jQuery prev()

Introduction

The prev() method returns the previous sibling element of the selected element.

Sibling elements are elements that share the same parent.

$(selector).prev(filter)

Parameter	Optional	Description
filter	Optional.	a selector expression to narrow down the previous sibling search

Return the previous sibling element of each <li> element with class name "start":

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<!DOCTYPE html>
<html>
<head>
<style>
.siblings * {/*w w w.ja  v  a2s.c  o  m*/
  display: block;
  border: 2px solid lightgrey;
  color: lightgrey;
  padding: 5px;
  margin: 15px;
}
</style>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.4.1/jquery.min.js"></script>
<script>
$(document).ready(function(){
  $("li.start").prev().css({"color": "red", "border": "2px solid red"});
});
</script>
</head>
<body>

<div style="width:500px;" class="siblings">
  <ul>ul (parent)
    <li>li</li>
    <li>li</li>
    <li class="start">li</li>
    <li>li</li>
    <li>li</li>
  </ul>
</div>

</body>
</html>

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