javascript - How to add plus minus symbol to a basic accordion using jquery? -


i'm using basic jquery accordion written luca filosofi this thread. here version:

$('.product-details .post-body dl dt').on('click', function (e) {     e.preventdefault();     $(this).parent('dl').children('dd:visible').slideup('fast');     $(this).nextuntil('dt').filter(':not(:visible)').slidedown('fast'); });

the script works perfectly. however, don't know how have plus , minus text (+, -) attached before title (e.g: + title) based if content shown or not.

i have following permanent markup , must stay is. must not add more class or html, except via jquery:

<dl>     <dt>title</dt>     <dd>description 01</dd>     <dd>description 02</dd>      <dt>title</dt>     <dd>description 01</dd>     <dd>description 02</dd>     <dd>description 03</dd> </dl>

you toggle icons when click this:

$('.product-details .post-body dl dt').on('click', function (e) {     e.preventdefault();     $(this).parent('dl').children('dd:visible').slideup('fast');     $(this).nextuntil('dt').filter(':not(:visible)').slidedown('fast');     $(this).closest('i').toggleclass("icon-circle-plus icon-circle-minus"); });

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