:header Selector
Selects all elements that are headers, like h1, h2, h3 and so on.
Selects all elements that are headers, like h1, h2, h3 and so on.
Selects all input, textarea, select and button elements.
Selects all elements that are selected.
Selects all elements that are hidden.
Create a serialized representation of an array, a plain object, or a jQuery object suitable for use in a URL query string or Ajax request. In case a jQuery object is passed, it should contain input elements with name/value properties.