# :header Selector

Categories: Selectors > Basic Filter | Selectors > jQuery Extensions

## header selector

#### version added: 1.2jQuery(':header')

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

### 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.

    <!DOCTYPE html>
    <html>
    <head>
      <style>
      body { font-size: 10px; font-family: Arial; }
      h1, h2 { margin: 3px 0; }
      </style>
      <script src="http://code.jquery.com/jquery-1.7rc2.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: