Solved

HTML definition List (DL) onclick event problem

Posted on 2009-04-08
4
955 Views
Last Modified: 2012-06-22
I am learning HTML and Javascript. I encountered an issue when I ran the attached code. If I select the bottom drop down list item, the debug message for the definition list (dl) event handler (markLoadPage) is popped up instead of the one (setColor) for the drop down list. This issue won't show if I move the drop down list to the top of the definition list. Is there anything wrong for the dl onclick event syntax? Thanks!
<html>
  <head>
    <title>Test</title>
    <script language="javascript"> <!--
 
      function markLoadPage( page_url )
      {
	    alert( 'markLoadPage() called!' );
      }
      
      function setColor()
     {
	  alert( 'setColor() called!' );
	  	  
	    var idx = document.getElementById( "color_list" ).selectedIndex;
	    if( idx > 0 )
	    {
	      document.bgColor = document.getElementById( "color_list" ).options[ idx ].value;
          }
      } 
//--></script>
  </head>
  <body>
   <form action="">
     <h2>Categories</h2>
     <dl><a href="red_rose.html" target="P3" onclick="markLoadPage( 'red_rose.html' )">Red rose</dl>
     <dl><a href="pink_rose.html" target="P3" onclick="markLoadPage( 'pink_rose.html' )">Pink rose</dl>
     <dl><a href="yellow_rose.html" target="P3" onclick="markLoadPage( 'yellow_rose.html' )">Yellow rose</dl>
     <dl><a href="white_rose.html" target="P3" onclick="markLoadPage( 'white_rose.html' )">White rose</dl>
     <dl><a href="orange_rose.html" target="P3" onclick="markLoadPage( 'orange_rose.html' )">Orange rose</dl>
     <dl><a href="lavender_rose.html" target="P3" onclick="markLoadPage( 'lavender_rose.html' )">Lavender rose</dl>
     <p/><p/>
     <select name="color_list" id="color_list" onchange="setColor()">
       <option value="prompt">Choose a colour</option>
       <option value="red">red</option>
       <option value="pink">pink</option>
       <option value="yellow">yellow</option>
       <option value="white">white</option>
       <option value="orange">orange</option>
       <option value="lavender">lavender</option>
     </select>
     <p/>
     <input type="button" class="bt_style" value="Save Selection" name="bt_save">  
   </form>
  </body>
</html>

Open in new window

0
Comment
Question by:gs_kanata
  • 2
4 Comments
 
LVL 3

Accepted Solution

by:
GarthSnyder earned 200 total points
ID: 24104444
Your <a> tags are unclosed, so the browser sees them as extending all the way to the end of the document. So the entire <select> popup is included in the link for lavender_rose and therefore has an onclick event.

Just close the <a>'s with </a> and you should be fine.
0
 
LVL 42

Assisted Solution

by:David S.
David S. earned 200 total points
ID: 24104572
The HTML validator can be quite helpful: http://validator.w3.org/
0
 
LVL 75

Assisted Solution

by:Michel Plungjan
Michel Plungjan earned 100 total points
ID: 24105184
I also strongly advice to change


      function markLoadPage( page_url )
      {
            alert( 'markLoadPage() called!' );
            return false; // cancel the link
      }

and

 onclick="return markLoadPage( '...' )"
0
 
LVL 75

Expert Comment

by:Michel Plungjan
ID: 24108133
Why "B" ???
0

Featured Post

What is SQL Server and how does it work?

The purpose of this paper is to provide you background on SQL Server. It’s your self-study guide for learning fundamentals. It includes both the history of SQL and its technical basics. Concepts and definitions will form the solid foundation of your future DBA expertise.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Finding original email is quite difficult due to their duplicates. From this article, you will come to know why multiple duplicates of same emails appear and how to delete duplicate emails from Outlook securely and instantly while vital emails remai…
The article shows the basic steps of integrating an HTML theme template into an ASP.NET MVC project
In this tutorial viewers will learn how to position overlapping items using z-index in CSS. They will also learn the restrictions on the z-index property.  Create a new HTML document with an internal stylesheet.: Create a div in CSS and name it Red.…
In this tutorial viewers will learn how to style elements, such a divs, with a "drop shadow" effect using the CSS box-shadow property Start with a normal styled element, such as a div.: In the element's style, type the box shadow property: "box-shad…

823 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question