jQuery .one()

The .one() method is identical to .on(), except that the handler is unbound after its first invocation. For example:

$( "#foo" ).one( "click", function() {
 alert( "This will be displayed only once." );
});

After the code is executed, a click on the element with ID foo will display the alert. Subsequent clicks will do nothing. This code is equivalent to:

$( "#foo" ).on( "click", function( event ) {
 alert( "This will be displayed only once." );
 $( this ).off( event );
});

In other words, explicitly calling .off() from within a regularly-bound handler has exactly the same effect.

If the first argument contains more than one space-separated event types, the event handler is called once for each event type.