jquery - Add and remove class in navigation -

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i building navigation list open , close. work hidden list open , close, can not change fa class fa-plus fa-minus when child list opened.

<nav>    <ul>     <li class="test"><a href="#">menu 1 <i class="fa fa-plus"></i></a>        <ul>          <li><a href="#11">sub menu 1</a></li>          <li><a href="#12">sub menu 2</a></li>             <li><a href="#13">sub menu 3</a></li>                               </ul>     </li>     <li class="test"><a href="#">menu 2 <i class="fa fa-plus"></i></a>        <ul>          <li><a href="#21">sub menu 1</a></li>          <li><a href="#22">sub menu 2</a></li>                               </ul>     </li>    </ul> </nav>

and jquery code:

jquery(document).ready(function () {     jquery('.test').on('click', function(){         jquery('nav ul ul').hide();         jquery('nav ul li i').addclass('fa-plus');         jquery(this).children('nav ul ul').slidedown();         jquery(this).children('nav ul li i').removeclass('fa-plus').addclass('fa-minus');         return false;       }); });

try this,

jquery(document).ready(function () {     jquery('.test').on('click', function(){         // hide ul's         jquery('nav ul ul').hide();         // add class plus , removing minus         jquery('nav ul li i').addclass('fa-plus').removeclass('fa-minus');         // toggle current li -> ul         jquery(this).children('ul').slidedown();         // toggle class current li ->         jquery(this).find('a > i').removeclass('fa-plus').addclass('fa-minus');         return false;       }); });

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