firstChild(): One for each parent. : Selector first last « jQuery « JavaScript Tutorial






  1. JavaScript Tutorial
  2. jQuery
  3. Selector first last
<html>
  <head>
    <script type="text/javascript" src="js/jquery-1.3.2.js"></script>
    <script type="text/javascript">
        $(document).ready(function(){
                $("div span:first-child")
                .css("text-decoration", "underline")
                .hover(function () {
                      $(this).addClass("red");
                    }, function () {
                      $(this).removeClass("red");
                    });

        });
    </script>
    <style>
    
      span { color:#008; }
      span.red { color:red; font-weight: bolder; }
      
    </style>
  </head>
  <body>
    <body>
      <div>
          <span>A,</span>
          <span>B,</span>
          <span>C</span>
      </div>
      <div>
          <span>D,</span>
          <span>E,</span>
          <span>F</span>
      </div>
    </body>
</html>








30.6.Selector first last
30.6.1.Get first paragraph
30.6.2.Select first span
30.6.3.Get first child ID
30.6.4.lastChild() : One for each parent.
30.6.5.firstChild(): One for each parent.
30.6.6.Get last paragraph
30.6.7.Matches the first selected element
30.6.8.last() matches the last selected element.
30.6.9.first() matches only a single element
30.6.10.Matches the last selected element