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14.tree-parent.html
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14.tree-parent.html
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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
<link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.2.1/css/bootstrap.min.css"
integrity="sha384-GJzZqFGwb1QTTN6wy59ffF1BuGJpLSa9DkKMp0DgiMDm4iYMj70gZWKYbI706tWS" crossorigin="anonymous">
</head>
<body>
<div class="container">
<div class="row">
<ul class="level-1">
<li class="item-1">item-1</li>
<li class="item-2">item-2
<ul class="level-2">
<li class="item-01">item-01</li>
<li class="item-02">item-02
<ul class="level-3">
<li class="item001">item001</li>
<li class="item002">item002</li>
<li class="item003">item003</li>
</ul>
</li>
<li class="item-03">item</li>
</ul>
</li>
<li class="item-3">item-3</li>
</ul>
</div>
</div>
<script src="https://code.jquery.com/jquery-3.6.0.js"
integrity="sha256-H+K7U5CnXl1h5ywQfKtSj8PCmoN9aaq30gDh27Xc0jk=" crossorigin="anonymous"></script>
<script>
//$('.item002').parent().css('border', '1px solid red');
//往父層選取
//parents() 父層們
$('.item002').closest('.item-2').css('border', '1px solid red');
//最接近“祖先”元素
// $('.item002').closest('.item-2').next().css('border', '1px solid red');
//只能選取直系
//$('.item002').parentUntil(.level-1).css('border', '1px solid red');
//直到level-1為止，不包含level-1
</script>
</body>
</html>