jQuery Tutorial plus Question:

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When we want to fetch siblings of every elements in the set of matched elements then we can use siblings() method.
We filter the elements fetched by an optional selector.
Syntax : .siblings( [selector])
"selector" is the selector expression which specify the matched elements.

For example:
<ul>
<li> item 1 </li>
<li id="second_item"> item 2 </li>
<li class="myitem"> item 3 </li>
<li class="myitem"> item 4 </li>
</ul>

Now we want to find the siblings of the element of id "second_item" and change the text color to Blue :
$('li.second_item').siblings().css('color','blue');

If we want specific sibling elements for example the elements having class "myitem" then we can pass a optional selector:
$('li.second_item').siblings('.myitem').css('color','blue');