jQuery Expand Collapse All

by Vincy. Last modified on July 12th, 2022.

The expand collapse functions are used for expanding or collapsing menu structured or tree structured list of items. There are various plug-ins, UI effects in jQuery to provide expand collapse option.

In this tutorial, we are using jQuery show and hide functions to expand/collapse list of menu items.

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HTML Menu to be Expanded/Collapsed

Let us take the list of menu items we have used in a jQuery tutorial for showing the drop-down menu.

The code is,

<div onclick="expandCollapse()" id="expand-collapse" align="right">Expand
	All</div>
<div id="popular" class="mainmenu">
	<a href="#">Popular Toys</a>
	<div class="submenu">
		<ul>
			<li><a href="#">Video Games</a>
			
			<li><a href="#">Barbies</a>
			
			<li><a href="#">Teddy Bear</a>
			
			<li><a href="#">Golf Set</a></li>
		</ul>
	</div>
</div>
<div id="recent" class="mainmenu">
	<a href="#">Recent Toys</a>
	<div class="submenu">
		<ul>
			<li><a href="#">Yoyo</a>
			
			<li><a href="#">Doctor Kit</a>
			
			<li><a href="#">Puzzles</a>
			
			<li><a href="#">Uno Cards</a></li>
		</ul>
	</div>
</div>
<div id="category" class="mainmenu">
	<a href="#">Toys Category</a>
	<div class="submenu">
		<ul>
			<li><a href="#">Battery Toys</a>
			
			<li><a href="#">Remote Toys</a>
			
			<li><a href="#">Magnet Toys</a>
			
			<li><a href="#">Soft Toys</a></li>
		</ul>
	</div>
</div>

jQuery Expand Collapse Handler

We have to Expand All link in the above HTML code. On clicking this link it will call the jQuery expand-collapse function. This function will collapse menu items if it is already in expanded mode and vise verse. The script is,

function expandCollapse() {
	if($(".submenu").css('display') == 'none') {
		$("#expand-collapse").html("Collapse All");
		$(".submenu").show("slow");
	} else {
		$("#expand-collapse").html("Expand All");
		$(".submenu").hide("slow");
	}
}

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