fadeOut (speed, callback) | speed (Number|String) Specifies the duration of the effect as a number of milliseconds or as one of the predefined strings: slow, normal, or fast. If omitted, the default is normal. callback (Function) An optional function invoked when the animation completes. No parameters are passed to this function, but the function context (this) is set to the element that was animated. | wrapped set | Causes any matched elements that aren’t hidden to be removed from the display by gradually Changing their opacity to 0% and then removing the element from the display. The duration Of the change in opacity is determined by the speed parameter. Any elements that are Already hidden aren’t affected. | |