A simple, nestable accordion with some examples of nesting levels and a media query.
A simple accordion that allows for a nested structure. The style comes with some examples of how to style three levels and how to add a media query for decreasing the size on smaller screens. Clicking a trigger element will open the content.
The HTML
<ul id="cbp-ntaccordion" class="cbp-ntaccordion"> <li> <h3 class="cbp-nttrigger">Oat cake tootsie roll</h3> <div class="cbp-ntcontent"> <p><!-- ... --></p> <ul class="cbp-ntsubaccordion"> <li> <h4 class="cbp-nttrigger">Donut pastry</h4> <div class="cbp-ntcontent"><!-- ... --></div> </li> <li> <h4 class="cbp-nttrigger">Carrot cake</h4> <div class="cbp-ntcontent"> <!-- ... --> <ul class="cbp-ntsubaccordion"> <li> <h5 class="cbp-nttrigger">Donut pastry</h5> <div class="cbp-ntcontent"><!-- ... --></div> </li> <li><!-- ... --></li> <li><!-- ... --></li> </ul> </div> </li> <li> <h4 class="cbp-nttrigger">Tootsie roll marshmallow</h4> <div class="cbp-ntcontent"> <!-- ... --> </div> </li> </ul> </div> </li> <li><!-- ... --></li> <li><!-- ... --></li> <li><!-- ... --></li> </ul>
The CSS
/* Icon font for arrow icons */
@font-face {
font-family: 'icomoon';
src:url('../fonts/icomoon_arrows/icomoon.eot');
src:url('../fonts/icomoon_arrows/icomoon.eot?#iefix') format('embedded-opentype'),
url('../fonts/icomoon_arrows/icomoon.woff') format('woff'),
url('../fonts/icomoon_arrows/icomoon.ttf') format('truetype'),
url('../fonts/icomoon_arrows/icomoon.svg#icomoon') format('svg');
font-weight: normal;
font-style: normal;
} /* Iconfont by Icomoon http://icomoon.io/ */
/* Accordion style */
.cbp-ntaccordion {
list-style: none;
margin: 0;
padding: 0;
}
.cbp-ntsubaccordion {
list-style: none;
}
.cbp-ntaccordion .cbp-nttrigger {
cursor: pointer;
}
.cbp-ntaccordion h3 {
margin: 0 0 0.3em;
padding: 1em 0 0.5em;
border-bottom: 1px solid #ddd;
font-size: 2.75em;
font-weight: 300;
}
.cbp-ntaccordion h4 {
font-size: 1.2em;
text-transform: uppercase;
letter-spacing: 0.4em;
padding: 0.5em 0 0.5em;
margin: 0 0 0.5em;
}
.cbp-ntaccordion h5 {
font-size: 1.2em;
color: #aaa;
padding: 0.5em 0 0.5em;
margin: 0 0 0.5em;
}
.cbp-ntaccordion .cbp-ntcontent p {
color: #888;
font-size: 1.25em;
font-weight: 300;
line-height: 1.5;
padding: 0.2em 0 1.5em;
margin: 0;
}
/* Arrow icons */
.cbp-ntaccordion > li > .cbp-nttrigger:before,
.cbp-ntsubaccordion > li > .cbp-nttrigger:before {
font-family: 'icomoon';
speak: none;
font-weight: normal;
font-variant: normal;
text-transform: none;
line-height: 1;
color: #ddd;
margin-right: 0.5em;
-webkit-font-smoothing: antialiased;
}
.cbp-ntaccordion > li > .cbp-nttrigger:before {
font-size: 75%;
}
.cbp-ntaccordion > li > .cbp-nttrigger:before {
content: "\36";
}
.cbp-ntaccordion > li > .cbp-nttrigger:hover:before {
content: "\35";
color: inherit;
}
.cbp-ntaccordion > li.cbp-ntopen > .cbp-nttrigger:before,
.no-js .cbp-ntaccordion > li > .cbp-nttrigger:before {
content: "\34";
color: inherit;
}
.cbp-ntsubaccordion > li > .cbp-nttrigger:before {
content: "\32";
}
.cbp-ntsubaccordion > li > .cbp-nttrigger:hover:before {
content: "\33";
color: inherit;
}
.cbp-ntsubaccordion > li.cbp-ntopen > .cbp-nttrigger:before,
.no-js .cbp-ntsubaccordion > li > .cbp-nttrigger:before {
content: "\31";
color: inherit;
}
/* Initial height is zero */
.cbp-ntaccordion .cbp-ntcontent {
height: 0;
overflow: hidden;
}
/* When open, set height to auto */
.cbp-ntaccordion .cbp-ntopen > .cbp-ntcontent,
.cbp-ntsubaccordion .cbp-ntopen > .cbp-ntcontent,
.no-js .cbp-ntaccordion .cbp-ntcontent {
height: auto;
}
/* Example for media query */
@media screen and (max-width: 32em) {
.cbp-ntaccordion {
font-size: 70%;
}
}
The JavaScript
/**
* jquery.cbpNTAccordion.js v1.0.0
* http://www.codrops.com
*
* Licensed under the MIT license.
* http://www.opensource.org/licenses/mit-license.php
*
* Copyright 2013, Codrops
* http://www.codrops.com
*/
;( function( $, window, undefined ) {
'use strict';
// global
var $body = $( 'html, body' );
$.CBPNTAccordion = function( options, element ) {
this.$el = $( element );
this._init( options );
};
// the options
$.CBPNTAccordion.defaults = {};
$.CBPNTAccordion.prototype = {
_init : function( options ) {
// options
this.options = $.extend( true, {}, $.CBPNTAccordion.defaults, options );
// cache some elements and initialize some variables
this._config();
// initialize/bind the events
this._initEvents();
},
_config : function() {
// the clickable items
this.$items = this.$el.find( '.cbp-nttrigger' );
},
_initEvents : function() {
this.$items.on( 'click.cbpNTAccordion', function() {
var $listItem = $( this ).parent();
if( $listItem.hasClass( 'cbp-ntopen' ) ) {
$listItem.removeClass( 'cbp-ntopen' );
}
else {
$listItem.addClass( 'cbp-ntopen' );
$body.scrollTop( $listItem.offset().top );
}
} );
},
destroy : function() {
this.$items.off( '.cbpNTAccordion' ).parent().removeClass( 'cbp-ntopen' );
}
};
var logError = function( message ) {
if ( window.console ) {
window.console.error( message );
}
};
$.fn.cbpNTAccordion = function( options ) {
if ( typeof options === 'string' ) {
var args = Array.prototype.slice.call( arguments, 1 );
this.each(function() {
var instance = $.data( this, 'cbpNTAccordion' );
if ( !instance ) {
logError( "cannot call methods on cbpNTAccordion prior to initialization; " +
"attempted to call method '" + options + "'" );
return;
}
if ( !$.isFunction( instance[options] ) || options.charAt(0) === "_" ) {
logError( "no such method '" + options + "' for cbpNTAccordion instance" );
return;
}
instance[ options ].apply( instance, args );
});
}
else {
this.each(function() {
var instance = $.data( this, 'cbpNTAccordion' );
if ( instance ) {
instance._init();
}
else {
instance = $.data( this, 'cbpNTAccordion', new $.CBPNTAccordion( options, this ) );
}
});
}
return this;
};
} )( jQuery, window );
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