forms. Then inject the Validators service in radio button's form control array and access the validation method like given below. Go to app. component.