jQuery slideDown() Method
The jQuery slideDown() method is used to slide down an element.Syntax:
$(selector).slideDown(speed,callback);
The optional speed parameter specifies the duration of the effect. It can take the following values: "slow", "fast", or
milliseconds.The optional callback parameter is a function to be executed after the sliding completes.
The following example demonstrates the slideDown() method:
Example
$("#flip").click(function(){
$("#panel").slideDown();
});