jQuery slideDown() method is used to slide down an element.


$(selector).slideDown(speed, callback); 
$(selector).slideDown(speed, easing, callback);

speed: It specifies the speed of the delay. Its possible vales are slow, fast and milliseconds.

easing: It specifies the easing function to be used for transition.

callback: It is also an optional parameter. It specifies the function to be called after completion of slideDown() effect.

Let's take an example to demonstrate jQuery slideDown() effect.

<!DOCTYPE html>
<script src=""></script>
#panel, #flip {
    padding: 5px;
    text-align: center;
    background-color: #00FFFF;
    border: solid 1px #c3c3c3;
#panel {
    padding: 50px;
    display: none;
<div id="flip">Click to slide down panel</div>
<div id="panel">Hello! 
It is the best tutorial website to learn jQuery and other languages.</div>


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