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jQuery slideDown() Method

It a predefined method of jQuery. It is used to slide down an HTML element.

Syntax:

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

Syntax:

$(selector).mouseover(function)

The speed parameter is optional and used to 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.

Please see the below example to get better knowledge about slideDown().

Example:

	<!DOCTYPE html>  
	<html lang="en">  
	<head>  
	  <meta charset="utf-8">  
	  <title>slide down</title>  
	<style> 
	#panel{
	  height: 150px;
	  width: 150px;
	  background-color: blue;
	  border-radius: 50%;
	  display: inline-block;
	}

	#panel {
	  padding: 50px;
	  display: none;
	}
	</style>
	 <script src="https://ajax.googleapis.com/ajax/libs/jquery/3.4.1/jquery.min.js"></script>
	</head>
	<body>
	<div id="panel"></div>
	<br>
	<button id="flip">Click to slide down</button>

	<script> 
	$(document).ready(function(){
	  $("#flip").click(function(){
		$("#panel").slideDown("slow");
	  });
	});
	</script>
	</body>
	</html>

jQuery slideUp() Method

It a predefined method of jQuery. It is used to slide up an HTML element.

Syntax:

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

The speed parameter is optional and used to 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.

Please see the below example to get better knowledge about slideUp().

Example:

	<!DOCTYPE html>  
	<html lang="en">  
	<head>  
	  <meta charset="utf-8">  
	  <title>slide up</title>  
	<style> 
	#panel{
	  height: 150px;
	  width: 150px;
	  background-color: blue;
	  border-radius: 50%;
	  display: inline-block;
	}

	#panel {
	  padding: 50px;
	}
	</style>
	 <script src="https://ajax.googleapis.com/ajax/libs/jquery/3.4.1/jquery.min.js"></script>
	</head>
	<body>
	<div id="panel"></div>
	<br>
	<button id="flip">Click to slide up</button>

	<script> 
	$(document).ready(function(){
	  $("#flip").click(function(){
		$("#panel").slideUp("slow");
	  });
	});
	</script>
	</body>
	</html>