Примеры для jQuery .parents()

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Find all parent elements of each b.

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<!doctype html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <title>parents demo</title>
  <style>
  b, span, p, html body {
    padding: .5em;
    border: 1px solid;
  }
  b {
    color: blue;
  }
  strong {
    color: red;
  }
  </style>
  <script src="https://code.jquery.com/jquery-1.10.2.js"></script>
</head>
<body>
 
<div>
  <p>
    <span>
      <b>My parents are: </b>
    </span>
  </p>
</div>
 
<script>
var parentEls = $( "b" ).parents()
  .map(function() {
    return this.tagName;
  })
  .get()
  .join( ", " );
$( "b" ).append( "<strong>" + parentEls + "</strong>" );
</script>
 
</body>
</html>

Демонстрация:

Click to find all unique div parent elements of each span.

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<!doctype html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <title>parents demo</title>
  <style>
  p, div, span {
    margin: 2px;
    padding: 1px;
  }
  div {
    border: 2px white solid;
  }
  span {
    cursor: pointer;
    font-size: 12px;
  }
  .selected {
    color: blue;
  }
  b {
    color: red;
    display: block;
    font-size: 14px;
  }
  </style>
  <script src="https://code.jquery.com/jquery-1.10.2.js"></script>
</head>
<body>
 
<p>
  <div>
    <div><span>Hello</span></div>
      <span>Hello Again</span>
    </div>
    <div>
      <span>And Hello Again</span>
    </div>
  </p>
  <b>Click Hellos to toggle their parents.</b>
 
<script>
function showParents() {
  $( "div" ).css( "border-color", "white" );
  var len = $( "span.selected" )
    .parents( "div" )
      .css( "border", "2px red solid" )
      .length;
  $( "b" ).text( "Unique div parents: " + len );
}
$( "span" ).click(function() {
  $( this ).toggleClass( "selected" );
  showParents();
});
</script>
 
</body>
</html>

Демонстрация: