OpenJS Foundation - openjsf.org · api.jquery.com

header selector

Description: Selects all elements that are headers, like h1, h2, h3 and so on.

version added: 1.2jQuery( ":header" )

Additional Notes:

Because :header is a jQuery extension and not part of the CSS specification, queries using :header cannot take advantage of the performance boost provided by the native DOM querySelectorAll() method. To achieve the best performance when using :header to select elements, first select the elements using a pure CSS selector, then use .filter(":header").

Example:

Adds a background and text color to all the headers on the page.

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<!doctype html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <title>header demo</title>
  <script src="https://code.jquery.com/jquery-4.0.0.js"></script>
</head>
<body>
<h1>Header 1</h1>
<p>Contents 1</p>
<h2>Header 2</h2>
<p>Contents 2</p>
<script>
$( ":header" ).css({ background: "#ccc", color: "blue" });
</script>
</body>
</html>

Demo:

Read the original on api.jquery.com ↗