jQuery - Selectors: Understanding The $() Factory Function



jQuery Selector Step By Step Tutorial - Part 1: Before read this series about jQuery selector, please read jQuery introduction. Now, we talk important function at jQuery, $() Factory function.

How to use $() factory function, look at following examples:

  • A tag name: $('p') gets all paragraphs in the document.
  • An ID: $('#song-id') gets the single element in the document that has the corresponding song-id ID.
  • A class: $('.lyric-class') gets all elements in the document that have a class of lyric-class.

For practice in this series, create a file named "selectors.html". Enter following code:

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>Beatles Song</title>
</head>
<h1>My Favorite Beatles Song</h1>
<div id="description">These is all of my favorite song from The Beatles. How about you?</div>

<ul id="favorite">
  <li>Love
    <ul>
      <li><a href="love.html">Love me do</a>
      <li>Something
      <li>Here, There, and Anywhere
    </ul>
  <li>Balads
    <ul>
      <li><a href="obladi.pdf">Obladi Oblada</a>
      <li>Get Back
      <li>Help
    </ul>
  <li>Rock 'n Roll
    <ul>
      <li><a href="mailto:music.rock">Rock 'n Roll The Music</a>
        <ul>
          <li>Part 1
          <li>Part 2
        </ul>
      <li>Hard Days Night
      <li>Standing There
    </ul>
</ul>

<body>
</body>
</html>



Series this article:
jQuery - Selectors: Understanding The $() Factory Function
jQuery - Selector: Modifying Style at List Item Levels
jQuery - Selector: Styling Sub Level Item
jQuery - Selector: XPath Selectors
jQuery - Selector: Custom Selectors
jQuery - Selector: Choose a Style at Custom Selectors
jQuery - Selector: Modify Style for Table Header
jQuery - Selector: Styling Sibling
jQuery - Selector: Styling Next Cell


Tag: jQuery, $(), factory, function, selectors Category: JavaScript Post : March 21st 2008 Read: 2,569 Bookmark and Share

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