Despite our warnings about the horrors of pregnancy, childbirth, and babies, some of you are still destined to become parents, if you haven't done it already. Congratulations! Now prepare to be terrified, because you have no idea what you're about to face. And we're not even talking about that first diaper change.
jQuery has two usage styles: 1  Via the $ function, which is a factory method for the jQuery object. These functions, often called commands, are chainable as they all return jQuery objects. 2  Via $.-prefixed functions. These are utility functions, which do not act upon the jQuery object directly.
JQuery Keyup() Event. This event occurs when key is released in the keyboard. Whenever a key is triggered, the keyup() method binds function to an event on an element. This method is used to perform any action or run a function as keypress event occurs in your web document.