Validating event radio group
Deprecation note: The $w parameter of event handlers is being deprecated.Now, to get a scoped selector for working with repeater items, use the $w.at() function and pass it the context property of the event parameter: An element leaves the viewport when the page is scrolled so that the elements is completely out of view.Use rules and messages to specify which elements to validate, and how.
focus Invalid focuses elements when submitting an invalid form.
When collapsed, elements positioned within 70 pixels below the collapsed element and each other move up to take the collapsed element's place where possible.
The elements that move up maintain their positions relative to one another.
Getting or setting a radio button group's styles, gets or sets the styles of the radio button group's regular state.
It does not set the styles of the radio button group's hover, focus, error, or disabled states.