Lightweight jQuery Accordion Plugin with Minimal Markup - Accordion.js

Accordion.js is a simple, lightweight jQuery plugin that turns a set of nested elements into an accordion by passing in the id of a wrapper element.

How to use it:

1. Add references to jQuery JavaScript library and the jQuery accordion.js plugin.

<script src="//code.jquery.com/jquery-1.11.3.min.js"></script>
<script src="accordion.js"></script>

2. The html document must be structured in the following way, using unique HTML tags for each section, header and content:

• Container element
• Sub-container element for each item in the according - recommended tag: section 
• Header element for each title in the accordion - recommended tag: h1
• Content element for each item in the accordion - recommended tag: p
• Close Sub-container
• Repeat sub-containers as often as required
• Close Container

<div id="accordion">
  <section>
    <h1>Accordion Title 1</h1>
    <p>Accordion content here</p>
  </section>


  <section>
    <h1>Accordion Title 1</h1>
    <p>Accordion content here</p>
  </section>

  <section>
    <h1>Accordion Title 3</h1>
    <p>Accordion content here</p>
  </section>
  
</div>

3. That's it. Customize the accordion with your own CSS styles.

#accordion {
  clear: both;
  float: left;
}

#accordion section {
  text-align: left;
  width: 450px;
}

#accordion section h1 {
  font-size: 16px;
  cursor: pointer;
  border: 1px #C0392B solid;
  border-radius: 5px;
  background-color: #E74C3C;
  padding: 10px;
  color: #fff;
}

#accordion section p {
  display: none;
  padding-left: 10px;
}

.fulljustify { text-align: justify; }

.fulljustify:after {
  content: "";
  display: inline-block;
  width: 100%;
}

section h1 span {
  float: right;
  display: block;
  position: relative;
}

section h1 span img {
  margin-top: 2px;
  margin-right: 10px;
}

section h1 span img.open {
  float: right;
  position: absolute;
  clip: rect(0px,15px,7px,0px);
  right: 0px;
  margin-top: 9px;
}

section h1 span img.closed {
  float: right;
  position: absolute;
  clip: rect(8px,15px,15px,0px);
  right: 0px;
  margin-top: 2px;
}

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This awesome jQuery plugin is developed by matt-platts. For more Advanced Usages, please check the demo page or visit the official website.