A few examples on val, blur, focus, change and submit.
jQuery and Forms
Gets the input of the ﬁrst matched element
Bind a function to the focus event of each matched
element. The focus event is ﬁred when an element
receives focus from the mouse or by pressing tab.
Bind a function to the blur event of each matched
element. The blur event ﬁres when an element loses
focus either via the mouse or by pressing tab.
Binds a function to the change event of each matched element.
The change event ﬁres when a control loses the input focus
and its value has been modiﬁed since gaining focus.
Bind an event to the submit
event of each matched element.