Validating event radio group
Use error Class, error Element, wrapper, error Label Container, error Container, show Errors, success, error Placement, highlight, unhighlight, and ignore Title to control how invalid elements and error messages are displayed.Radio button groups are used for selecting one of a number of options. Each option contains a label, which is what the user sees, and a value, which is what is used in code and stored in you collections.Use the debug option to ease setting up validation rules, it always prevents the default submit, even when script errors occur.Use submit Handler to implement your own form submit, eg. Use invalid Handler to react when an invalid form is submitted.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.
Setting it to false allows the element to be valid even if it doesn't contain a value.in code does not set the value of the connected field in the dataset.That means if you use the dataset to perform a submit, the value changed in code is not reflected in the submitted item.The element's validity is checked when the value of the element changes either by user interaction or programmatically.Note that validations other than required, including custom validations, are not run on input elements when they don't have a value.