When thereâs not enough of these hormones, your body has trouble with these basic functions. That causes the symptoms of adrenal insufficiency -- fatigue, muscle weakness, low appetite, weight loss, and belly pain, among others. You can have either primary or secondary adrenal insufficiency.
In the DOM event model, there is a clear distinction between an event listener and a listener function: an event listener is an instance of a class that implements the EventListener interface, whereas a listener function is a method of that class named handleEvent().
For example, you can place an event listener on the Stage to listen for and respond to keyboard input. In the following code, an event listener captures a key press, and the key name and key code properties are displayed:Some keys, such as the Ctrl key, generate events even though they have no glyph representation.or example, you can place an event listener on the Stage to listen for and respond to keyboard input. In the following code, an event listener captures a key press, and the key name and key code properties are displayed: