jQuery slideDown()

Introduction

Slide-down and show all hidden <p> elements:

<!DOCTYPE html>
<html>
<head>
<script 
 src="https://ajax.googleapis.com/ajax/libs/jquery/3.4.1/jquery.min.js">
</script>/*from   www .  j  av  a 2s .co m*/
<script>
$(document).ready(function(){
  $(".btn1").click(function(){
    $("p").slideUp();
  });
  $(".btn2").click(function(){
    $("p").slideDown();
  });
});
</script>
</head>
<body>

<p>This is a paragraph.</p>

<button class="btn1">Slide up</button>
<button class="btn2">Slide down</button>

</body>
</html>

The slideDown() method slides-down and shows the selected elements.

slideDown() works on elements hidden with jQuery methods and display:none in CSS but not visibility:hidden.

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

Parameter	Optional	Description
speed	Optional.	speed of the slide effect. Default value is 400 milliseconds Possible values: milliseconds "slow" "fast"
easing	Optional.	speed of the element in different points of the animation. Default value is "swing" Possible values: "swing" - moves slower at the beginning/end, faster in the middle "linear" - moves in a constant speed
callback	Optional.	A function to be executed after the `slideDown()` method is completed

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