Insert every element in the set of matched elements before the target.
Element to insert elements before.
The set of newly inserted elements.
$('<li class="plum">Plum</li>').insertBefore('.apple');$.html();//=> <ul id="fruits">// <li class="plum">Plum</li>// <li class="apple">Apple</li>// <li class="orange">Orange</li>// <li class="pear">Pear</li>// </ul> Copy
$('<li class="plum">Plum</li>').insertBefore('.apple');$.html();//=> <ul id="fruits">// <li class="plum">Plum</li>// <li class="apple">Apple</li>// <li class="orange">Orange</li>// <li class="pear">Pear</li>// </ul>
https://api.jquery.com/insertBefore/
Insert every element in the set of matched elements before the target.